HD 120084
HD 120084 is a star with an orbiting exoplanet in the northern constellation of Ursa Minor. With an apparent magnitude of 5.91, it is just visible to the naked eye in suburban skies. The distance to this system is 339 light years based on parallax measurements, but it is drifting closer to the Sun with a radial velocity of −9 km/s.
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Ursa Minor |
| Right ascension | 13h 42m 39.201616s |
| Declination | +78° 03′ 51.979994″ |
| Apparent magnitude (V) | 5.91 |
| Characteristics | |
| Spectral type | G7III |
| B−V color index | 1.000 |
| Astrometry | |
| Radial velocity (Rv) | −8.97±0.13 km/s |
| Proper motion (μ) | RA: −64.900±0.031 mas/yr Dec.: 46.164±0.033 mas/yr |
| Parallax (π) | 9.6277 ± 0.0258 mas |
| Distance | 338.8 ± 0.9 ly (103.9 ± 0.3 pc) |
| Absolute magnitude (MV) | +0.96 |
| Details | |
| Mass | 1.93 M☉ |
| Radius | 7.81 R☉ |
| Luminosity | 43.7 L☉ |
| Surface gravity (log g) | 2.94±0.14 cgs |
| Temperature | 4,969±40 K |
| Metallicity [Fe/H] | 0.12±0.03 dex |
| Rotational velocity (v sin i) | 2.44 km/s |
| Other designations | |
| Database references | |
| SIMBAD | data |
This is an evolved G-type giant star, a yellow giant, with a stellar classification of G7III. It has an effective temperature of around 4892 K, with around 1.9 times the mass, 43 times the luminosity and 8 times the radius of the Sun.
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