HD 60803

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HD 60803
Observation data
Epoch J2000        Equinox J2000
Constellation Canis Minor [1]
Right ascension 07h 36m 34.70576s [2]
Declination 05° 51′ 43.8228″ [2]
Apparent magnitude  (V)5.904 [3]
Characteristics
Spectral type G0V + G1V [4]
U−B color index 1.351 [3]
Astrometry
Radial velocity (Rv)+4.60±0.06 [1] km/s
Proper motion (μ)RA: −109.760 [2] mas/yr
Dec.: +27.392 [2] mas/yr
Parallax (π)24.1025±0.0542  mas [2]
Distance 135.3 ± 0.3  ly
(41.49 ± 0.09  pc)
Absolute magnitude  (MV)2.93 [5]
Orbit [6]
Period (P)26.1889±0.0006 d
Semi-major axis (a)≥16.61±0.04  Gm [4]
Eccentricity (e)0.2187±0.0017
Periastron epoch (T)49644.88±0.03  MJD
Argument of periastron (ω)
(secondary)		113.6±0.5°
Semi-amplitude (K1)
(primary)		47.26±0.10 km/s
Semi-amplitude (K2)
(secondary)		48.16±0.12 km/s
Details
A
Mass 1.18±0.08 [7]   M☉
Radius 1.64±0.23 [7]   R☉
Luminosity 6.416±0.020 [2]   L☉
Surface gravity (log g)4.08±0.12 [7]   cgs
Temperature 6,055±70 [7]   K
Metallicity [Fe/H]−0.04±0.02 [3]   dex
Rotational velocity (v sin i)2.6±0.6 [4]  km/s
Age 5.5±0.5 [7]   Gyr
B
Mass 1.15±0.06 [7]   M☉
Radius 1.51±0.16 [7]   R☉
Surface gravity (log g)4.14±0.09 [7]   cgs
Temperature 6069±70 [7]   K
Rotational velocity (v sin i)0.9±1.0 [4]  km/s
Other designations
BD+06°1729, HD 60803, HIP 37031, HR 2918, SAO 115693 [8]
Database references
SIMBAD data

HD 60803 is a binary star system in the equatorial constellation of Canis Minor, located less than a degree to the northwest of the prominent star Procyon. [4] It has a yellow hue and is visible to the naked eye as a dim point of light with a combined apparent visual magnitude of 5.904. [3] The distance to this system is 135  light years as determined using parallax measurements, [2] and is drifting further away with a radial velocity of +4.6 km/s. [1]

The binary nature of this star system was first noted by O. C. Wilson and A. Skumanich in 1964. [4] It is a double-lined [9] spectroscopic binary with an orbital period of 26.2 days and an eccentricity of 0.22. [6] Both components are similar, G-type main-sequence stars; the primary has a stellar classification of G0V while the secondary has a class of G1V. [4] The masses are similar to each other, and are 28–31% greater than the mass of the Sun. [9] They have low rotation rates which may be quasi-synchronized with their orbital period. [4]

References

  1. 1 2 3 Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331. arXiv: 1108.4971 . Bibcode:2012AstL...38..331A. doi:10.1134/S1063773712050015. S2CID   119257644.
  2. 1 2 3 4 5 6 7 Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics . 616. A1. arXiv: 1804.09365 . Bibcode: 2018A&A...616A...1G . doi: 10.1051/0004-6361/201833051 . Gaia DR2 record for this source at VizieR.
  3. 1 2 3 4 Netopil, Martin (August 2017), "Metallicity calibrations for dwarf stars and giants in the Geneva photometric system", Monthly Notices of the Royal Astronomical Society, 469 (3): 3042–3055, arXiv: 1705.00883 , Bibcode:2017MNRAS.469.3042N, doi: 10.1093/mnras/stx1077 .
  4. 1 2 3 4 5 6 7 8 Griffin, R. F. (August 1997), "Spectroscopic binary orbits from photoelectric radial velocities. Paper 135: HR 2918", The Observatory, 117: 208–213, Bibcode:1997Obs...117..208G.
  5. ↑ Holmberg, J.; et al. (July 2009), "The Geneva-Copenhagen survey of the solar neighbourhood. III. Improved distances, ages, and kinematics", Astronomy and Astrophysics, 501 (3): 941–947, arXiv: 0811.3982 , Bibcode:2009A&A...501..941H, doi:10.1051/0004-6361/200811191, S2CID   118577511.
  6. 1 2 Kozłowski, S. K.; et al. (July 2016), "Spectroscopic Survey of Eclipsing Binaries with a Low-cost Echelle Spectrograph: Scientific Commissioning", Publications of the Astronomical Society of the Pacific, 128 (965) 074201, arXiv: 1602.01238 , Bibcode:2016PASP..128g4201K, doi:10.1088/1538-3873/128/965/074201, S2CID   118633671.
  7. 1 2 3 4 5 6 7 8 9 Ryabchikova, T.; Zvyagintsev, S.; Tkachenko, A.; Tsymbal, V.; Pakhomov, Yu; Semenko, E. (2022). "Fundamental parameters and abundance analysis of the components in the SB2 system HD 60803". Monthly Notices of the Royal Astronomical Society. 509: 202–211. arXiv: 2110.02637 . doi: 10.1093/mnras/stab2891 .
  8. ↑ "HD 60803". SIMBAD . Centre de données astronomiques de Strasbourg . Retrieved 2019-12-13.
  9. 1 2 Tokovinin, Andrei (2014), "From Binaries to Multiples. II. Hierarchical Multiplicity of F and G Dwarfs", The Astronomical Journal, 147 (4): 87, arXiv: 1401.6827 , Bibcode:2014AJ....147...87T, doi:10.1088/0004-6256/147/4/87, S2CID   56066740.
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