4 Vesta

4 Vesta iku objèk gedhé dhéwé kaloro ing sabuk asteroid, kanthi dhiamèter 530 kilomèter (watara 330 mil)^[1] lan diprakirakaké duwé massa 9% saka massa kabèh sabuk asteroid.^[10] 4 Vesta tinemu déning astronom Jerman Heinrich Wilhelm Olbers nalika tanggal 29 Maret 1807.^[1] Jeneng Vesta dijupuk saka jeneng dèwi kenya sajeroning mitologi Romawi, sing wujud dèwi pangreksa kanggo omah lan panggenian.

4 Vesta  

Kawah Rheasilvia sing nyakup sapérangan gedhé wilahan kidul Vesta. Gambar dijupuk kanthi montor mabur ruwang akasa Dawn
Panemon
Panemu	Heinrich Wilhelm Olbers
Tanggal ditemokaké	29 Maret 1807
Penamaan
Kategori planet minor	Sabuk utama (kulawarga Vesta)
Ciri-ciri orbit[1]
Epos 14 Mèi 2008 (Dina Julian 2454600.5)
Aphelion	384,72 Gm (2,572 SA)
Perihelion	321,82 Gm (2,151 SA)
Sumbu semi-mayor	353,268 Gm (2,361 SA)
Eksentrisitas	0,089 17
Periode orbit	3,63 a (1325,15 Dina)
Kecepatan orbit rata-rata	19,34 km/dtk
Anomali rata-rata	90,53°
Inklinasi	7,135° menyang Ekliptika 5,56° menyang babagan invariabel[2]
Bujur node menaik	103,91°
Argumen perihelion	149,83°
Ciri-ciri fisik
Dimensi	578×560×458 km[3] 529 km (rata-rata)
Massa	(2,67 ± 0,02)×1020 kg[4]
Kepadatan rata-rata	3,42 g/cm³[4]
Gravitasi permukaan di khatulistiwa	0,22 m/det²
Kecepatan lepas	0,35 km/det
Periode rotasi	0,222 6 dina (5.342 jam)[1][5]
Albedo	0,423 (géomètrik)[6]
Suhu	min: 85 K (−188 °C) maks: 255 K (−18 °C)[7]
Kelas spektrum	Asteroid tipe V[1][8]
Magnitudo tampak	5,1[9] tekan 8,48
Magnitudo mutlak (H)	3,20[1][6]
Ukuran sudut	0,64" tekan 0,20"

Vesta kèlangan watara 1% saka massané sajeroning siji tabrakan sing dumadi kurang saka samilyar taun kapungkur. Akèh serpihan-serpihan saka kedadèyan iki sing tiba menyang bumi minangka meteorit HED, siji sumber bukti sing akèh ngenani asteroid.^[11] Vesta iku asteroid sing ingkang padhang piyambak. Let paling adoh Vesta saka Srengéngé iku sithik luwih adoh tinimbang let minimum antarané Ceres lan Srengéngé,^[12] éwadéné orbit Vesta sepenuhé ana ing njero orbit Ceres.^[13]

Réferènsi

1. "JPL Small-Body Database Browser: 4 Vesta". Dibukak ing 2008-06-01.
2. "The MeanPlane (Invariable plane) of the Solar System passing through the barycenter". 2009-04-03. Diarsip saka asliné ing 2009-04-20. Dibukak ing 2009-04-10. (produced with Solex 10 Archived 2015-05-24 at the Wayback Machine. written by Aldo Vitagliano; see also Invariable plane)
3. Thomas, P. C.; et al. (1997). "Impact excavation on asteroid 4 Vesta: Hubble Space Telescope results". Science. 277: 1492. doi:10.1126/science.277.5331.1492. {{cite journal}}: Explicit use of et al. in: |author= (pitulung)
4. Baer, James; Chesley, Steven R. (2008). "Astrometric masses of 21 asteroids, and an integrated asteroid ephemeris" (PDF). Celestial Mechanics and Dynamical Astronomy. Springer Science+Business Media B.V. 2007. 100 (2008): 27–42. doi:10.1007/s10569-007-9103-8. Diarsip saka sing asli (PDF) ing 2011-02-24. Dibukak ing 2008-11-11.
5. Harris, A. W.; Warner, B. D.; Pravec, P.; (Eds.) (2006). "Asteroid Lightcurve Derived Data. EAR-A-5-DDR-DERIVED-LIGHTCURVE-V8.0". NASA Planetary Data System. Dibukak ing 2007-03-15.{{cite web}}: CS1 maint: multiple names: authors list (link)
6. Tedesco, E. F.; Noah, P. V.; Noah, M.; Price, S. D. (2004). "Infra-Red Astronomy Satellite (IRAS) Minor Planet Survey. IRAS-A-FPA-3-RDR-IMPS-V6.0". NASA Planetary Data System. Dibukak ing 2007-03-15.{{cite web}}: CS1 maint: multiple names: authors list (link)
7. Mueller, T. G.; Metcalfe, L. (2001). "ISO and Asteroids" (PDF). European Space Agency (ESA) bulletin. 108: 38.
8. Neese, C.; Ed. (2005). "Asteroid Taxonomy EAR-A-5-DDR-TAXONOMY-V5.0". NASA Planetary Data System. Dibukak ing 2007-03-15.
9. Menzel, Donald H.; and Pasachoff, Jay M. (1983). A Field Guide to the Stars and Planets (édhisi ka-2nd). Boston, MA: Houghton Mifflin. kc. 391. ISBN 0395348358.{{cite book}}: CS1 maint: multiple names: authors list (link)
10. Pitjeva, E. V. (2005). "High-Precision Ephemerides of Planets—EPM and Determination of Some Astronomical Constants" (PDF). Solar System Research. 39 (3): 176. doi:10.1007/s11208-005-0033-2. Diarsip saka sing asli (PDF) ing 2012-09-07. Dibukak ing 2012-09-22.
11. Kelley, M. S.; et al. (2003). "Quantified mineralogical evidence for a common origin of 1929 Kollaa with 4 Vesta and the HED meteorites". Icarus. 165: 215. doi:10.1016/S0019-1035(03)00149-0. {{cite journal}}: Explicit use of et al. in: |author2= (pitulung)
12. Nalika perihelion Ceres ing tanggal 10 Fèbruari 2009, Ceres bakal luwih cedhak menyang Srengéngé tinimbang Vesta, amarga Vesta duwé let aphelion sing luwih gedhé tinimbang let perihelion Ceres. (10-02-2009: Vesta 2,56 SA; Ceres 2,54 SA)
13. "Ceres, Pallas Vesta and Hygiea". Gravity Simulator. Dibukak ing 2008-05-31.

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