HD 10390
Location of HD 10390 on the map (circled)
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Triangulum
Right ascension 01h 42m 03.48964s[1]
Declination +35° 14′ 44.5389″[1]
Apparent magnitude (V) 5.64[2]
Characteristics
Evolutionary stage main sequence star[3]
Spectral type B9 IV-V[4] or B9 V[5]
U−B color index −0.20[2]
B−V color index −0.07[2]
Astrometry
Radial velocity (Rv)−1.9±2.0[6] km/s
Proper motion (μ) RA: +48.763 mas/yr[1]
Dec.: −25.418 mas/yr[1]
Parallax (π)11.1882 ± 0.164 mas[1]
Distance292 ± 4 ly
(89 ± 1 pc)
Absolute magnitude (MV)+1.00[7]
Details
Mass2.62[8] M☉
Radius2.14±0.11[9] R☉
Luminosity51.5+2.4
−2.3[3] L☉
Surface gravity (log g)4.23+0.08
−0.04[10] cgs
Temperature11,076±139[11] K
Metallicity [Fe/H]−0.20[12] dex
Rotational velocity (v sin i)45[13] km/s
Age50+81
−31[14] Myr
Other designations
51 H. Trianguli,[15] AG+34°163, BD+34°297, FK5 1047, GC 2064, HD 10390, HIP 7943, HR 490, SAO 54912, TIC 61524043[16]
Database references
SIMBADdata

HD 10390 (HR 490; 51 H. Trinaguli) is a solitary star[17] located in the northern constellation Triangulum. It is faintly visible to the naked eye as a bluish-white hued point of light with an apparent magnitude of 5.64.[2] The object is located relatively close at a distance of 292 light-years based on Gaia DR3 parallax measurements[1] and it is drifting closer with a heliocentric radial velocity of −1.9 km/s.[6] At its current distance, HD 10390's brightness is diminished by an interstellar extinction of only five-hundredths of a magnitude[18] and it has an absolute magnitude of +1.00.[7]

HD 10390 has a stellar classification of B9 IV-V,[4] indicating that it is a slightly evolved B-type star with a luminosity class intermediate between a subgiant and a main sequence star. Osawa (1959) gave a class of B9 V,[5] instead indicating that it is an ordinary B-type main-sequence star that is generating energy via hydrogen fusion at its core. It has 2.62 times the mass of the Sun[8] and 2.14 times the radius of the Sun.[9] It radiates 51.5 times the luminosity of the Sun[3] from its photosphere at an effective temperature of 11,076 K.[11] HD 10390 is metal defecient with an iron abundance of [Fe/H] = −0.2 or 63.1% of the Sun's[12] and it spins modestly with a projected rotational velocity of 45 km/s,[13] well below its breakup velocity of 355 km/s.[19] Despite the first classification, HD 10390 has only completed 16.8% of its main sequence lifetime[3] at the age of approximately 50 million years. [14]

References

  1. 1 2 3 4 5 6 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. 1 2 3 4 Ducati, J. R. (2002). "VizieR Online Data Catalog: Catalogue of Stellar Photometry in Johnson's 11-color system". VizieR Online Data Catalog. Bibcode:2002yCat.2237....0D.
  3. 1 2 3 4 Zorec, J.; Royer, F. (January 2012). "Rotational velocities of A-type stars IV: Evolution of rotational velocities". Astronomy & Astrophysics. 537: A120. arXiv:1201.2052. Bibcode:2012A&A...537A.120Z. doi:10.1051/0004-6361/201117691. eISSN 1432-0746. ISSN 0004-6361. S2CID 55586789.
  4. 1 2 Cowley, A. (November 1972). "Spectral classification of the bright B8 stars". The Astronomical Journal. 77: 750. Bibcode:1972AJ.....77..750C. doi:10.1086/111348. ISSN 0004-6256.
  5. 1 2 Osawa, Kiyoteru (July 1959). "Spectral Classification of 533 B8-A2 Stars and the Mean Absolute Magnitude of A0 V Stars". The Astrophysical Journal. American Astronomical Society. 130: 159. Bibcode:1959ApJ...130..159O. doi:10.1086/146706. ISSN 0004-637X. S2CID 120004061.
  6. 1 2 Wilson, Ralph Elmer (1953). "General catalogue of stellar radial velocities". Carnegie Institute Washington D.C. Publication: 0. Bibcode:1953GCRV..C......0W. S2CID 120000732.
  7. 1 2 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. 1 2 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.
  9. 1 2 Kervella, P.; Thévenin, F.; Di Folco, E.; Ségransan, D. (April 8, 2004). "The angular sizes of dwarf stars and subgiants: Surface brightness relations calibrated by interferometry". 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. S2CID 6077801.
  10. ↑ 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.
  11. 1 2 Paunzen, E.; Schnell, A.; Maitzen, H. M. (December 2005). "An empirical temperature calibration for the Δa photometric system I: The B-type stars". Astronomy & Astrophysics. 444 (3): 941–946. arXiv:astro-ph/0509049. Bibcode:2005A&A...444..941P. doi:10.1051/0004-6361:20053546. eISSN 1432-0746. ISSN 0004-6361.
  12. 1 2 Anders, F.; et al. (August 2019). "Photo-astrometric distances, extinctions, and astrophysical parameters for Gaia DR2 stars brighter than G = 18". Astronomy & Astrophysics. 628: A94. arXiv:1904.11302. Bibcode:2019A&A...628A..94A. doi:10.1051/0004-6361/201935765. eISSN 1432-0746. ISSN 0004-6361. S2CID 131780028.
  13. 1 2 Abt, Helmut A.; Levato, Hugo; Grosso, Monica (July 2002). "Rotational Velocities of B Stars". The Astrophysical Journal. 573 (1): 359–365. Bibcode:2002ApJ...573..359A. doi:10.1086/340590. ISSN 0004-637X.
  14. 1 2 Grosbol, P. J. (June 1978). "Space velocities and ages of nearby early-type stars". Astronomy and Astrophysics Supplement Series. 32: 409–421. Bibcode:1978A&AS...32..409G. ISSN 0365-0138.
  15. ↑ Verbunt, F.; van Gent, R. H. (June 2010). "The star catalogue of Hevelius: Machine-readable version and comparison with the modern Hipparcos Catalogue". Astronomy and Astrophysics. 516: A29. Bibcode:2010A&A...516A..29V. doi:10.1051/0004-6361/201014003. eISSN 1432-0746. ISSN 0004-6361. S2CID 54171435.
  16. ↑ "HD 10390". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved December 15, 2023.
  17. ↑ 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.
  18. ↑ 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.
  19. ↑ Huang, Wenjin; Gies, D. R.; McSwain, M. V. (22 September 2010). "A Stellar Rotation Census of B Stars: From ZAMS to TAMS". The Astrophysical Journal. 722 (1): 605–619. arXiv:1008.1761. Bibcode:2010ApJ...722..605H. doi:10.1088/0004-637X/722/1/605. eISSN 1538-4357. ISSN 0004-637X.
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