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Star in the constellation Puppis From Wikipedia, the free encyclopedia
HD 69142 is a class K1II-III[3] (orange bright giant) star in the constellation Puppis. Its apparent magnitude is 4.44[2] and it is approximately 298 light years away based on parallax.[1]
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Puppis |
Right ascension | 08h 14m 02.92219s[1] |
Declination | −40° 20′ 52.4031″[1] |
Apparent magnitude (V) | 4.44[2] |
Characteristics | |
Spectral type | K1II-III[3] |
U−B color index | +1.09[2] |
B−V color index | +1.17[2] |
Astrometry | |
Radial velocity (Rv) | +13.50[4] km/s |
Proper motion (μ) | RA: +45.51[1] mas/yr Dec.: -65.60[1] mas/yr |
Parallax (π) | 10.93 ± 0.48 mas[1] |
Distance | 300 ± 10 ly (91 ± 4 pc) |
Absolute magnitude (MV) | -0.38[5] |
Orbit[6] | |
Primary | h2 Puppis Aa |
Companion | h2 Puppis Ab |
Period (P) | 930 days |
Semi-major axis (a) | 10.66 mas |
Eccentricity (e) | 0.4 |
Inclination (i) | 135.2° |
Longitude of the node (Ω) | 181.7° |
Periastron epoch (T) | 2418060 |
Argument of periastron (ω) (secondary) | 140° |
Details | |
Mass | 1.79[7] M☉ |
Radius | 23[7] R☉ |
Luminosity | 207[5] L☉ |
Surface gravity (log g) | 1.97[7] cgs |
Temperature | 4,467[7] K |
Rotational velocity (v sin i) | < 1.0[8] km/s |
Other designations | |
Database references | |
SIMBAD | data |
It is a multiple star; the primary is a spectroscopic binary with a 2.55 year orbit with eccentricity 0.4,[9] and there is a more distant companion B at 59.4" and 9.5 magnitude.[10]
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