Gamma1 Caeli
Double star in the constellation Caelum / From Wikipedia, the free encyclopedia
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.
Quick Facts Observation data Epoch J2000 Equinox J2000, Apparent magnitude (V) ...
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Caelum |
γ1 Caeli A | |
Right ascension | 05h 04m 24.40s[1] |
Declination | −35° 28′ 58.69″[1] |
Apparent magnitude (V) | 4.57±0.01[2] |
γ1 Caeli B | |
Right ascension | 05h 04m 24.19s[3] |
Declination | −35° 28′ 56.85″[3] |
Apparent magnitude (V) | 8.07±0.01[2] |
Characteristics | |
γ1 Caeli A | |
Spectral type | K2III-IIIb[4] |
γ1 Caeli B | |
Spectral type | G8IV[5] |
Astrometry | |
γ1 Caeli A | |
Radial velocity (Rv) | 9.96±0.19[1] km/s |
Proper motion (μ) | RA: 125.430±0.283 mas/yr[1] Dec.: −44.017±0.315 mas/yr[1] |
Parallax (π) | 17.6430 ± 0.1673 mas[1] |
Distance | 185 ± 2 ly (56.7 ± 0.5 pc) |
γ1 Caeli B | |
Proper motion (μ) | RA: 123.083±0.075[3] mas/yr Dec.: −45.344±0.100[3] mas/yr |
Parallax (π) | 17.3832 ± 0.0490 mas[3] |
Distance | 187.6 ± 0.5 ly (57.5 ± 0.2 pc) |
Details | |
γ1 Caeli A | |
Mass | 1.4+1.1 −0.4[6] M☉ |
Radius | 14.31+0.27 −0.56[1] R☉ |
Luminosity | 69.9±0.8[1] L☉ |
Temperature | 4411+89 −41[1] K |
Metallicity [Fe/H] | -0.1[6] dex |
Rotational velocity (v sin i) | <1[7] km/s |
γ1 Caeli B | |
Mass | 0.91[8] M☉ |
Surface gravity (log g) | 4.45[8] cgs |
Temperature | 5,702[8] K |
Metallicity [Fe/H] | -0.1[8] 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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