HD 114837
HD 114837 is a suspected binary star system in the southern constellation of Centaurus. The brighter star is faintly visible to the naked eye with an apparent visual magnitude of 4.90. It has a magnitude 10.2 candidate common proper motion companion at an angular separation of 4.2″, as of 2014. The distance to this system, based on an annual parallax shift of 55.0143″ as seen from Earth's orbit, is 59.3 light years. It is moving closer with a heliocentric radial velocity of −64 km/s, and will approach to within 21.8 ly in around 240,600 years.
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Centaurus |
| Right ascension | 13h 14m 15.14594s |
| Declination | –59° 06′ 11.6528″ |
| Apparent magnitude (V) | 4.90 + 10.2 |
| Characteristics | |
| Spectral type | F6 V Fe-0.4 |
| B−V color index | 0.489±0.020 |
| Astrometry | |
| Radial velocity (Rv) | −64.0±0.3 km/s |
| Proper motion (μ) | RA: −249.254 mas/yr Dec.: −153.256 mas/yr |
| Parallax (π) | 55.0143 ± 0.2644 mas |
| Distance | 59.3 ± 0.3 ly (18.18 ± 0.09 pc) |
| Absolute magnitude (MV) | 3.73 |
| Details | |
| HD 114837 A | |
| Mass | 1.14 M☉ |
| Radius | 1.3 R☉ |
| Luminosity | 3.12 L☉ |
| Surface gravity (log g) | 4.21 cgs |
| Temperature | 6,346±80 K |
| Metallicity [Fe/H] | −0.27 dex |
| Rotational velocity (v sin i) | 8.8±3.0 km/s |
| Age | 3.40 Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
The primary component is an F-type main-sequence star with a stellar classification of F6 V Fe-0.4, showing a mild underabundance of iron in its spectrum. It is about 3.4 billion years old with 1.14 times the mass of the Sun and about 1.3 times the Sun's radius. This star is radiating 3.12 times the Sun's luminosity from its photosphere at an effective temperature of 6,346 K.