HD 114837 is a suspected binary star[7][3] 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.[2] It has a magnitude 10.2 candidate common proper motion companion at an angular separation of 4.2″, as of 2014.[3] The distance to this system, based on an annual parallax shift of 55.0143″ as seen from Earth's orbit,[1] is 59.3 light years. It is moving closer with a heliocentric radial velocity of −64 km/s,[5] and will approach to within 21.8 ly in around 240,600 years.[11]
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Centaurus |
Right ascension | 13h 14m 15.14594s[1] |
Declination | –59° 06′ 11.6528″[1] |
Apparent magnitude (V) | 4.90[2] + 10.2[3] |
Characteristics | |
Spectral type | F6 V Fe-0.4[4] |
B−V color index | 0.489±0.020[2] |
Astrometry | |
Radial velocity (Rv) | −64.0±0.3[5] km/s |
Proper motion (μ) | RA: −249.254[1] mas/yr Dec.: −153.256[1] mas/yr |
Parallax (π) | 55.0143 ± 0.2644 mas[1] |
Distance | 59.3 ± 0.3 ly (18.18 ± 0.09 pc) |
Absolute magnitude (MV) | 3.73[6] |
Details | |
HD 114837 A | |
Mass | 1.14[7] M☉ |
Radius | 1.3[8] R☉ |
Luminosity | 3.12[2] L☉ |
Surface gravity (log g) | 4.21[9] cgs |
Temperature | 6,346±80[9] K |
Metallicity [Fe/H] | −0.27[9] dex |
Rotational velocity (v sin i) | 8.8±3.0[6] km/s |
Age | 3.40[9] 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,[4] showing a mild underabundance of iron in its spectrum. It is about 3.4[9] billion years old with 1.14[7] times the mass of the Sun and about 1.3[8] times the Sun's radius. This star is radiating 3.12[2] times the Sun's luminosity from its photosphere at an effective temperature of 6,346 K.[9]