HD 53143
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Carina |
| A | |
| Right ascension | 06h 59m 59.65505s |
| Declination | −61° 20′ 10.2526″ |
| Apparent magnitude (V) | 6.80 |
| B | |
| Right ascension | 06h 59m 56.17524s |
| Declination | −61° 44′ 59.8415″ |
| Characteristics | |
| A | |
| Evolutionary stage | main sequence |
| Spectral type | G9 V |
| U−B color index | +0.43 |
| B−V color index | +0.80 |
| B | |
| Evolutionary stage | Red dwarf |
| Spectral type | M5.0 |
| Variable type | Flare star |
| Astrometry | |
| A | |
| Radial velocity (Rv) | +21.3 km/s |
| Proper motion (μ) | RA: −161.873 mas/yr Dec.: +264.836 mas/yr |
| Parallax (π) | 54.5252±0.0145 mas |
| Distance | 59.82 ± 0.02 ly (18.340 ± 0.005 pc) |
| Absolute magnitude (MV) | 6.30 |
| B | |
| Proper motion (μ) | RA: −159.849 mas/yr Dec.: +263.734 mas/yr |
| Parallax (π) | 54.1045±0.0245 mas |
| Distance | 60.28 ± 0.03 ly (18.483 ± 0.008 pc) |
| Details | |
| A | |
| Radius | 0.85±0.02 R☉ |
| Luminosity | 0.7 L☉ |
| Temperature | 5,224 K |
| Metallicity [Fe/H] | 0.22 dex |
| Rotation | 9.6±0.1 days |
| Rotational velocity (v sin i) | 4.0±1.0 km/s |
| Age | 1.01±0.13 Gyr |
| B | |
| Mass | 0.129±0.004 M☉ |
| Radius | 0.160±0.005 R☉ |
| Luminosity | (1.46±0.04)×10−3 L☉ |
| Surface gravity (log g) | 5.15 cgs |
| Temperature | 2,979±81 K |
| Rotation | 0.336186 days |
| Other designations | |
| A: GJ 260, CD−61°1535, HD 53143, LTT 2715, SAO 249700, HIP 33690 | |
| B: TIC 167812509, 2MASS J06595620-6145001, WISE J065955.94-614457.0 | |
| Database references | |
| SIMBAD | A |
| B | |
HD 53143 is a binary star in the Carina constellation, located 59.8 light-years (18.3 parsecs) from the Earth. With an apparent visual magnitude of 6.80, this star is a challenge to view with the naked eye even under ideal viewing conditions.