HD 10307
HD 10307 (HR 483) is a spectroscopic binary star in the constellation Andromeda. The primary is similar to the Sun in mass, temperature and metal content. situated about 42 light-years from Earth Its companion, HR 483 B, is a little-studied red dwarf.
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Andromeda |
| Right ascension | 01h 41m 47.1431s |
| Declination | +42° 36′ 48.4435″ |
| Apparent magnitude (V) | 4.95 / 11 |
| Characteristics | |
| Spectral type | G1.5 V + M V |
| U−B color index | 0.11 |
| B−V color index | 0.62 |
| Astrometry | |
| Radial velocity (Rv) | 3.1±0.12 km/s |
| Proper motion (μ) | RA: 813.337±0.380 mas/yr Dec.: −171.027±0.464 mas/yr |
| Parallax (π) | 79.08 ± 0.63 mas |
| Distance | 41.2 ± 0.3 ly (12.6 ± 0.1 pc) |
| Absolute magnitude (MV) | 4.43 |
| Absolute bolometric magnitude (Mbol) | 4.32±0.06 |
| Orbit | |
| Period (P) | 19.542±0.014 yr |
| Semi-major axis (a) | 0.6104±0.0097″ |
| Eccentricity (e) | 0.4367±0.0020 |
| Inclination (i) | 100.36±0.89° |
| Longitude of the node (Ω) | 32.25±0.35° |
| Periastron epoch (T) | 2016.702±0.012 |
| Argument of periastron (ω) (secondary) | 27.15±0.35° |
| Semi-amplitude (K1) (primary) | 2.7160±0.0072 km/s |
| Details | |
| HD 10307 A | |
| Mass | 0.95±0.11 M☉ |
| Radius | 1.14±0.04 R☉ |
| Luminosity | 1.44 L☉ |
| Surface gravity (log g) | 4.3±0.1 cgs |
| Temperature | 5,878±60 K |
| Metallicity [Fe/H] | +0.00±0.06 dex |
| Rotational velocity (v sin i) | 1.5±1.0 km/s |
| Age | 7.0 Gyr |
| HD 10307 B | |
| Mass | 0.254±0.019 M☉ |
| Luminosity | 0.0013 L☉ |
| Other designations | |
| Database references | |
| SIMBAD | HD 10307 |
| ARICNS | HD 10307 A |
| HD 10307 B | |
HD 10307 was identified in September 2003 by astrobiologist Margaret Turnbull from the University of Arizona in Tucson as one of the most promising nearby candidates for hosting life based on her analysis of the HabCat list of stars.
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