HD 88218

HD 88218 is a binary star in the southern constellation of Antlia. With an apparent magnitude of 6.16,[2] the system is faintly visible to the naked eye from dark skies. The pair orbit each other with a period of about 86 years.[5]

HD 88218
Observation data
Epoch J2000      Equinox J2000
Constellation Antlia
Right ascension  10h 09m 31.76814s[1]
Declination −35° 51′ 24.3767″[1]
Apparent magnitude (V) 6.16[2]
Characteristics
Spectral type G0V[3]
U−B color index +0.15[2]
B−V color index +0.60[2]
Astrometry
Radial velocity (Rv)36.5±0.3[4] km/s
Proper motion (μ) RA: −442.97±0.33[1] mas/yr
Dec.: +16.04±0.37[1] mas/yr
Parallax (π)31.61 ± 0.39[1] mas
Distance103 ± 1 ly
(31.6 ± 0.4 pc)
Absolute magnitude (MV)3.71[4]
Details
HD 88218 A
Mass1.29[5] M☉
Surface gravity (log g)4.13[3] cgs
Temperature5,944[3] K
Metallicity [Fe/H]0.08[3] dex
Age8.3[4] Gyr
HD 88218 B
Mass0.69[5] M☉
Other designations
CD-35° 6194, HD 88218, HIP 49769, HR 3992, SAO 201109.
Database references
SIMBADdata
Database references
SIMBADdata

References
  1. van Leeuwen, F. (2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics, 474 (2): 653–664, arXiv:0708.1752, Bibcode:2007A&A...474..653V, doi:10.1051/0004-6361:20078357
  2. Mermilliod, J.-C. (1986), "Compilation of Eggen's UBV data, transformed to UBV (unpublished)", Catalogue of Eggen's UBV Data. SIMBAD, Bibcode:1986EgUBV........0M
  3. Gray, R. O.; et al. (July 2006). "Contributions to the Nearby Stars (NStars) Project: Spectroscopy of Stars Earlier than M0 within 40 pc-The Southern Sample". The Astronomical Journal. 132 (1): 161–170. arXiv:astro-ph/0603770. Bibcode:2006AJ....132..161G. doi:10.1086/504637.
  4. Nordström, B.; et al. (May 2004), "The Geneva-Copenhagen survey of the Solar neighbourhood: Ages, metallicities, and kinematic properties of 14,000 F and G dwarfs", Astronomy and Astrophysics, 418: 989–1019, arXiv:astro-ph/0405198, Bibcode:2004A&A...418..989N, doi:10.1051/0004-6361:20035959
  5. Tokovinin, Andrei (April 2014), "From Binaries to Multiples. II. Hierarchical Multiplicity of F and G Dwarfs", The Astronomical Journal, 147 (4): 14, arXiv:1401.6827, Bibcode:2014AJ....147...87T, doi:10.1088/0004-6256/147/4/87, 87


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