  | |
| Observation data Epoch J2000.0 Equinox J2000.0 ( ICRS) | |
|---|---|
| Constellation | Leo Minor |
| Right ascension | 10h 11m 12.77777s [1] |
| Declination | +37° 24′ 06.8383″ [1] |
| Apparent magnitude (V) | 5.84 [2] (5.79 - 5.88) [3] |
| Characteristics | |
| Spectral type | K3 III [4] |
| B−V color index | +1.29 [5] |
| Variable type | suspected [6] |
| Astrometry | |
| Radial velocity (Rv) | 7.38±0.22 [7] km/s |
| Proper motion (μ) |
RA: −20.679
mas/
yr
[1] Dec.: −29.496 mas/ yr [1] |
| Parallax (π) | 5.7353 ± 0.0663 mas [1] |
| Distance | 569 ± 7
ly (174 ± 2 pc) |
| Absolute magnitude (MV) | −0.59 [8] |
| Details | |
| Mass | 1.17 [9] M☉ |
| Radius | 24.9±1.3 [10] R☉ |
| Luminosity | 228±5 [1] L☉ |
| Surface gravity (log g) | 1.76+0.10 −0.06 [11] cgs |
| Temperature | 4,487±122 [12] K |
| Metallicity [Fe/H] | +0.05 [9] dex |
| Other designations | |
| Database references | |
| SIMBAD | data |
HD 88231, also known as HR 3993, is a solitary orange-hued star located in the northern constellation Leo Minor. It has an apparent magnitude of 5.84, [2] making it faintly visible to the naked eye under ideal conditions. Gaia DR3 parallax measurements imply a distance of about 569 light-years, [1] and the object is currently receding with a heliocentric radial velocity of 7.38 km/s. [7] At its current distance, HD 88231's brightness is diminished by 0.17 magnitudes due to interstellar extinction [14] and it has an absolute magnitude of −0.59. [8]
The object has a stellar classification of K3 III, [4] indicating that it is an evolved red giant star. It has a comparable mass to the Sun [9] but it has expanded to 24.9 times the radius of the Sun. [10] It radiates 228 times the luminosity of the Sun [1] from its enlarged photosphere at an effective temperature of 4,487 K. [12] HD 88231 is slightly metal enriched with an iron abundance 112% that of the Sun ([Fe/H] = +0.05). [9]
HD 88231 was suspected to be variable in the K-band based on Two-Micron Sky Survey observations in 1969. [15] A 1994 paper found that it ranges from 5.79 to 5.88 in the visual band. [3] As of 2004 however, the variability has not been confirmed. [16]
References
- ^ a b c d e f g 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.
- ^ a b 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.
- ^ a b Percy, John R.; Wong, Nancy; Bohme, Dietmar; Curott, David R.; Dempsey, Frank; Fortier, George L.; Ganis, Matt; Parello, Stephanie; Landis, Howard J.; Luedeke, Kenneth D.; Pray, Donald; Smith, Michael S.; Snyder, Leroy F.; Thompson, Raymond R.; Wasson, Rick; Williams, Harold O.; Walker, William S. G.; Wood, James E. (June 1994). "Photometric surveys of suspected small-amplitude red variables III: an AAVSO photometric photometry survey". Publications of the Astronomical Society of the Pacific. 106. IOP Publishing: 611. Bibcode: 1994PASP..106..611P. doi: 10.1086/133420. ISSN 0004-6280. S2CID 122593597.
- ^ a b Wilson, Ralph E.; Joy, Alfred H. (March 1950). "Radial Velocities of 2111 Stars". The Astrophysical Journal. 111: 221. Bibcode: 1950ApJ...111..221W. doi: 10.1086/145261. eISSN 1538-4357. ISSN 0004-637X. S2CID 122883647.
- ^ Haggkvist, L.; Oja, T. (1970). "Results of BV photometry 1969-70 (Uppsala refractor)". Private Communication. Bibcode: 1970Priv.........0H. S2CID 231475662.
- ^ Samus’, N. N.; Kazarovets, E. V.; Durlevich, O. V.; Kireeva, N. N.; Pastukhova, E. N. (January 2017). "General catalogue of variable stars: Version GCVS 5.1". Astronomy Reports. 61 (1): 80–88. Bibcode: 2017ARep...61...80S. doi: 10.1134/S1063772917010085. eISSN 1562-6881. ISSN 1063-7729. S2CID 125853869.
- ^ a b Famaey, B.; Jorissen, A.; Luri, X.; Mayor, M.; Udry, S.; Dejonghe, H.; Turon, C. (January 2005). "Local kinematics of K and M giants from CORAVEL/Hipparcos/Tycho-2 data. Revisiting the concept of superclusters". Astronomy and Astrophysics. 430: 165. arXiv: astro-ph/0409579. Bibcode: 2005A&A...430..165F. doi: 10.1051/0004-6361:20041272. S2CID 17804304.
- ^ a b 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.
- ^ a b c d 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.
- ^ a b 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.
- ^ Takagi, Yuhei; Itoh, Yoichi; Oasa, Yumiko (April 25, 2010). "Age-Determination Method of Pre-Main Sequence Stars with High-Resolution I-Band Spectroscopy". Publications of the Astronomical Society of Japan. 62 (2). Oxford University Press (OUP): 501–508. arXiv: 1004.1971. Bibcode: 2010PASJ...62..501T. doi: 10.1093/pasj/62.2.501. ISSN 0004-6264. S2CID 118626904.
- ^ a b 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.
- ^ "HD 88231". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved June 29, 2023.
- ^ 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.
- ^ Neugebauer, G.; Leighton, Robert B. (August 1969). "Two-micron sky survey; a preliminary catalog". NASA Special Publication. 3047. Bibcode: 1969NASSP3047.....N. S2CID 117746703.
- ^ Samus, N. N.; Durlevich, O. V. (November 2004). "VizieR Online Data Catalog: Combined General Catalogue of Variable Stars (Samus+ 2004)". VizieR Online Data Catalog: II/250. Bibcode: 2004yCat.2250....0S.
