Astronomy:HD 95808
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Short description: Star in the constellation Crater
| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| Constellation | Crater |
| Right ascension | 11h 03m 14.87973s[1] |
| Declination | −11° 18′ 12.4981″[1] |
| Apparent magnitude (V) | 5.50[2] |
| Characteristics | |
| Spectral type | G7-IIIb[3] |
| B−V color index | +0.94[2] |
| Astrometry | |
| Radial velocity (Rv) | −8.90 ± 0.10[4] km/s |
| Proper motion (μ) | RA: −81.61[1] mas/yr Dec.: −108.01[1] mas/yr |
| Parallax (π) | 9.63 ± 0.69[1] mas |
| Distance | 340 ± 20 ly (104 ± 7 pc) |
| Details[4] | |
| Mass | 2.43 ± 0.15 M☉ |
| Radius | 10.10 ± 0.76 R☉ |
| Luminosity | 64.6 L☉ |
| Surface gravity (log g) | 3.05 ± 0.07 cgs |
| Temperature | 5029 ± 34 K |
| Metallicity [Fe/H] | −0.04 ± 0.03 dex |
| Rotational velocity (v sin i) | 2.27 ± 0.45 km/s |
| Age | 0.68 ± 0.13 Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
HD 95808 is a double star in the constellation of Crater. Its apparent magnitude is 5.50,[2] but interstellar dust makes it appear 0.11 magnitudes dimmer than it should be.[4] It is located some 340 light-years (104 parsecs) away, based on parallax.[1]
HD 95808 is a G-type giant star. At an age of 680 million years old, it has swelled up to a radius of 10.1 times that of the Sun, and it is 2.43 times as massive. It emits 64.6 times as much energy as the Sun at a surface temperature of 5,029 K.[4]
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics 474 (2): 653–664. doi:10.1051/0004-6361:20078357. Bibcode: 2007A&A...474..653V.
- ↑ 2.0 2.1 2.2 Corben, P. M. (1966). "Photoelectric magnitudes and colours for bright southern stars". Monthly Notes of the Astron. Soc. Southern Africa 25: 44. Bibcode: 1966MNSSA..25...44C.
- ↑ Keenan, Philip C.; McNeil, Raymond C. (1989). "The Perkins catalog of revised MK types for the cooler stars". The Astrophysical Journal Supplement Series 71: 245. doi:10.1086/191373. Bibcode: 1989ApJS...71..245K.
- ↑ 4.0 4.1 4.2 4.3 Jofré, E.; Petrucci, R.; Saffe, C.; Saker, L.; de la Villarmois, E. Artur; Chavero, C.; Gómez, M.; Mauas, P. J. D. (2015). "Stellar parameters and chemical abundances of 223 evolved stars with and without planets". Astronomy & Astrophysics 574: A50. doi:10.1051/0004-6361/201424474. Bibcode: 2015A&A...574A..50J.
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