Beta Caeli
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Caelum |
| Right ascension | 04h 42m 03.482s |
| Declination | −37° 08′ 39.59″ |
| Apparent magnitude (V) | 5.04 |
| Characteristics | |
| Spectral type | F3 V or F3 IV |
| U−B color index | +0.01 |
| B−V color index | +0.38 |
| Astrometry | |
| Radial velocity (Rv) | 27.47±0.24 km/s |
| Proper motion (μ) | RA: +42.561 mas/yr Dec.: +212.705 mas/yr |
| Parallax (π) | 34.6088±0.0531 mas |
| Distance | 94.2 ± 0.1 ly (28.89 ± 0.04 pc) |
| Absolute magnitude (MV) | +2.64 |
| Orbit | |
| Primary | A |
| Companion | B |
| Period (P) | 7.5 yr |
| Semi-major axis (a) | 4.6 AU |
| Eccentricity (e) | 0.6 |
| Inclination (i) | 27 or 153° |
| Longitude of the node (Ω) | 151° |
| Argument of periastron (ω) (secondary) | 38° |
| Details | |
| β Cae A | |
| Mass | 1.482±0.040 M☉ |
| Radius | 1.902+0.001 −0.004 R☉ |
| Luminosity | 6.615+0.020 −0.019 L☉ |
| Surface gravity (log g) | 3.981+0.003 −0.002 cgs |
| Temperature | 6,665.7+1.6 −1.4 K |
| Metallicity | = −0.12 |
| Rotation | 0.8669±0.0013 days |
| Rotational velocity (v sin i) | 97.5±4.9 km/s |
| Age | 0.2 or 1.17 Gyr 1.941±0.307 Gyr |
| β Cae B | |
| Mass | 0.08 or 0.2 M☉ |
| Temperature | 3,593±160 K |
| Other designations | |
| β Cae, CD−37°1867, FK5 1130, GJ 176.1, GJ 9165, HD 29992, HIP 21861, HR 1503, SAO 195239 | |
| Database references | |
| SIMBAD | data |
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Beta Caeli is a star with an orbiting companion in the southern constellation of Caelum. Its name is a Bayer designation that is Latinized from β Caeli, and abbreviated Beta Cae or β Cae. This star is dimly visible to the naked eye, having an apparent visual magnitude of 5.04. Based upon an annual parallax shift of 34.6 mas as seen from Earth, it is located at a distance of 94 light-years (29 pc). The star is moving away from the Sun with a radial velocity of +27.5 km/s.