HD 87883
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Leo Minor |
| Right ascension | 10h 08m 43.140s[1] |
| Declination | +34° 14′ 32.13″[1] |
| Apparent magnitude (V) | 7.56 |
| Characteristics | |
| Spectral type | K0V |
| Apparent magnitude (B) | 8.53 |
| Apparent magnitude (J) | 5.839 |
| Apparent magnitude (H) | 5.441 |
| Apparent magnitude (K) | 5.314 |
| B−V color index | 0.97 |
| Astrometry | |
| Radial velocity (Rv) | +9.1 km/s |
| Proper motion (μ) | RA: −64.04±0.53[1] mas/yr Dec.: −60.51±0.34[1] mas/yr |
| Parallax (π) | 54.93 ± 0.54 mas[1] |
| Distance | 59.4 ± 0.6 ly (18.2 ± 0.2 pc) |
| Absolute magnitude (MV) | 6.28 |
| Details | |
| Mass | 0.82±0.04 M☉ |
| Radius | 0.76±0.03 R☉ |
| Luminosity | 0.32 L☉ |
| Surface gravity (log g) | 4.47 cgs |
| Temperature | 4980±44 K |
| Metallicity [Fe/H] | 0.093±0.04 dex |
| Age | 9.8 Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
| Exoplanet Archive | data |
| ARICNS | data |
HD 87883 is an 8th magnitude K-type main sequence star located approximately 59 light years away in the constellation Leo Minor. The age of this star is 9.8 billion years, compared with 4.6 billion years for our Sun. In August 2009, this star was found to have a radial velocity planet.[2]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | ≥ 1.78±0.34 MJ | 3.6±0.08 | 2754±87 | 0.53±0.12 | — | — |
See also
References
- ^ a b c d e 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.Vizier catalog entry
- ^ a b Fischer, Debra; et al. (2009). "Five planets and an independent confirmation of HD 196885 Ab from Lick Observatory". The Astrophysical Journal. 703 (2): 1545–1556. arXiv:0908.1596. Bibcode:2009ApJ...703.1545F. doi:10.1088/0004-637X/703/2/1545.
 | This main-sequence-star-related article is a stub. You can help Wikipedia by expanding it. |
 | This extrasolar-planet-related article is a stub. You can help Wikipedia by expanding it. |