R Puppis
HD 62058, (Variable star designation R Puppis, R Pup) is a variable star in the constellation Puppis. It is a rare yellow hypergiant and a candidate member of the open cluster NGC 2439. It is also an MK spectral standard for the class G2 0-Ia.
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Puppis |
| Right ascension | 07h 40m 52.597s |
| Declination | −31° 39′ 40.20″ |
| Apparent magnitude (V) | 6.50 - 6.71 |
| Characteristics | |
| Spectral type | G2 0-Ia |
| U−B color index | +0.85 |
| B−V color index | +1.18 |
| Variable type | SRd |
| Astrometry | |
| Radial velocity (Rv) | +68.22 km/s |
| Proper motion (μ) | RA: −2.251 mas/yr Dec.: +3.222 mas/yr |
| Parallax (π) | 0.2440 ± 0.0180 mas |
| Distance | 13,400 ± 1,000 ly (4,100 ± 300 pc) |
| Absolute magnitude (MV) | −7.8 |
| Details | |
| Mass | 14.3 M☉ |
| Radius | 477 R☉ |
| Luminosity | 96,607 L☉ |
| Surface gravity (log g) | 0.30 cgs |
| Temperature | 6,561 K |
| Metallicity [Fe/H] | −0.25 dex |
| Other designations | |
| Database references | |
| SIMBAD | data |
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.