28 Leonis Minoris

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28 Leonis Minoris
Observation data
Epoch J2000.0        Equinox J2000.0 (ICRS)
Constellation Leo Minor
Right ascension 10h 24m 08.60391s [1]
Declination +33° 43′ 06.7069″ [1]
Apparent magnitude  (V)5.50±0.01 [2]
Characteristics
Spectral type K1 III [3]
B−V color index +1.18 [4]
Astrometry
Radial velocity (Rv)−24.3±0.2 [5] km/s
Proper motion (μ)RA: −14.460 mas/yr
Dec.: −2.770 mas/yr
Parallax (π)6.7945±0.091  mas [1]
Distance 480 ± 6  ly
(147 ± 2  pc)
Absolute magnitude  (MV)−0.05 [6]
Details
Mass 1.19 [7]   M☉
Radius 22.6 [1]   R☉
Luminosity 207 [1]   L☉
Surface gravity (log g)1.80 [7]   cgs
Temperature 4,580±122 [8]   K
Metallicity [Fe/H]−0.04 [1]   dex
Age 202 [1]   Myr
Other designations
28 LMi, AG+33°1015, BD+34°2123, GC 14280, HD 90040, HIP 50935, HR 4081, SAO 62019 [9]
Database references
SIMBAD data

28 Leonis Minoris (28 LMi) is a solitary, [10] orange hued star located in the northern constellation Leo Minor, the lesser lion. It has an apparent magnitude of 5.5, [2] allowing it to be faintly visible to the naked eye. Based on parallax measurements from the Gaia satellite, it is estimated to be 480 light years distant. [1] 28 LMi is approaching the Solar System with a heliocentric radial velocity of −24  km/s . [5] At its current distance, the star brightness is diminished by 0.14 magnitudes due to interstellar dust. [11]

This is a population II [12] giant star with a stellar classification of K1 III. [3] It has a comparable mass to the Sun [7] but has expanded to 22.6 times its girth. [1] It radiates 207 times the luminosity of the Sun [1] from its photosphere at an effective temperature of 4,580  K . [8] It has an iron abundance 90% of the Sun's, making it slightly metal deficient. [1]

References

  1. 1 2 3 4 5 6 7 8 9 10 11 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 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.
  3. 1 2 Adams, Walter S.; Joy, Alfred H.; Humason, Milton L.; Brayton, Ada Margaret (April 1935). "The Spectroscopic Absolute Magnitudes and Parallaxes of 4179 Stars". The Astrophysical Journal. 81: 187. Bibcode:1935ApJ....81..187A. doi: 10.1086/143628 . eISSN   1538-4357. ISSN   0004-637X.
  4. ↑ Haggkvist, L.; Oja, T. (1970). "Results of BV photometry 1969-70 (Uppsala refractor)". Private Communication. Bibcode:1970Priv.........0H.
  5. 1 2 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.
  6. ↑ 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.
  7. 1 2 3 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.
  8. 1 2 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.
  9. ↑ "28 LMi". SIMBAD . Centre de données astronomiques de Strasbourg . Retrieved November 18, 2022.
  10. ↑ 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.
  11. ↑ 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.
  12. ↑ Bartkevicius, A.; Lazauskaite, R. (1 January 1997). "Classification of Population II Stars in the Vilnius Photometric System. II. Results". Open Astronomy. 6 (4): 499. Bibcode:1997BaltA...6..499B. doi: 10.1515/astro-1997-0402 . eISSN   2543-6376.
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