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]
| 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 |
| Distance | 103 ± 1 ly (31.6 ± 0.4 pc) |
| Absolute magnitude (MV) | 3.71[4] |
| Details | |
| HD 88218 A | |
| Mass | 1.29[5] M☉ |
| Surface gravity (log g) | 4.13[3] cgs |
| Temperature | 5,944[3] K |
| Metallicity [Fe/H] | 0.08[3] dex |
| Age | 8.3[4] Gyr |
| HD 88218 B | |
| Mass | 0.69[5] M☉ |
| Other designations | |
| Database references | |
| SIMBAD | data |
| Database references | |
| SIMBAD | data |
References
- 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
- Mermilliod, J.-C. (1986), "Compilation of Eggen's UBV data, transformed to UBV (unpublished)", Catalogue of Eggen's UBV Data. SIMBAD, Bibcode:1986EgUBV........0M
- 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.
- 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
- 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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