HD 114837
Binary star system in the constellation Centaurus
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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.[1] It has a magnitude 10.2 candidate common proper motion companion at an angular separation of 4.2â³, as of 2014.[3] The distance to this system, based on an annual parallax shift of 54.825â³ as seen from Earth's orbit,[2] is 59.5 light years. It is moving closer with a heliocentric radial velocity of â64 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[1] |
| Right ascension | 13h 14m 15.14474s[2] |
| Declination | â59° 06â² 11.6540â³[2] |
| Apparent magnitude (V) | 4.90[1] + 10.2[3] |
| Characteristics | |
| Evolutionary stage | main sequence[2] |
| Spectral type | F6 V Fe-0.4[4] |
| BâV color index | 0.489±0.020[1] |
| Astrometry | |
| Radial velocity (Rv) | â64.0±0.3[5] km/s |
| Proper motion (μ) | RA: â248.678[2] mas/yr Dec.: â153.176[2] mas/yr |
| Parallax (Ï) | 54.8247±0.0809 mas[2] |
| Distance | 59.49 ± 0.09 ly (18.24 ± 0.03 pc) |
| Absolute magnitude (MV) | 3.73[6] |
| Details | |
| HD 114837 A | |
| Mass | 1.14[7] Mâ |
| Radius | 1.3[8] Râ |
| Luminosity | 3.12[1] Lâ |
| Surface gravity (log g) | 4.21[9] cgs |
| Temperature | 6,346±80[9] K |
| Metallicity [Fe/H] | â0.27[9] dex |
| Rotational velocity (v sin i) | 8.8±3.0[6] km/s |
| Age | 3.40[9] Gyr |
| Other designations | |
| CDâ58°4940, GJ 503, HD 114837, HIP 64583, HR 4989, SAO 240666, WDS J13143-5906A[10] | |
| 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[1] times the Sun's luminosity from its photosphere at an effective temperature of 6,346 K.[9]