HD 76143
Star in the constellation Volans
From Wikipedia, the free encyclopedia
HD 76143 (HR 3537) is a high proper motion star located in the southern circumpolar constellation Volans. With an apparent magnitude of 5.33,[2] its faintly visible to the naked eye. The star is located 173 light years[1] away from the Solar System, but is drifting with a radial velocity of 40.5 km/s.[1]
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Volans |
| Right ascension | 8h 50m 34.82s[1] |
| Declination | –66° 47′ 34.74″[1] |
| Apparent magnitude (V) | 5.33±0.01[2] |
| Characteristics | |
| Spectral type | F5 IV[3] |
| U−B color index | +0.07[4] |
| B−V color index | +0.42[4] |
| Astrometry | |
| Radial velocity (Rv) | 40.54±0.72[1] km/s |
| Proper motion (μ) | RA: +92.718[1] mas/yr Dec.: +98.946[1] mas/yr |
| Parallax (π) | 18.8133±0.1088 mas[1] |
| Distance | 173 ± 1 ly (53.2 ± 0.3 pc) |
| Absolute magnitude (MV) | +1.76[5] |
| Details | |
| Mass | 1.4+2.9 −1.9[6] M☉ |
| Radius | 3.21+0.17 −0.1[1] R☉ |
| Luminosity | 17±0.1[1] L☉ |
| Surface gravity (log g) | 3.66±0.14[7] cgs |
| Temperature | 6544+107 −164[1] K |
| Metallicity | 115% |
| Metallicity [Fe/H] | +0.06±0.15[5] dex |
| Rotational velocity (v sin i) | 140[8] km/s |
| Age | 2.03[7] Gyr |
| Other designations | |
| 43 G. Volantis, CPD–66 927, HIP 43414, HR 3537, SAO 250347, WDS J08506-6648A | |
| Database references | |
| SIMBAD | data |
Properties
HD 76143 has a classification of "F5 IV",[3] which states its a F-type star that is beginning to evolve off the main sequence. It has 40% more mass than the Sun,[6] but has 3.21[1] times the radius of the latter. It radiates at 17 solar luminosities[1] at an effective temperature of 6,544 K,[1] which gives it a yellowish-white hue. HD 76143 rotates at a high projected rotational velocity of 140 km/s,[8] which gives it an equatorial bulge 10% [8] larger than its poles. The star has a faint 12 magnitude companion separated 36.7 arcseconds apart.[9]