k Puppis
Star in the constellation Puppis / From Wikipedia, the free encyclopedia
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k Puppis (k Pup, k Puppis) is a Bayer designation given to an optical double star in the constellation Puppis, the two components being k1 Puppis and k2 Puppis.
Quick Facts Apparent magnitude (V), Characteristics ...
Observation data Epoch J2000.0 Equinox J2000.0 | |
---|---|
Constellation | Puppis |
k1 Pup | |
Right ascension | 07h 38m 49.380s[1] |
Declination | −26° 48′ 06.49″[1] |
Apparent magnitude (V) | +4.50[2] |
k2 Pup | |
Right ascension | 07h 38m 49.869s[1] |
Declination | −26° 48′ 13.80″[1] |
Apparent magnitude (V) | +4.429[1] |
Characteristics | |
k1 | |
Spectral type | B6 V[3] |
k2 | |
Spectral type | B5 IV[3] |
Variable type | SX Ari[4] |
Astrometry | |
Parallax (π) | 9.41 ± 0.80 mas[5] |
Distance | 350 ± 30 ly (106 ± 9 pc) |
k1 | |
Absolute magnitude (MV) | −1.19[6] |
k2 | |
Absolute magnitude (MV) | −0.94[6] |
Details[6] | |
k1 | |
Mass | 4.3±0.3 M☉ |
Radius | 3.7+1.2 −0.6 R☉ |
Luminosity | 490 L☉ |
Surface gravity (log g) | 4.24±0.15 cgs |
Temperature | 13,600±1,200 K |
Rotational velocity (v sin i) | 114±5 km/s |
k2 | |
Mass | 6.0±0.3 M☉ |
Radius | 3.0+0.7 −0.3 R☉ |
Luminosity | 1,202 L☉ |
Surface gravity (log g) | 4.10±0.15 cgs |
Temperature | 18,500±500 K |
Rotational velocity (v sin i) | 61±5 km/s |
Other designations | |
k1: HR 2948, HD 61555, SAO 174198 | |
k2: HR 2949, HD 61556, SAO 174199 | |
Database references | |
SIMBAD | k Puppis |
k1 | |
k2 |
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