Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
---|---|
Constellation | Octans |
Right ascension | 00h 13m 19.6219s[1] |
Declination | −84° 59′ 38.3178″[1] |
Apparent magnitude (V) | 5.77[2] |
Characteristics | |
Evolutionary stage | AGB[3] |
Spectral type | M0/1 III[4] |
U−B color index | +2.10[2] |
B−V color index | +1.72[2] |
Variable type | suspected[5] |
Astrometry | |
Radial velocity (Rv) | 4±0.4[6] km/s |
Proper motion (μ) | RA: +11.046 mas/yr[1] Dec.: +17.696 mas/yr[1] |
Parallax (π) | 3.8517 ± 0.0501 mas[1] |
Distance | 850 ± 10 ly (260 ± 3 pc) |
Absolute magnitude (MV) | −1.57[7] |
Details | |
Mass | 1.11[8] M☉ |
Radius | 95.54[9] R☉ |
Luminosity | 1,461[10] L☉ |
Surface gravity (log g) | 0.69[8] cgs |
Temperature | 3,838±122[11] K |
Metallicity [Fe/H] | −0.08[8] dex |
Other designations | |
Database references | |
SIMBAD | data |
HD 1032 (HR 47) is a solitary[14] star in the southern circumpolar constellation Octans. It is faintly visible to the naked eye with an apparent magnitude of 5.77[2] and is estimated to be 850 light years away from the Solar System based on parallax measure.[1] However, it is receding with a heliocentric radial velocity of 4 km/s.
HD 1032 is an asymptotic giant branch[3] star with a stellar classification of M0/1 III[4] — intermediate between a M0 and M1 giant star. It has 111% the mass of the Sun[8] and an enlarged radius of 95.54 R☉[9] as a result of its evolved state. It radiates at 1,461 times the luminosity of the Sun[10] from its photosphere at an effective temperature of 3,838 K,[11] giving a red hue. HD 1032 is slightly metal deficient with an iron abundance 83% that of the Sun.[8]
This is a suspected variable star that fluctuates between magnitudes 5.82 and 5.88 in the Hipparcos passband.[5]