HD 24141

HD 24141, also known as HR 1192, is a star located in the northern constellation Camelopardalis, the giraffe. It is faintly visible to the naked eye as a white-hued point of light with an apparent magnitude of 5.79.^[2] The object is located relatively close at a distance of 176 light-years based on Gaia DR3 parallax measurements^[1] and it is slowly drifting closer with a heliocentric radial velocity of −0.2 km/s.^[6] At its current distance, HD 24141's brightness is diminished by 0.17 magnitudes due to interstellar extinction^[16] and it has an absolute magnitude of +2.28.^[7]

HD 24141

Location of HD 24141 on the map (circled)
Observation data Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation	Camelopardalis
Right ascension	03h 53m 43.28625s[1]
Declination	+57° 58′ 30.5263″[1]
Apparent magnitude (V)	5.79±0.01[2]
Characteristics
Spectral type	kA3hF0mF0[3] or A7 V[4]
U−B color index	+0.11[5]
B−V color index	+0.18[5]
Astrometry
Radial velocity (Rv)	−0.2±0.6[6] km/s
Proper motion (μ)	RA: +86.826 mas/yr[1] Dec.: −91.295 mas/yr[1]
Parallax (π)	18.5633 ± 0.0352 mas[1]
Distance	175.7 ± 0.3 ly (53.9 ± 0.1 pc)
Absolute magnitude (MV)	+2.28[7]
Position (relative to HD 24141A)
Component	HD 24141B
Epoch of observation	J2000.0
Angular distance	1.02″ [8]
Position angle	69° [9]
Projected separation	52.3 AU [8]
Details
A
Mass	1.92[10] M☉
Radius	1.72±0.09[11] R☉
Luminosity	10.66±0.04[1] L☉
Surface gravity (log g)	4.28+0.08 −0.07[12] cgs
Temperature	8,518±290[10] K
Metallicity [Fe/H]	−0.02[13] dex
Rotational velocity (v sin i)	53±10[14] km/s
Age	15[10] Myr
B
Mass	0.77[8] M☉
Other designations
AG+57°437, BD+57°752, FK5 1105, GC 4668, HD 24141, HIP 18217, HR 1192, SAO 24276, WDS J03537+5759AB[15]
Database references
SIMBAD	data

It is not entirely certain whether HD 24141 is an Am star or not.^[17] One stellar classification is kA3hF0mF0,^[3] which indicates that it is an Am star with the calcium K-lines of an A3 star and the hydrogen and metallic lines of a F0 star. However, Abt & Levy (1985) gave a class of A7 V,^[4] indicating that it is instead an ordinary A-type main-sequence star. HD 24141 has 1.92 times the mass of the Sun and it is estimated to be only 15 million years old.^[10] It radiates 10.66 times the luminosity of the Sun^[1] from its photosphere at an effective temperature of 8,518 K.^[10] These parameters correspond to a radius that is 72% larger than the Sun's.^[11] HD 24141 has a near-solar metallicity at [Fe/H] = −0.02^[13] and it spins modestly with a projected rotational velocity of 53 km/s.^[14]

Most sources generally agree that HD 24141 is a solitary star.^[18][4][19] A 2014 multiplicity survey found a 7th magnitude companion with a mass of 0.77 M_☉^[8] located 1.02" away from the star^[8] along a position angle of 69°. Another 15th magnitude companion designated as C is located 1216″ away along a position angle of 187°.^[20] The object appears to share the same proper motion as HD 24141,^[9] but the Gaia DR3 parallax is different and it is considered very unlikely that the two are physically associated.^[21]

References

1. Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.
2. Høg, E.; Fabricius, C.; Makarov, V. V.; Urban, S.; Corbin, T.; Wycoff, G.; Bastian, U.; Schwekendiek, P.; Wicenec, A. (March 2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics. 355: L27–L30. Bibcode:2000A&A...355L..27H. ISSN 0004-6361. S2CID 17128864.
3. Sato, K.; Kuji, S. (November 1990). "MK classification and photometry of stars used for time and latitude observations at Mizusawa and Washington". Astronomy and Astrophysics Supplement Series. 85: 1069. Bibcode:1990A&AS...85.1069S. ISSN 0365-0138. S2CID 115879513.
4. Abt, H. A.; Levy, S. G. (October 1985). "Improved study of metallic-line binaries". The Astrophysical Journal Supplement Series. 59. American Astronomical Society: 229. Bibcode:1985ApJS...59..229A. doi:10.1086/191070. ISSN 0067-0049. S2CID 120757291.
5. Mendoza, E. E.; Gomez, V. T.; Gonzalez, S. (June 1978). "UBVRI photometry of 225 AM stars". The Astronomical Journal. 83. American Astronomical Society: 606. Bibcode:1978AJ.....83..606M. doi:10.1086/112242. ISSN 0004-6256. S2CID 121449759.
6. Gontcharov, G. A. (November 2006). "Pulkovo Compilation of Radial Velocities for 35,495 Hipparcos stars in a common system". Astronomy Letters. 32 (11): 759–771. arXiv:1606.08053. Bibcode:2006AstL...32..759G. doi:10.1134/S1063773706110065. eISSN 1562-6873. ISSN 1063-7737. S2CID 119231169.
7. Anderson, E.; Francis, Ch. (May 2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331–346. arXiv:1108.4971. Bibcode:2012AstL...38..331A. doi:10.1134/S1063773712050015. eISSN 1562-6873. ISSN 1063-7737. S2CID 119257644.
8. De Rosa, R. J.; et al. (26 November 2013). "The VAST Survey – III. The multiplicity of A-type stars within 75 pc". Monthly Notices of the Royal Astronomical Society. 437 (2): 1216–1240. arXiv:1311.7141. Bibcode:2014MNRAS.437.1216D. doi:10.1093/mnras/stt1932. eISSN 1365-2966. ISSN 0035-8711. S2CID 88503488.
9. Mason, Brian D.; Wycoff, Gary L.; Hartkopf, William I.; Douglass, Geoffrey G.; Worley, Charles E. (December 2001). "The 2001 US Naval Observatory Double Star CD-ROM. I. The Washington Double Star Catalog". The Astronomical Journal. 122 (6): 3466–3471. Bibcode:2001AJ....122.3466M. doi:10.1086/323920. ISSN 0004-6256. S2CID 119533755.
10. David, Trevor J.; Hillenbrand, Lynne A. (12 May 2015). "The Ages of Early-type Stars: Strömgren Photometric Methods Calibrated, Validated, Tested, and Applied to Hosts and Prospective Hosts of Directly Imaged Exoplanets". The Astrophysical Journal. 804 (2): 146. arXiv:1501.03154. Bibcode:2015ApJ...804..146D. doi:10.1088/0004-637X/804/2/146. eISSN 1538-4357. S2CID 33401607.
11. Kervella, P.; Thévenin, F.; Di Folco, E.; Ségransan, D. (October 2004). "The angular sizes of dwarf stars and subgiants". Astronomy & Astrophysics. 426 (1): 297–307. arXiv:astro-ph/0404180. Bibcode:2004A&A...426..297K. doi:10.1051/0004-6361:20035930. eISSN 1432-0746. ISSN 0004-6361.
12. Stassun, Keivan G.; et al. (9 September 2019). "The Revised TESS Input Catalog and Candidate Target List". The Astronomical Journal. 158 (4): 138. arXiv:1905.10694. Bibcode:2019AJ....158..138S. doi:10.3847/1538-3881/ab3467. eISSN 1538-3881. hdl:1721.1/124721. S2CID 166227927.
13. Gontcharov, G. A. (December 2012). "Dependence of kinematics on the age of stars in the solar neighborhood". Astronomy Letters. 38 (12): 771–782. arXiv:1606.08814. Bibcode:2012AstL...38..771G. doi:10.1134/S1063773712120031. eISSN 1562-6873. ISSN 1063-7737. S2CID 118345778.
14. Abt, Helmut A.; Morrell, Nidia I. (July 1995). "The Relation between Rotational Velocities and Spectral Peculiarities among A-Type Stars". The Astrophysical Journal Supplement Series. 99: 135. Bibcode:1995ApJS...99..135A. doi:10.1086/192182. ISSN 0067-0049. S2CID 120495962.
15. "HD 24141". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved June 8, 2023.
16. Gontcharov, George A.; Mosenkov, Aleksandr V. (28 September 2017). "Verifying reddening and extinction for Gaia DR1 TGAS main sequence stars". Monthly Notices of the Royal Astronomical Society. 472 (4): 3805–3820. arXiv:1709.01160. Bibcode:2017MNRAS.472.3805G. doi:10.1093/mnras/stx2219. eISSN 1365-2966. ISSN 0035-8711. S2CID 118879856.
17. Renson, P.; Manfroid, J. (19 March 2009). "Catalogue of Ap, HgMn and Am stars". Astronomy & Astrophysics. 498 (3): 961–966. Bibcode:2009A&A...498..961R. doi:10.1051/0004-6361/200810788. eISSN 1432-0746. ISSN 0004-6361. S2CID 55849045.
18. Abt, Helmut A. (1961). "The Frequency of Binaries among Metalmc-Line Stars". The Astrophysical Journal Supplement Series. 6. American Astronomical Society: 37. Bibcode:1961ApJS....6...37A. doi:10.1086/190060. ISSN 0067-0049. S2CID 121399948.
19. Eggleton, P. P.; Tokovinin, A. A. (11 September 2008). "A catalogue of multiplicity among bright stellar systems". Monthly Notices of the Royal Astronomical Society. 389 (2): 869–879. arXiv:0806.2878. Bibcode:2008MNRAS.389..869E. doi:10.1111/j.1365-2966.2008.13596.x. eISSN 1365-2966. ISSN 0035-8711. S2CID 14878976.
20. Tokovinin, Andrei; Lépine, Sébastien (2012). "Wide Companions to Hipparcos Stars within 67 pc of the Sun". The Astronomical Journal. 144 (4): 102. arXiv:1208.0626. Bibcode:2012AJ....144..102T. doi:10.1088/0004-6256/144/4/102. S2CID 8741733.
21. Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.