Gamma1 Caeli
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Caelum |
| γ1 Caeli A | |
| Right ascension | 05h 04m 24.402s |
| Declination | −35° 28′ 58.71″ |
| Apparent magnitude (V) | 4.57±0.01 |
| γ1 Caeli B | |
| Right ascension | 05h 04m 24.191s |
| Declination | −35° 28′ 56.86″ |
| Apparent magnitude (V) | 8.07±0.01 |
| Characteristics | |
| γ1 Caeli A | |
| Spectral type | K2III-IIIb |
| U−B color index | 1.197 |
| B−V color index | 1.198 |
| γ1 Caeli B | |
| Spectral type | G8IV |
| B−V color index | 0.84 |
| Astrometry | |
| γ1 Caeli A | |
| Radial velocity (Rv) | 9.96±0.19 km/s |
| Proper motion (μ) | RA: 125.972 mas/yr Dec.: −42.909 mas/yr |
| Parallax (π) | 17.5912±0.0834 mas |
| Distance | 185.4 ± 0.9 ly (56.8 ± 0.3 pc) |
| γ1 Caeli B | |
| Proper motion (μ) | RA: 123.107 mas/yr Dec.: −45.167 mas/yr |
| Parallax (π) | 17.5332 ± 0.024 mas |
| Distance | 186.0 ± 0.3 ly (57.03 ± 0.08 pc) |
| Details | |
| γ1 Caeli A | |
| Mass | 1.4+1.1 −0.4 M☉ |
| Radius | 14.31+0.27 −0.56 R☉ |
| Luminosity | 69.9±0.8 L☉ |
| Temperature | 4,411+89 −41 K |
| Metallicity [Fe/H] | −0.1 dex |
| Rotational velocity (v sin i) | <1 km/s |
| γ1 Caeli B | |
| Mass | 0.91 M☉ |
| Surface gravity (log g) | 4.45 cgs |
| Temperature | 5,702 K |
| Metallicity [Fe/H] | −0.1 dex |
| Other designations | |
| γ1 Cae, CD−35 2089, HD 32831, HIP 23595, HR 1652, SAO 195532, WDS J05044-3529 | |
| Database references | |
| SIMBAD | The system |
| A | |
| B | |
Gamma1 Caeli is a double star in the southern constellation of Caelum. Its name is a Bayer designation that is Latinized from γ1 Caeli, and abbreviated Gamma1 Cae or γ1 Cae. This pair consists of an orange hued giant and a fainter yellow subgiant star with an angular separation of 3.20″, as of 2016. The brighter component is faintly visible to the naked eye with an apparent visual magnitude of 4.57. Based on parallax measurements, it is located at a distance of approximately 185 light-years (57 pc) from the Earth. This star is drifting further away from the Sun with a radial velocity of +10 km/s.