HD 63032
 The field of cluster NGC 2451; c Puppis is the brightest star in the frame |
|
| Observation data Epoch J2000 Equinox J2000 |
|
|---|---|
| Constellation | Puppis |
| Right ascension | 07h 45m 15.29642s |
| Declination | −37° 58′ 06.8998″ |
| Apparent magnitude (V) | 3.61 |
| Characteristics | |
| Spectral type | K2.5Ib-IIa（K5IIa） + B9V |
| Apparent magnitude (U) | 7.06 |
| Apparent magnitude (B) | 5.34 |
| Apparent magnitude (R) | 2.26 |
| Apparent magnitude (I) | 1.26 |
| Apparent magnitude (J) | 0.68 |
| Apparent magnitude (H) | -0.075 ± 0.220 |
| Apparent magnitude (K) | -0.47 |
| U−B color index | 1.72 |
| B−V color index | 1.73 |
| Astrometry | |
| Radial velocity (Rv) | 16.83 ± 0.14 km/s |
| Proper motion (μ) |
RA: -10.18±0.18 mas/yr Dec.: 6.34±0.21 mas/yr |
| Parallax (π) | 2.88 ± 0.19mas |
| Distance | 1,130 ± 70 ly (350 ± 20 pc) |
| Details | |
| Mass | 9.8±2.1/2.8±0.2 M☉ |
| Radius | 202±25/2.4±0.1 R☉ |
| Luminosity | 9600±1700/65±4 L☉ |
| Temperature | A:4000±150/B:10,200 ± 300 K |
| Other designations | |
| Database references | |
| SIMBAD | data |
c Puppis, also known as HD 63032 and HR 3017, is a spectroscopic binary star in the constellation Puppis. Its apparent magnitude is 3.61. Located around 347 parsecs (1,130 ly) distant, the primary is an orange-red bright giant or supergiant of spectral type K2.5Ib-IIa or K5IIa, while the secondary, discovered in 1983, is a blue main-sequence star of spectral type B9V. The system is the brightest member of the open cluster NGC 2451, over two magnitudes brighter than every other star in the cluster. As the turnoff point of the cluster is currently around B7, the parameters of the system fit with cluster membership.
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