Gamma1 Caeli
Gamma1 Caeli, Latinized from γ1 Caeli, is a double star in the constellation Caelum. It consists of a K-type giant, and a G-type subgiant.
Location of γ1 Caeli | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Caelum |
| γ1 Caeli A | |
| Right ascension | 05h 04m 24.40s |
| Declination | −35° 28′ 58.69″ |
| Apparent magnitude (V) | 4.57±0.01 |
| γ1 Caeli B | |
| Right ascension | 05h 04m 24.19s |
| Declination | −35° 28′ 56.85″ |
| Apparent magnitude (V) | 8.07±0.01 |
| Characteristics | |
| γ1 Caeli A | |
| Spectral type | K2III-IIIb |
| γ1 Caeli B | |
| Spectral type | G8IV |
| Astrometry | |
| γ1 Caeli A | |
| Radial velocity (Rv) | 9.96±0.19 km/s |
| Proper motion (μ) | RA: 125.430±0.283 mas/yr Dec.: −44.017±0.315 mas/yr |
| Parallax (π) | 17.6430 ± 0.1673 mas |
| Distance | 185 ± 2 ly (56.7 ± 0.5 pc) |
| γ1 Caeli B | |
| Proper motion (μ) | RA: 123.083±0.075 mas/yr Dec.: −45.344±0.100 mas/yr |
| Parallax (π) | 17.3832 ± 0.0490 mas |
| Distance | 187.6 ± 0.5 ly (57.5 ± 0.2 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 | 4411+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 | |
| A: CD−35 2089A, HD 32831A, WDS J05044-3529A | |
| B: CD−35 2089B, HD 32831B, WDS J05044-3529B | |
| Database references | |
| SIMBAD | The system |
| A | |
| B | |
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