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An astronomical catalogue is a list or tabulation of astronomical objects, typically grouped together because they share a common type, morphology, origin, means of detection, or method of discovery. Astronomical catalogs are usually the result of an astronomical survey of some kind.
- 0ES — Einstein Slew Survey, version 0[1]
- 1A, 2A, 3A — Lists of X-ray sources from the Ariel V satellite[2]
- 1C — First Cambridge Catalogue of Radio Sources
- 1ES — Einstein Slew Survey[1][3]
- 1FGL, 2FGL[4] — Lists of gamma-ray sources from the Large Area Telescope on board the Fermi Gamma-ray Space Telescope
- 1RXH — ROSAT HRI Pointed Observations
- 1RXS — ROSAT All-Sky Bright Source Catalogue, ROSAT All-Sky Survey Faint Source Catalog
- 1SWASP — SuperWASP
- 2A — see 1A
- 2C — Second Cambridge Catalogue of Radio Sources
- 2E — The Einstein Observatory Soft X-ray Source List
- 2MASS — Two Micron All Sky Survey
- 2MASP — Two Micron All Sky Survey, Prototype
- 2MASSI — Two Micron All Sky Survey, Incremental release
- 2MASSW — Two Micron All Sky Survey, Working database
- 2MUCD — Ultracool Dwarfs from the 2MASS Catalog
- 2MASX — Two Micron All Sky Survey, Extended source catalogue
- 2MASS-GC (Globular Clusters, I.R.) (2MASS-GC 01 and 2MASS-GC 02 are Hurt 1 and Hurt 2) (source: Bruno Alessi)
- 3A — see 1A
- 3C (and 3CR) — Third Cambridge Catalogue of Radio Sources (and revised)
- 4C — Fourth Cambridge Survey of celestial radio sources
- 5C — Fifth Cambridge Survey of Radio Sources
- 6C — Sixth Cambridge Survey of radio sources
- 7C — Seventh Cambridge Survey
- 8C — Eighth Cambridge Survey
- 8pc — 8 parsec listing, all stars within 8 parsec
- 9C — Ninth Cambridge survey at 15GHz
- AB — Azzopardi / Breysacher (Wolf-Rayet stars in the Small Magellanic Cloud, SMC)
- Abel (globular star clusters)
- Abell — Abell catalogue
- Abetti — Giorgio Abetti (double stars)
- Abt — (for example: open star cluster Abt 1 = Biurakan 4 = Markarian 6 = Stock 7) (at 2:29.6 / +60°39' near the southwestern section of the Heart Nebula in Cassiopeia)
- AC — Astrographic Catalogue
- A.C. — Alvan Clark (double stars)
- Ac / Ack — Agnès Acker (planetary nebulae)
- A.G.C. — Alvan Graham Clark (double stars)
- AGC — Arecibo General Catalog
- ADS — Aitken Double Star Catalogue
- AFGL — Air Force Geophysical Laboratory
- Ag — Aguero (catalogue of peculiar galaxies, captured during the National Geographic Society — Palomar Observatory Sky Survey) (POSS)
- AG, AGK, AGKR — Astronomische Gesellschaft Katalog
- AH03 — (star clusters) (source: Bruno Alessi's list)
- Al — Allen (planetary nebulae)
- Alden — H.L. Alden (double stars)
- Alessi — Bruno Sampaio Alessi's catalogue of telescopic asterisms and open star clusters
- Alessi / Teutsch — Bruno S. Alessi's and Philipp Teutsch's catalogue of telescopic asterisms and open star clusters
- Ali — H. Ali (double stars)
- Alicante (for example: open star cluster Alicante 1 at 3:59:18 / +57°14'14", in Camelopardalis). Alicante 1 looks like a chain of dim stars with two relatively bright accompanying stars known as TYC 3725-498-1 and TYC 3725-866-1 (source: Wikisky)
- Aller — R.M. Aller (double stars) (Ramón María Aller Ulloa?)
- ALS — UBV beta database for Case-Hamburg Northern and Southern Luminous Stars[5]
- Alter (open star clusters) (for example: Alter 1 at 0:31:56.9 / +63°09'47" in Cassiopeia) (Alter 1 = King 14 = Alter Cluster)
- Alves / Yun (open star clusters)
- AM — Arp-Madore catalogue of open and globular star clusters (Halton Arp / Barry F. Madore) (for example: Arp-Madore 1 in Horologium, Arp-Madore 2 in Puppis)
- An — Anderson (double stars)
- Andrews / Lindsay (AL) (open star clusters) (for example: Andrews-Lindsay 1 at 13:15:16 / -65°55'12" in Musca) (AL 1 is also known as vdB-Hagen 144)
- Annis (?)
- APM — Automatic Plate Measuring machine
- Apriamashvili (open star clusters) (the open star cluster Basel 1 at about one degree WNW of Messier 11 is also known as the Apriamashvili cluster)
- Ara — (for example: Ara 2035 at 7:08.8/-24°03' in Canis Major) [6] (S.Aravamudan?)
- Arak / Ark — Marat Arsen Arakelian, 1929–1983 (Arakelian Emission Line Objects)[7]
- Arce / Goodman (open star clusters)
- Archinal — probably Brent A. Archinal (for example: open star cluster Archinal 1 at 18:54:49 / +5°32'54" in Serpens Cauda)
- Arg — Friedrich Wilhelm Argelander (double stars)
- ARO — Algonquin Radio Observatory
- Arp — Atlas of Peculiar Galaxies
- ASCC — N.V. Kharchenko, All-Sky Compiled Catalogue, Kinematika Fiz. Nebesn. Tel., 17, part no 5, 409 (2001)
- Auner — (for example: open star cluster Auner 1 at 7:04:16 / -19°45'00" in Canis Major) (Auner 1 is the cluster which was "lost" in the disturbing ghost reflection of nearby Alpha Canis Majoris, aka Sirius, this during the Palomar Observatory Sky Survey, POSS)
- Av — Antalova (open star clusters) (for example: Antalova 1 at 17:28:55 / -31°34'11' in Scorpius)
- Av-Hunter — Aveni / Hunter (open star clusters) (for example: Aveni-Hunter 1 at 23:37:48 / +48°31'12", north of the former constellation Honores Friderici in Andromeda)
- AXP — Anomalous X-Ray Pulsar
- AZ / AzV — Azzopardi-Vigneau
- β — S. W. Burnham (double stars)
- βpm — Burnham's measures of proper motion stars, 1913 catalogue.
- B — Willem H. van den Bos (double stars)
- B — E. E. Barnard's List of Dark Nebulae
- B2 — Bologna Sky Survey at 408 MHz (9929 radio sources) performed with the Northern Cross Radio Telescope
- B3 — The New Bologna Sky Survey at 408 MHz (13354 radio sources) performed with the Northern Cross Radio Telescope
- Ba — Barnard (double stars)
- Ba — Baade (planetary nebulae)
- BAC — Bordeaux Astrographic Catalog
- Bail / Bal — R. Baillaud (double stars)
- Baize / Baz — Paul Baize (Paul Achille-Ariel Baize, 1901–1995) (double stars)
- Balbinot (open and globular star clusters) (for example: globular star cluster Balbinot 1 in Pegasus)
- Bar — Barkhatova (open star clusters) (for example: Barkhatova 1, NNW of NGC 7000; the North America Nebula in Cygnus)
- BAR — E.E. Barton (double stars)
- Bas — Basel (open star clusters) (for example: Basel 1 at about one degree WNW of open star cluster Messier 11 in Scutum) (Basel 1 is also known as the Apriamashvili cluster)
- Bat — Hans Battermann, 1860–1922 (double stars)
- BAT99 — The Fourth Catalogue of Population I Wolf Rayet stars in the Large Magellanic Cloud
- BAY — Uranometria (Bayer designation)
- BCVS — Bibliographic Catalogue of Variable Stars
- BD — Bonner Durchmusterung
- BDS — Burnham Double Star Catalogue
- BDS03 (I.R.) — (open star clusters)
- BDSB — (for example: open star cluster BDSB 96 at 7:05:18 / -12°19'44")
- BDSB03 (I.R.) — (open star clusters)
- Be — Bergvall (catalogue of some 400 interacting and distorted galaxies found on glass copies of the ESO Blue Survey) [8]
- Be — Berkeley (open star clusters) (104 items)
- Be — Bernes (dark nebulae)
- Bedin — Luigi Bedin (for example: dwarf spheroidal galaxy Bedin I in Pavo)
- Ben — Jack Bennett's catalogue of 152 deep-sky objects in the southern celestial hemisphere, all from the NGC or IC lists, except Ben 47 which is Melotte 105 in Carina, and Ben 72a which is Trumpler 23 in Norma
- Bergeron — Joe Bergeron (for example: Bergeron 1 in Cepheus) [9]
- BFS — Blitz-Fitch-Stark (for example: BFS 15 in Cepheus) [10]
- BH — Van den Bergh / Hagen (open star clusters), see also VdB-Ha
- Bhas/Bha — T.P. Bhaskavan (double stars)
- Bi — Biurakan (open star clusters)
- Bica — (open star clusters)
- Bica / Schmitt (open star clusters)
- Big — Guillaume Bigourdan (double stars)
- Bird — F. Bird (double stars)
- Bl — Victor Manuel Blanco (for example: open star cluster Blanco 1 in Sculptor)
- Bloch/Blo — M. Bloch (double stars)
- Bo — Bochum (open star clusters)
- Bo — Bond (double stars)
- BoBn — Boeshaar-Bond (planetary nebulae) (for example: BoBn 1, an extragalactic planetary nebula at 0:37 / -13°42' in Cetus)
- Bode — (telescopic asterisms)
- Boe — Boeger (double stars)
- Bogleiv (open star clusters)
- Bonatto (open star clusters)
- Boo — Samuel Latimer Boothroyd, 1874–1965 (double stars)
- Boy — Bowyer (double stars)
- BPI — (open star clusters)
- BPM / L — Bruce Proper Motion Survey (Luyten)
- BPMA — Bordeaux Catalogue (double stars)
- Bradley
- Brandt — (for example: open star cluster Brandt 1 at 8:09:32 / -47°20'12") ( = Pozzo 1) (very near Gamma Velorum, also known as 'Regor')
- Brand / Wouterloot (BW) (open star clusters)
- Brey — Breysacher, Large Magellanic Cloud Wolf Rayet stars
- BRI — Bj, R, I survey
- Briceno (open star clusters) (for example: Briceno 1 at the star 25 Orionis)
- Brosch — (open star clusters)
- Brso/Bso — Brisbane Observatory, Australia (double stars)
- Brt — S.G. Barton (double stars)
- Btz — E. Bernewitz (double stars)
- Bry — Walter William Bryant (double stars)
- BV — Bohm-Vitense (planetary nebulae)
- BVD — R. Benavides (double stars)
- C — Caldwell catalogue (Sir Patrick Moore)
- Caballero-Solano — (for example: open star cluster Caballero-Solano 1 at Delta Orionis, also known as the Mintaka cluster)
- Calvet — (telescopic asterisms)
- Camargo — (open star clusters)
- Canali — (telescopic asterisms)
- Capo/Cpo — Cape Observatory, South Africa (double stars)
- CARMA
- Carpenter — (for example: Carpenter 1 at galactic coordinates 213.34 / -12.60) (= BDB 229, = FSR 1086, = MWSC 732)
- Carraro — (for example: open star cluster Carraro 1 at 10:37:00 / -58°44'00") (NW of the Eta Carinae Nebula)
- CBB — (open star clusters)
- CCCP-Cl — (open star clusters)
- CCCP-Gp — (open star clusters)
- CCCS — Catalogue of Cool Carbon Stars
- CCDM — Catalog of Components of Double and Multiple Stars
- CCO — Catalogue of Cometary Orbits
- CCS — General Catalogue of Cool Carbon Stars
- CCS2 — General Catalog of S Stars, second edition
- CD / CoD — Cordoba Durchmusterung
- CDIMP — Catalogue of Discoveries and Identifications of Minor Planets
- CED — Cederblad (gaseous nebula)
- CEL — Celescope Catalogue of Ultraviolet Magnitudes[11]
- Cezar — (for example: Cezar 6 at galactic coordinates 204.93 / -13.83)
- CFBDSIR — Canada-France Brown Dwarfs Survey-InfraRed
- CG — Cometary Globule (for example: CG 4 in Puppis, also known as 'God's Hand')
- CGCG — Catalogue of Galaxies and Clusters of Galaxies
- CGCS — Catalogue of Galactic Cool Carbon Stars
- CGO — Catalogue of Galactic O Stars[12]
- CGSS — Catalogue of Galactic S Stars
- Chaple — (for example: Chaple 1 at galactic coordinates 74.46 / +3.66, which is an asterism called Chaple's Arc, and also Cygnus Fairy Ring, and HD 190466 Group, and Ramakers 20)
- Chatard — (telescopic asterisms)
- Che — P. S. Chevalier (double stars)
- Chereul — (moving groups of stars)
- Chiravalle — (for example: Chiravalle 1 in Hercules, at galactic coordinates 75.25 / +27.91, which is an asterism called Candle and Holder).
- Chupina — (Chupina objects 1 to 5 are located at and near open star cluster Messier 67 in Cancer)
- CIO — Catalog of Infrared Observations
- CLUST — (open star clusters)
- CMC — Carlsberg Meridian Catalogue
- Cn — Cannon (planetary nebulae) (Cn1 / Cn2 / Cn3)
- Cog — Cogshall (double stars)
- Col — Collins (double stars)
- Com — G. C. Comstock (double stars)
- Cop — Copeland (double stars)
- Coro/Coo — Cordoba Observatory, Argentina (double stars)
- CoRoT — CoRoT Catalogue
- CoRoT-Exo — CoRoT Catalogue
- Cou — Paul Couteau (double stars)
- CP — Cambridge Pulsar
- CPC — Cape Photographic Catalogue[13]
- CPD — Cape Photographic Durchmusterung
- Cr — Collinder (open star clusters) (Per Collinder)
- Crinklaw — (telescopic asterisms)
- CRL — Cambridge Research Laboratory Sky-Survey
- Cruls/Cru — L. Cruls (double stars)
- CSI — Catalog of Stellar Identifications[14][15]
- CSV — Catalog of Suspected Variables
- CSS — General Catalogue of S Stars
- Cz — Czernik (open star clusters)
- D — James Dunlop (A catalogue of nebulae and clusters of stars in the southern hemisphere, observed at Parramatta in New South Wales)
- DA — Dominion Observatory List A[16]
- Danjon — Andre Danjon (double stars)
- Danks — (open star clusters) (for example: Danks 1 & 2, located near the northeastern Centaurus section of the Coalsack Nebula)
- Dawes — W.R. Dawes (double stars)
- δ — B.H. Dawson (double stars)
- DBSB03, I.R. — (open star clusters)
- DB2000 (Dutra-Bica 2000, I.R.) (open star clusters)
- DB2001 (Dutra-Bica 2001, I.R.) (open star clusters)
- DC — (open star clusters)
- DCld — A catalogue of southern dark clouds[17]
- DDO — David Dunlap Observatory (Dwarf Galaxies)
- DeHt — Dengel-Hartl (planetary nebulae) (for example: DeHt 1 at 5:55 / -22°54' in Lepus)
- Dem — Ercole Dembowski (double stars)
- DENIS — Deep Near Infrared Survey of the Southern Sky
- DENIS-P — Deep Near Infrared Survey, Provisory designation
- Desvoivres — (telescopic asterisms)
- DHW — Dengel-Hartl-Weinberger (planetary nebulae)
- Dias — Wilton S. Dias, UNIFEI (open star clusters)
- Dick — J. Dick (double stars)
- Djorg — Stanislav George Djorgovski (globular star clusters) (for example: Djorgovski 1 in Scorpius)
- Dju — P. Djurkovic (double stars)
- DM — Durchmusterung
- BD — Bonner Durchmusterung
- CD / CoD — Cordoba Durchmusterung
- CPD — Cape Photographic Durchmusterung
- DN — Duus-Newell (Catalogue of Southern Groups and Clusters of Galaxies) (Alan Duus / Barry Newell)
- DnB — Open Source (nebulae)
- DO — Dearborn Observatory
- Do — Dolidze (open star clusters) (57 items)
- Dob — A.W. Doberck (double stars)
- Dom — Jean Dommanget (double stars)
- Don — H.F. Donner (double stars)
- Donatiello — Giuseppe Donatiello (for example: dwarf spheroidal galaxy Donatiello I in Andromeda)
- Doo — Eric Doolittle (double stars)
- DoDz — Dolidze-Dzimselejsvili (open star clusters) (11 items)
- Dorpat — Dorpat Observatory, Estonia
- DR — Downes and Rinehart microwave sources
- Du — Duner (double stars)
- Δ — James Dunlop (double stars)
- Dutra-Bica (open star clusters)
- DWB — Dickel, Wendker, Bieritz (A catalogue of optically visible HII regions in the Cygnus X region)
- Dwingeloo — Dwingeloo Obscured Galaxy Survey (DOGS) (for example: Dwingeloo 1 and Dwingeloo 2 in Cassiopeia)
- E — (for example: globular star cluster E 3 at 9:20:59 / -77°16'57", in Chamaeleon) (source: Bruno Alessi's and Wilton Dias's lists)
- EC — Edinburgh-Cape Blue Object Survey
- Edg — D.W. Edgecomb (double stars)
- [EG97] — Eckart + Genzel, 1997 (Stars close to Sagittarius A*, like [EG97]S2.)
- Egb — Egbert (double stars)
- EGB — Ellis-Grayson-Bond (planetary nebulae)
- Eggen — Olin J. Eggen (double stars)
- EGGR — Eggen-Greenstein proper motion star
- Elosser — (telescopic asterisms)
- EMP — Ephemerides of Minor Planets
- Eng — Engelmann (double stars)
- EPIC — Ecliptic Plane Input Catalog
- Escorial — (open star clusters)
- ESO — European Southern Observatory Catalog, ESO/Uppsala catalog
- Esp — T. E. H. Espin (double stars)
- Es/Birm — Espin/Birmingham (catalogue of red stars)
- F — Fath — Edward Arthur Fath, 1880–1959 (for example: galaxy Fath 703, aka NGC 5892, in Libra)
- Fa — Fairall (Anthony Patrick Fairall, 1943–2008)
- FCC — Fornax Cluster Catalogue
- Fei — Feinstein (open star clusters) (for example: Feinstein 1 at 11:05:56 / -59°49'00" in Carina)
- Feibelman (for example: open star cluster Feibelman 1 near 'The Revenante of the Swan' 34-P Cygni)
- Feigelson (for example: open star cluster Feigelson 1 at 11:59:51 / -78°12'27", in Chamaeleon, at the binary star Epsilon Chamaeleonis)
- Ferrero (telescopic asterisms)
- Φ — W.S. Finsen (double stars)
- Fg — Fleming (planetary nebulae), for example: Fleming 1
- FK4 — Fourth Fundamental Catalogue
- FK5 — Fifth Fundamental Catalogue
- Fle — J.O. Fleckenstein (double stars)
- FLM — Historia coelestis Britannica (Flamsteed designation)
- For — L. Forgeron (double stars)
- Fox — Philip Fox (double stars)
- French — Sue French (from Sky and Telescope)
- Fr — Frolov (open star clusters) (for example: Frolov 1 at 23:57:25 / +61°37'48" in Cassiopeia)
- Franz — J. Franz (double stars)
- Frh — R. Furuhjelm (double stars)
- Frk — W.S. Franks (double stars and colours of stars) (probably William Sadler Franks, published a catalogue of the colours of 3890 stars)
- FSC — Faint Source Catalogue
- FSR — Froebrich-Scholz-Raftery, I.R. (open and globular star clusters) (for example: globular star cluster FSR 1758 in Scorpius)
- Fur — H.Furner (double stars)
- G — Lowell Proper Motion Survey (Giclas)
- GD — Lowell Proper Motion Survey (Giclas dwarf)
- GR* — Lowell Proper Motion Survey (Giclas red star)
- HG — Lowell Proper Motion Survey (Giclas Hyades)
- Gale — W.F. Gale (double stars)
- Gallo — J. Gallo (double stars)
- GAn — G. Anderson (double stars)
- Gaia catalogues (general purpose)
- Gaia DR1
- Gaia DR2
- Gaia EDR3
- Gaia DR3
- GC — General Catalogue of Nebulae and Clusters
- GC (Boss) — Boss general catalogue of 33342 stars
- GCRV — General Catalogue of Stellar Radial Velocities[18]
- GCTP — General Catalogue of Trigonometric Parallaxes
- GCVS — General Catalog of Variable Stars
- Giclas — Henry L. Giclas (double stars)
- Gl / GJ — Gliese–Jahreiß catalogue or Gliese–Jahreiß catalogue
- GJJC — Gillett-Jacoby-Joyce-Cohen (planetary nebulae)
- Gli — J.M. Gilliss (double stars)
- GLIMPSE — (together with Mercer in the list of 10978 star clusters)
- Glp — S. de Glasenapp (double stars)
- GM — Gyulbudaghian-Maghakian (planetary nebulae)
- Gol — H. Goldschmidt (double stars)
- GOS — Galactic O Star Catalogue[19]
- GOSSS — Galactic O-Star Spectroscopic Survey[19]
- Goyal — A.N. Goyal (double stars)
- Graham (for example: open star cluster Graham 1 at 10:56:32 / -63:01:04 in Carina)
- Gr — Grant (double stars)
- Grasdalen (open star clusters)
- GR — Gibson Reaves (for example: Gibson Reaves 8 (GR 8) (galaxy) in Virgo) (Gibson Reaves, 1923–2005)
- GRB — Gamma Ray Burst
- Grindlay (globular star clusters) (for example: Grindlay 1 in Scorpius, at 17:32.0 / -33°50') [20]
- GRO — Gamma Ray Observatory (NASA — Compton)
- Groombridge (Stephen Groombridge, 1755–1832)
- GSC — Guide Star Catalog
- GSC2 / GSC II — Guide Star Catalog II
- GSPC — Guide Star Photometric Catalog
- GSPC2 — Guide Star Photometric Catalog, 2nd
- Gsh — J. Glaisher (double stars)
- GΣ — G. Struve (double stars)
- Gtb — K. Gottlieb (double stars)
- Gui — J. Guillaume (double stars)
- Gum — Gum catalog of emission nebulae
- h — John Herschel (double stars)
- H — Haro (planetary nebulae)
- H — Harvard (open star clusters)
- H — William Herschel (double stars)
- HA — ? (for example: galaxy HA 85 in Telescopium, see chart 26 in Wil Tirion's Sky-Atlas 2000.0) (however, chart 435 in Uranometria 2000.0, Volume 2, 1987 edition, shows this object as ESO 183-G30)
- Haf — Haffner (open star clusters)
- Hall — Asaph Hall (double stars)
- HAT-P — HATNet Project, Hungarian Automated Telescope Network (search for extrasolar planets)
- HATS - HATNet Project, southern hemisphere.
- HaTr — Hartl-Tritton (planetary nebulae)
- Haufen — (for example: Haufen A in Cetus, at 1h 08.9m / -15° 25' (2000.0), which is, according to Sky Catalogue 2000.0, Volume 2, the same as Abell 151)
- Hav/Moffat — Havlen-Moffat (open star clusters)
- Hb — Hubble (planetary nebulae)
- HC — Howell-Crisp (planetary nebulae)
- HCG — Hickson Compact Group
- HCWils — H.C. Wilson (double stars)
- HD — Henry Draper Catalogue
- HDE — Henry Draper Extension
- HDEC — Henry Draper Extension Charts
- HdO — Harvard Observatory USA, and stations elsewhere (double stars)
- HDW — Hartl-Dengel-Weinberger (planetary nebulae)
- Hdz — Harvard Zone Catalogues (double stars)
- HE — Hamburg/ESO Survey
- He — Henize (planetary nebulae)
- Hen — Henize Catalogues of Hα-Emission Stars and Nebulae in the Magellanic Clouds
- Hf — Hoffleit (planetary nebulae)
- HFG — Heckathorn-Fesen-Gull
- HH — Herbig-Haro object
- HIC — Hipparcos Input Catalogue
- HIP — Hipparcos Catalogue
- HIPASS — HI Parkes All-Sky Survey
- Hld — E.S. Holden (double stars)
- Hlm — E. Holmes (double stars)
- Hln — Frank Holden (double stars)
- HN — William Herschel's 1821 catalogue (double stars)
- Ho — Hogg (open star clusters)
- Ho — G.W.Hough (double stars)
- Holmberg — Erik Holmberg (dwarf irregular galaxies)
- Hooke — Robert Hooke (double stars)
- Howe — H.A. Howe (double stars)
- HP — Haute Provence (globular star clusters) (for example: HP 1 in Ophiuchus, at 17:31.1 / -29°59') [20]
- HR — Bright Star Catalogue (Harvard Revised Catalogue)
- Hrg — L. Hargrave (double stars)
- Hrr — Harrington (telescopic asterisms)
- HΣ — Hermann Struve (double stars)
- HS — Hamburg Survey (quasars and blue stars)
- HSC — Hubble Source Catalog[21] (lists of sources from the Hubble Space Telescope)
- Hst — C.S. Hastings (double stars)
- Hu — Humason (planetary nebulae)
- Hu — W.J. Hussey (double stars)
- Hurt — Robert Hurt (for example: globular star cluster Hurt 2, aka 2MASS-GC02 in Sagittarius)
- Huygens — Christiaan Huygens (double stars)
- HV — Harvard Variable
- HVGC — Hyper Velocity Globular Cluster (for example: HVGC-1 in the supergiant elliptical galaxy Messier 87 in Virgo)
- HVS — HyperVelocity Stars
- Hynek — J. Allen Hynek (double stars)
- Hz — Wulff D. Heintz (double stars)
- Hzg — E. Hertzsprung (double stars)
- I — Robert Thorburn Ayton Innes (R.T.A. Innes, 1861–1933) (double stars)
- IC — Index Catalogue
- IC I — Index Catalogue I
- IC II — Index Catalogue II
- IDS — Index Catalogue of Visual Double Stars
- IGR — Integral Gamma-Ray source
- IPHAS — The INT Photometric Hα Survey of the Northern Galactic Plane
- IRAS — Infrared Astronomical Satellite
- IRS — International Reference Star
- Isk — Iskudarian (open star clusters) (for example: Iskudarian 1 in the northern section of the rhombus β, γ, δ, and ζ Lyrae)
- Isserstedt (telescopic asterisms)
- IsWe — Ishida-Weinberger (planetary nebulae)
- Ivanov (open star clusters)
- J — Robert Jonckheere's catalogue of double star observations (see for an article about it)
- Ja — Jacoby (planetary nebulae) (for example: Jacoby 1 at 15:23 / +52°14' in Boötes)
- JaFu — Jacoby-Fullton (planetary nebulae)
- JAn — John A. Anderson (double stars)
- Jc — William Stephen Jacob (double stars)
- Jef — H.M. Jeffers (double stars)
- Jn — Jones (planetary nebulae) (for example: Jones 1 at 23:36 / +30°28' in Pegasus)
- JnEr — Jones-Emberson (planetary nebulae) (for example: Jones-Emberson 1 in Lynx, also known as the Headphone nebula)
- Jo — Jones (double stars)
- Johansson — (open star clusters) (for example: Johansson 1 at 15:46:20 / -52:22:54 in Norma)
- Joy — Alfred Harrison Joy (double stars)
- Jsp — Morris Ketchum Jessup (double stars)
- Juchert — (open star clusters)
- Juchert-Saloranta (telescopic asterisms)
- JW — Jones' & Walker's list of stars near the Orion Nebula.
- K — Lubos Kohoutek (planetary nebulae)
- Ka — Valentina Karachentseva (dwarf galaxies)
- Karhula — (for example: open star cluster Karhula 1 near planetary nebula Messier 76 in Perseus)
- K2 — K2 (Kepler extended mission) catalog
- KELT — Kilodegree Extremely Little Telescope (search for extrasolar planets)
- Kemble — Father Lucian Kemble (asterisms which could be observed through binoculars, for example: Kemble 1, aka Kemble's Cascade in Camelopardalis)
- Kepler — Kepler catalog
- Kes — Kesteven (supernova remnants). For example: Kesteven 79
- K / Kg — Ivan R. King (open star clusters)
- KGZ — Catalogue de Zimmerman
- Kharchenko (for example: open star cluster Kharchenko 1 at 6:08:48 / +24:19:54 near or at Messier 35 in Gemini)
- KIC — Kepler Input Catalog
- Kim — Dongwon Kim (for example: globular star cluster Kim 2 in Indus)
- KjPn — Kazaryan-Parsamyan (planetary nebulae)
- Klemola (for example: Klemola 44 galaxy cluster in Sculptor) (? — Arnold Richard Klemola, 1931–2019)
- KnFs — Kinman-Feast-Lasker (planetary nebulae)
- Knott / Kn — G. Knott (double stars)
- KOI — Kepler Object of Interest
- Kontizas (for example: Kontizas 953 in Dorado) (in the Large Magellanic Cloud)
- Koposov (open and globular star clusters) (for example: globular star clusters Koposov 1 and Koposov 2 in Virgo and Gemini)
- Kr — A.Kruger (double stars) (probably Karl Nikolaus Adalbert Krueger, 1832–1896)
- Kron — (globular star clusters) (for example: Kron 3 in Tucana)
- Kronberger — (for example: open star cluster Kronberger 1 at 5:28:20 / +34°46'52", aka Alicante 12, in Auriga)
- Kru — E.C. Kruger (double stars)
- Ku — F. Kustner (double stars)
- KUG — Kiso Survey for Ultraviolet-excess Galaxies[22]
- Kui — Gerard P. Kuiper, 1905–73 (double stars)
- KUV — Kiso observatory, UV-excess object
- L / BPM — Bruce Proper Motion Survey (Luyten)
- La — Langley (double stars)
- Lac — N. de Lacaille, 1713–62 (double stars)
- Lac — Catalog of Nebulae of the Southern Sky (Lacaille)
- Lac I — Nebulae
- Lac II — Nebulous Star Clusters
- Lac III — Nebulous Stars
- Laevens — Benjamin P. M. Laevens (globular clusters and dwarf galaxies), for example: Laevens 1 in Crater, Laevens 2 in Triangulum (Triangulum II), Laevens 3 in Delphinus.
- Lal — F. de Lalande (double stars)
- Lam — J. von Lamont (double stars)
- λ (Lambda) — (mentioned in T.W.Webb's Celestial Objects for Common Telescopes, Volume 2: The Stars, pages 285–319: Index of Double Stars, Epoch 2000)
- Printed examples from the 'Lambda' catalogue: λ 32 (RA 3:47.9), λ 88 (RA 7:48.9), λ 91 (RA 7:55.7), λ 96 (RA 8:12.5), λ 108 (RA 9:0.3), λ 115 (RA 9:37.1), λ 140 (RA 11:56.7), λ 176 (RA 13:20.5), λ 228 (RA 15:23.2), λ 249 (RA 15:47.6), λ 316 (RA 17:0.4), λ ? (RA 17:6.4), λ 320 (RA 17:12.2), λ 342 (RA 17:53.3). All examples are located in the southern celestial hemisphere. The 'Lambda' catalogue is related to T.J.J.See's catalogue of double stars.
- LAMOST — Large Sky Area Multi-Object Fibre Spectroscopic Telescope (Guo Shoujing Telescope)
- Latham — (for example: Latham 1 at 13:10:50 / +30°28'36" in Coma Berenices)
- Latysev — (open star clusters)
- Lau — H.E. Lau (double stars)
- LBN — Lynds' Catalogue of Bright Nebulae
- Lbz — P. Labitzke (double stars)
- LDN — Lynds' Catalogue of Dark Nebulae
- LDS — Luyten Double Star catalogue
- LEDA — Lyon-Meudon Extragalactic Database
- Lederman — (telescopic asterisms)
- Le Gentil — (for example: Le Gentil 3 in Cygnus, at 21:08 / +51°40') (dark nebula)
- Leon — Frederick C. Leonard (double stars)
- Lewis — Thomas Lewis (double stars)
- LFT — Luyten Five-Tenths catalogue
- LG11 — Lépine & Gaidos 2011, bright M dwarfs[23]
- LGG — Lyons Groups of Galaxies
- LGGS – Local Group Galaxy Survey[24]
- LGS — (for example: dwarf galaxy LGS 3 in Pisces, also known as the Pisces Dwarf)
- LHA — Lamont-Hussey Alpha
- LHS — Luyten Half-Second catalogue
- Liller (globular star clusters) (for example: Liller 1 in Scorpius)
- Lo — Lars Olof Loden (open star clusters)
- Lo — Longmore
- Loiano — (for example: open star cluster Loiano 1 at 19:58:21 / +32°32'42" in Cygnus)
- Lorenzin — Tomm Lorenzin (telescopic asterisms)
- LoTr — Longmore-Tritton (planetary nebulae)
- LP — Luyten-Palomar Survey
- LPM — Luyten Proper-Motion Catalogue
- LPO — La Plata Observatory, Argentina
- LS — either of two "Luminous Stars" catalogues; see LSN and LSS, below
- LS — Lensed Star (LS 1 = 'Icarus' in Leo) (see MACS J1149 Lensed Star 1)
- LSA — Lundstrom-Stenholm-Acker (planetary nebulae)
- LSN — Luminous Stars in the Northern Milky Way
- LSPM — LSPM catalog — Lépine-Shara Proper Motion catalog[25]
- LSR — Lepine-Shara-Rich catalogue
- LSS — Luminous Stars in the Southern Milky Way
- LTT — Luyten Two-Tenths catalogue
- Luginbuhl-Skiff — (for example: open star cluster Luginbuhl-Skiff 1 at 6:14:48 / +12°52'24", slightly east of open star cluster NGC 2194 in Orion)
- Luhman — (for example: Luhman 16 in Vela)
- Luy — W.J. Luyten (double stars)
- Lv — Francis Preserved Leavenworth (double stars)
- Ly — Lynga (open star clusters)
- M — Catalog of Nebulae and Star Clusters (Messier object)
- M — Minkowski (planetary nebulae)
- Ma — J.H. Madler (double stars)
- Mac — Maclear (double stars)
- MACS — Massive Cluster Survey or Magellanic Catalogue of Stars
- MACHO — MACHO Project lensing events (Massive Compact Halo Object)
- MACHO-LMC — MACHO Project Large Magellanic Cloud Microlensing
- MACHO-SML — MACHO Project Small Magellanic Cloud Microlensing
- Maffei — Paolo Maffei (for example: galaxies Maffei 1 and Maffei 2 in Cassiopeia)
- Mailyan — (for example: Mailyan 44, aka Holmberg I / DDO 63 / UGC 5139, at 9h 40.5m / +71° 11' in Ursa Major)
- Malin — David Malin (for example: the largest galaxy known; Malin 1 in Coma Berenices)
- Mamajek (open star clusters) (for example: Mamajek 1 at 8:42:06 / -79°01'38" in Chamaeleon, also known as η Chamaeleontis cluster or η Chamaeleontis association)
- Markov (telescopic asterisms) (for example: Markov 1 in Hercules)
- MAXI — Monitor of All-sky X-ray Image
- Mayall — Nicholas Mayall (for example: globular star cluster Mayall II orbiting Messier 31, the Andromeda galaxy)
- Mayer (open star clusters)
- McC — McCormick Observatory Catalog
- MCG — Morphological Catalogue of Galaxies
- MCW — Morgan, Code, and Whitford[26]
- Me — Merrill (planetary nebulae)
- Mel — Melotte Catalogue of open star clusters (Philibert Jacques Melotte)
- Mercer (for example: globular star cluster Mercer 3 in Scutum)
- MGC (globular star clusters) (for example: MGC1 in Pisces)
- Mh — O.M. Mitchel (double stars)
- Mil — J.A. Miller (double stars)
- Miller (open star clusters) (for example: Miller 1 at 9:25:42 / -53°14'00", near the variable star GL Velorum, in Vela)
- Milb — W. Milburn (double stars)
- MlbO — Melbourne Observatory, Australia (double stars)
- Mlf — Frank Muller (double stars)
- Mlr — Paul Muller (double stars)
- Moffat (open star clusters) (for example: Moffat 1 at 16:01:30 / -54°07'00" in Norma)
- Moitinho (open star clusters) (for example: Moitinho 1 at 8:19:17 / -45°12'30", southwest of the Gum Nebula, in Vela)
- MPC — Minor Planet Circulars contain astrometric observations, orbits and ephemerides of both minor planets and comets
- Mrk — Benjamin "Benik" Egishevitch Markarian (open star clusters and galaxies; the Markarian galaxies)
- MSH — Mills, Slee, Hill — Catalog of Radio Sources
- Muzzio (open star clusters) (for example: Muzzio 1 at 8:57:12 / -47°46'00" in Vela)
- MW — Mandel-Wilson Catalogue of Unexplored Nebulae, not in SIMBAD yet
- MWC – (1933) Class O, B and A stars with bright hydrogen lines[27]
- MWP — Motch-Werner-Pakull (planetary nebulae)
- MyCn — Mayall-Cannon (planetary nebulae)
- Mz — Menzel (planetary nebulae)
- N — (for example: N 164 nebula in Dorado)
- Na — Nassau (planetary nebulae)
- Naillon — (telescopic asterisms) (source: Bruno Alessi's list)
- N30 — Catalog of 5,268 Standard Stars Based on the Normal System N30[28]
- Neckerman (telescopic asterisms) (for example: Neckerman 1, aka Kemble 2 "Little Cassiopeia").
- NED — NASA/IPAC Extragalactic Database
- Negueruela — (Ignacio Negueruela)
- NeVe — Neckel-Vehrenberg (planetary nebulae)
- New — ? (galaxies)
- New 1 in Cetus (source: The Deep-Sky Field Guide to Uranometria 2000.0, Cragin-Lucyk-Rappaport, chart 262).
- New 5 in Sagittarius (thus mentioned on chart 22 of Wil Tirion's Sky-Atlas 2000.0, mentioned as ESO 285-G7 on charts 411 and 412 in Uranometria 2000.0 Volume 2, 1987 edition).
- New 6 in Indus (chart 23 in Tirion's Sky-Atlas 2000.0, chart 413 in the 1987 edition of Uranometria 2000.0, Volume 2) (as ESO 287-G13)
- NGC — New General Catalogue
- NGTS — Next-Generation Transit Survey (extrasolar planets)
- NHICAT — Northern HIPASS Catalog
- NLTT — New Luyten Two-Tenths Catalogue
- NOMAD — The Naval Observatory Merged Astrometric Dataset (NOMAD)
- NStars — Nearby Stars Database
- NSV — New Catalogue of Suspected Variable Stars
- NZO — New Zealand Observatory (double stars)
- O — O'Neal (open star clusters)
- OCL — Open Clusters
- OEC — Open Exoplanet Catalogue
- OGLE — Optical Gravitational Lensing Experiment
- Ol — Charles Pollard Olivier (double stars)
- Opik — Ernst J. Opik (double stars)
- OSC — Open Supernova Catalog
- OΣ — Otto Struve, Pulkovo Catalogue, 1843 (double stars)
- OΣΣ — Otto Struve, Pulkovo Catalogue Supplement, 1843 (double stars)
- OSS — Ohio Sky Survey
- OTC — Open TDE Catalog
- OTS — Oasa-Tamura-Sugitani
- Ou — Nicolas Outters (for example: Ou 4, the 'Squid Nebula' in Cepheus) (see APOD — Astronomy Picture Of the Day — July 18, 2014).
- P — Perrine (double stars)
- PAL — Palomar Globular Clusters (15 globular clusters discovered on the Palomar Observatory Sky Survey plates)
- Par — Parkhurst (double stars)
- PB — Peimbert-Batiz (planetary nebulae)
- PC — Peimbert-Costero (planetary nebulae)
- PACWB — Catalogue of Particle-Accelerating Colliding-Wind Binaries
- Pe — Perek (planetary nebulae)
- Perr — Perrotin (double stars)
- Perry — Perry (double stars)
- PG — Palomar-Green (catalogue of ultraviolet excess stellar objects)
- PGC — Principal Galaxies Catalogue
- PH — Planet Hunters
- PHL — Palomar-Haro-Luyten catalogue[29]
- Pi — Pismis (Paris Pişmiş, 1911–1999) (catalogue of 22 open star clusters and 2 globular star clusters)
- PK — Catalogue of galactic planetary nebulae (Perek-Kohoutek)
- PKS — Parkes Catalogue of Radio Sources
- Platais — Imants Platais' catalogue of open star clusters
- Plq — Paloque (double stars)
- PLX — General Catalogue of Trigonometric Stellar Parallaxes and Supplement (Jenkins, Yale University)
- PM — Preite Martinez (planetary nebulae)
- PMC — Tokyo Photoelectric Meridian Circle Catalog[30]
- PN — See PNG[31]
- PNG — Strasbourg-ESO Catalogue of Galactic Planetary Nebulae[32]
- Pol — Pollock (double stars)
- Pou — Pourteau (double stars)
- PPM — Positions and Proper Motions Star Catalogues
- Pri — Pritchett (double stars)
- PrO — Perth Observatory, Australia (double stars)
- Prz — Przbyllok (double stars)
- Ps — Francis G. Pease (planetary nebulae) (for example: Pease 1 in the globular cluster Messier 15, Pegasus)
- PSR — Pulsating Source of Radio (pulsars)
- PTFO — Palomar Transient Factory
- Ptt — Pettit (double stars)
- Pu — Purgathofer (planetary nebulae)
- PuWe — Purgathofer-Weinberger (planetary nebulae)
- Pz — Piazzi (double stars)
- Q (?) — (for example: galaxy Q 6188 at 0:48.6 / -12:44 in Cetus) (mentioned on charts 261 / 262 in Uranometria 2000.0 Volume 2, 1987 edition) (according to Wolfgang Steinicke and Richard Jakiel of the book Galaxies and How to Observe Them, this galaxy (Q 6188) is also catalogued as Mrk 960 and PGC 2845)
- QES — QATAR Exoplanet Survey
- QSO — Revised and Updated Catalog of Quasi-stellar Objects
- QZM — (for example: QZM 2 at galactic coordinates 78.12 / +3.63) (J2000 — 20:14:26 / +41°13'28") (QZM 2 = Froebrich 116, = SUH 151)
- R — Radcliffe Observatory (RMC — Radcliffe Observatory Magellanic Clouds Catalogue)
- R — Rose (Rose Catalogue of Southern Clusters of Galaxies)
- R — H.C. Russell (double stars)
- Raab (open star clusters)
- RAFGL — Revised Air Force Geophysical Laboratory (four color infrared sky survey)
- Raymond — (telescopic asterisms)
- RBC — Revised Bologna Catalogue (for example: globular cluster RBC EXT8 in Messier 31; the Andromeda Galaxy)
- RBS — Rosat Bright Survey (bright X-ray sources)
- RC — Reference Catalogue
- RC2 — Reference Catalogue, 2nd edition
- RC3 — Reference Catalogue, 3rd edition
- RCW — Rodgers-Campbell-Whiteoak, a catalogue of Hα-emission regions in the southern Milky Way
- RECONS — Research Consortium on Nearby Stars
- Reiland — (for example: open star cluster Reiland 1 at 23:04:45 / +60°04'40")
- Reinmuth — (galaxies) (for example: Reinmuth 80 in Virgo) (NGC 4517A)
- Renou (telescopic asterisms)
- Reyle-Robin — (open star clusters, I.R.)
- Richaud — Jean Richaud, 1633–93 (double stars)
- Riddle — (open star clusters / telescopic asterisms)
- Rmk — C.L.C. Rumker (double stars)
- RMM — (for example: open star cluster RMM 1 at 12:12:20 / -63°15'31")
- RNGC — Revised New General Catalogue
- Ro — Curt Roslund (open star clusters)
- Roberts — (protoplanetary nebulae)
- Roe — Edward Drake Roe, 1859–1929 (double stars)
- Roman-Lopes — (open star clusters, I.R.)
- Ross — Ross Catalogue of New Proper Motion Stars (Frank Elmore Ross)
- ROT — Catalogue of Rotational Velocities of the Stars[33]
- RSA — Revised Shapley-Ames Catalogue
- RSGC — Red Super Giant Cluster (for example: RSGC 3 at 18:45:20 / -3°24'43")
- RST — Catalogue of southern double stars (Richard Alfred Rossiter, 1886–1977)
- Ru — Jaroslav Ruprecht (open star clusters)
- RX — ROSAT observations
- S — James South (double stars)
- Sa — Sanduleak (planetary nebulae)
- SA — Sandqvist (dark nebulae) (for example: Sandqvist 169 near Alpha Centauri[34])
- SACS — Second Astrolabe Catalogue of Santiago[35]
- Saloranta — Jaakko Saloranta (telescopic asterisms)
- SAO — Smithsonian Astrophysical Observatory Star Catalog
- Saurer — (for example: the open star cluster Saurer 1 at 7:18:18 / +1°53'12" in Canis Minor)
- SaWe — Sanduleak-Weinberger (planetary nebulae)
- SAX — Satellite per Astronomia a raggi X (BeppoSAX satellite)
- SC — Slough catalogue ("Observations of Nebulae and Clusters of Stars, made at Slough, with a Twenty-Feet Reflector, between the years 1825 and 1833" by John Herschel; 2306 entries)
- Schb — John Martin Schaeberle (double stars)
- Schj — Hans Schjellerup (double stars)
- Schoenberg — (for example: Schoenberg 205-6 at 6:37.1 / +10°21')
- Schuster — (for example: open star cluster Schuster 1 at 10:04:39 / -55°51'29" in Vela)
- SCM — Schwarz, Corradi, Melnick catalogue.[36][37]
- Scott — J.L. Scott (double stars)
- SCR — SuperCOSMOS-RECONS
- SDSS — Sloan Digital Sky Survey
- SDSSp — Sloan Digital Sky Survey, provisory
- 1SDSS — Sloan Digital Sky Survey, 1st release
- 2SDSS — reserved by the Sloan Digital Sky Survey for future release. The name is reserved to the IAU, but does not exist yet.
- 3SDSS — reserved by the Sloan Digital Sky Survey for future release. The name is reserved to the IAU, but does not exist yet.
- Se — Father Angelo Secchi (double stars)
- Se — Sersic (selected list of peculiar galaxies and groups of galaxies)
- See — T.J.J. See (Thomas Jefferson Jackson See, 1866–1962) (double stars) (related to the 'Lambda' catalogue which is mentioned in T.W.Webb's Celestial Objects for Common Telescopes, Volume 2: The Stars, pages 285–319: Index of Double Stars, Epoch 2000).
- SEGUE — Sloan Extension for Galactic Understanding and Exploration (for example: galaxies Segue 1 in Leo, Segue 2 in Aries, and Segue 3 in Pegasus)
- Sei — J. Scheiner (double stars)
- SGR — Soft Gamma Repeater
- Sh — Sharpless catalog (Sh 1 (1953) & Sh 2 (1959))
- Sh — Sher (open star clusters) (for example: Sher 1 at 11:01:04 / -60°14'00" in Carina)
- S, h — James South / John Herschel (joint 1824 catalogue of double stars)
- Shk — Romela Karapet Shakhbazian (compact groups of galaxies) (for example: Shakhbazian 1 (the 'Russian Cluster') at 10:54.8 / +40°28' in Ursa Major)
- Shorlin — (for example: open star cluster Shorlin 1 at 11:05:46 / -61°13'48" in Carina)
- Simeis — (for example: supernova remnant Simeis 147 / Sh2-240 in Taurus, also known as the 'Spaghetti Nebula')
- SIMP — Sondage Infrarouge de Mouvement Propre
- Sinnott — (multiple star systems)
- SIPS — Southern Infrared Proper Motion Survey
- Sk — Skinner (double stars)
- SL — Sandqvist-Lindroos (dark nebulae)
- Slr — R.P. Sellors (double stars)
- Smart — W.M. Smart (double stars)
- Smyth — W.H. Smyth (1788–1865) (double stars)
- Sn — Shane (planetary nebulae)
- Sp — Giovanni Schiaparelli (double stars)
- Sp — Shapley (planetary nebulae)
- Spano — (telescopic asterisms)
- SPF2 — Second Cat of Fundamental Stars
- SPF3 — Third Santiago-Pulkovo Fundamental Star Catalogue
- SPOCS — Spectroscopic Properties of Cool Stars
- SRS — Southern Reference Star Catalog
- SS — Sadler and Sharp (survey of E-type and S0-type galaxies)
- SS — Sanduleak-Stephenson (for example: SS 433 in Aquila)
- SSSPM — SuperCOSMOS Sky Survey
- SSTc2d — Spitzer Space Telescope c2d Legacy Source
- SSTDUSTG — DUSTiNGS (Dust in Nearby Galaxies with Spitzer)
- St — Carl L. Stearns (double stars)
- Ste — Stephenson (open star clusters)
- Stein — Johan Stein (double stars)
- Steine — (open star clusters)
- STF (Σ) — Friedrich Georg Wilhelm von Struve, aka 'Struve the Father' (double stars)
- ΣI — W. Struve, First Supplement (double stars)
- ΣII — W. Struve, Second Supplement (double stars)
- St / Stock — Jürgen Stock (open star clusters) (Stock 1 and 2 in,[38] Stock 3 to 23 in,[39] Stock 24 in [40])
- Stone — Ormond Stone (double stars)
- Streicher — (telescopic asterisms)
- Stromlo — (for example: Stromlo 2 in Monoceros and Canis Major, at IC 2177; the 'Eagle Nebula')
- StWr — Stock-Wroblewski (planetary nebulae)
- Sw — Swift (double stars)
- SWEEPS — Sagittarius Window Eclipsing Extrasolar Planet Search
- Swift (for example: Swift J1745-26 in Sagittarius) (stellar-mass black hole)
- SwSt — Swings-Struve (planetary nebulae)
- SyO — Sydney Observatory, Australia (double stars)
- Ta — Tarrant (double stars)
- TAC — Twin Astrograph Catalog
- Tc — Thackeray (planetary nebulae)
- TD1 — Catalogue of stellar UV fluxes (TD1 satellite)
- Terzan — Agop Terzan Catalogue of Globular Star Clusters (11 objects)
- THA — TH-alpha catalogue of emission line stars in the Eta Carinae nebula region
- TIC — TESS Input Catalog
- TIC — Tycho Input Catalog
- TOI — TESS Object of Interest
- Tom — Clyde Tombaugh (open star clusters)
- Ton — Tonantzintla Catalogue (globular star clusters)
- TPK — Teutsch-Patchick-Kronberger (asterisms) (for example: Teutsch-Patchick-Kronberger 1 at 23:39.3 / +47°30', north of the former constellation Honores Friderici in Andromeda)
- TRAPPIST — Transiting Planets and Planetesimals Small Telescope
- TrES — Trans-Atlantic Exoplanet Survey
- TVLM — Tinney's Very Low Mass Catalogue
- TYC — Tycho Catalogue
- TYC2 — Tycho-2 Catalogue
- Tr / Trumpler — Robert Julius Trumpler's open cluster list, published in Preliminary results on the distances, dimensions and space distribution of open star clusters
- Tu — Tucker (double stars)
- Turner — David G. Turner (?) (open star clusters) (for example: Turner 9 at and near the variable star SU Cygni, aka 'SU Cygni cluster')
- UBV — Photoelectric Catalogue, magnitude and color of stars in UBV (Blanco et al. 1968)
- UBV M — UBV Photoelectric Photometry Catalogue (Mermilliod 1987)
- UCAC — USNO CCD Astrograph Catalog (UCAC1, UCAC2, UCAC3 & UCAC4)
- UGC — Uppsala General Catalogue (galaxies)
- UGCA — Uppsala Selected non-UGC Galaxies
- UKS — United Kingdom Schmidt (globular star clusters)
- ULAS — UKIDDS Large Area Survey (quasars)
- Up — Upgren (open star clusters) (only one object in this catalogue? Upgren 1) (probably Arthur R. Upgren, 1933–2017)
- Up — Upton (double stars)
- USNO — US Naval Observatory
- USNO-A1.0— US Naval Observatory, A1.0 catalogue
- USNO-A2.0 — US Naval Observatory, A2.0 catalogue
- USNO-B1.0 — US Naval Observatory, B1.0 catalogue
- uvby98 — uvbyβ photoelectric photometric catalogue, by B. Hauck, M. Mermilliod, Astron. Astrophys., Suppl. Ser., 129, 431–433 (1998)
- vB — Van Biesbroeck's star catalog, variant, "VB"
- VBRC (?)
- VCC — Virgo Cluster Catalog
- Vd — Vandervort (planetary nebulae)
- VdB — Van den Bergh (catalogue of reflection nebulae)
- VdB-H — Van den Bergh-Herbst (open star clusters)
- VdB-Ha — Van den Bergh-Hagen (open star clusters)
- VFTS — VLT Flames Tarantula Survey
- Vou — J.G.E.G. Voute (double stars)
- VPHAS+ The VST Photometric Hα Survey of the Southern Galactic Plane and Bulge
- VV — Vorontsov-Vel'yaminov Interacting Galaxies (Boris Aleksandrovich Vorontsov-Vel'yaminov)¨
- VVV Survey — Vista Variables in the Via Lactea (Latin for Milky Way)
- VVV-CL — (open star clusters, I.R.)
- Vy — Vyssotsky (planetary nebulae) (Alexander Vyssotsky)
- W — Radiosource (Westerhout)
- W20 — Washington 20 Catalog
- Wa / Ward — I.W. Ward (double stars)
- Wa — Waterloo (open star clusters)
- WASP — Wide Angle Search for Planets
- WASP0-TR — Wide Angle Search for Planets, Transit
- WDS — Washington Double Star Catalog
- We — Weinberger (planetary nebulae) (Ronald Weinberger)
- We — Westerlund (open star clusters) (Bengt Westerlund, 1921–2008)
- Webb — T.W. Webb (double stars)
- WeDe — Weinberger-Dengle (planetary nebulae)
- Weisse — M. Weisse (double stars)
- WeSa — Weinberger-Sabbadin (planetary nebulae)
- Wg — R.W. Wrigley (double stars)
- Whiting — Alan B. Whiting (globular star clusters) (for example: Whiting 1 at 2h 02m / -3° 15' in Cetus)
- WhMe — Whitelock-Menzies
- Willman — Beth Willman (for example: ultra low-luminosity dwarf galaxy or star cluster Willman 1 in Ursa Major)
- Wils — R.H. Wilson, Jr. (double stars)
- Win — Winlock (double stars)
- Wirtz — Carl Wirtz (double stars)
- WISE — Wide-field Infrared Survey Explorer
- WISEA — AllWISE Source Catalog
- WISEP — Wide-field Infrared Survey Explorer Preliminary Release Source Catalog
- WNC / Winn — Winnecke Catalogue of Double Stars
- WNO — Washington Observations (double stars) (U.S. Naval Observatory, Washington D.C.)
- Wo — Woolley Nearby Star Catalogue
- Wolf — Catalogue of High Proper Motion Stars (Wolf)
- Worley — Charles E. Worley (double stars)
- WR — Catalog of Galactic Wolf-Rayet stars (Charles Wolf / Georges Rayet)
- XBS — XMM-Newton, Bright Source
- XBSS — XMM-Newton Bright Serendipitous Survey
- XEST — XMM-Newton Extended Survey of the Taurus Molecular
- XO — XO-Project (XO Telescope) (search for extrasolar planets)
- XTE — X-ray Timing Explorer
- XZ — XZ Catalogue of Zodiacal Stars (Richard Schmidt / Tom Van Flandern, 1977, U.S. Naval Observatory)
- Y — Young (double stars)
- YBS — Yale Bright Star Catalogue
- YZ — Yale Observatory Zone Catalog
- Z — Fritz Zwicky, Catalogue of galaxies and of clusters of galaxies
- ZC — Robertson's Zodiacal Catalogue (James Robertson's catalogue of 3539 zodiacal stars brighter than 9th magnitude)
- Zij — Islamic astronomical books that tabulates parameters used for astronomical calculations of the positions of the Sun, Moon, stars, and planets
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