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Binary star system in the constellation Puppis From Wikipedia, the free encyclopedia
HD 63922 is a class B0III[3] (blue giant) star in the constellation Puppis. Its apparent magnitude is 4.11[2] and it is approximately 1600 light years away based on parallax.[1]
 | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Puppis |
| Right ascension | 07h 49m 14.29536s[1] |
| Declination | −46° 22′ 23.5422″[1] |
| Apparent magnitude (V) | 4.11[2] |
| Characteristics | |
| Spectral type | B0III[3] |
| U−B color index | −1.01[2] |
| B−V color index | −0.18[2] |
| Astrometry | |
| Radial velocity (Rv) | +24.00[4] km/s |
| Proper motion (μ) | RA: -4.37[1] mas/yr Dec.: +8.66[1] mas/yr |
| Parallax (π) | 1.98 ± 0.28 mas[1] |
| Distance | approx. 1,600 ly (approx. 510 pc) |
| Absolute magnitude (MV) | -4.37[5] |
| Details | |
| Mass | 19.3[6] M☉ |
| Luminosity | 3209[5] L☉ |
| Surface gravity (log g) | 3.95[7] cgs |
| Temperature | 31,200[7] K |
| Metallicity [Fe/H] | +0.16[5] dex |
| Rotational velocity (v sin i) | 49[3] km/s |
| Other designations | |
| Database references | |
| SIMBAD | data |
It is a multiple star; the primary has one close companion, Ab, at 0.3" separation and magnitude 7.19, and a more distant one, B, at 59.1" and 8.79 magnitude.[8]
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