V Puppis
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Puppis |
| Right ascension | 07h 58m 14.43920s |
| Declination | −49° 14′ 41.6803″ |
| Apparent magnitude (V) | 4.41 (5.10 + 5.59) |
| Characteristics | |
| Spectral type | B1Vp + B3IV: |
| U−B color index | −0.96 |
| B−V color index | −0.17 |
| Variable type | β Lyr |
| Astrometry | |
| Radial velocity (Rv) | +20.0±1.1 km/s |
| Proper motion (μ) | RA: −5.53±0.26 mas/yr Dec.: +8.27±0.25 mas/yr |
| Parallax (π) | 2.40±0.23 mas |
| Distance | 1,400 ± 100 ly (420 ± 40 pc) |
| Absolute magnitude (MV) | −3.56 |
| Orbit | |
| Primary | V Pup A |
| Name | V Pup B |
| Period (P) | 1.4544859 d |
| Semi-major axis (a) | 14.96±0.20 R☉ |
| Eccentricity (e) | 0 |
| Inclination (i) | 80.5±0.3° |
| Semi-amplitude (K1) (primary) | 175.4±3.2 km/s |
| Semi-amplitude (K2) (secondary) | 338.8±5.4 km/s |
| Orbit | |
| Primary | V Pup AB |
| Name | V Pup C |
| Period (P) | 14.0344±0.0026 yr |
| Semi-major axis (a) | 17.88±0.15 au |
| Eccentricity (e) | 0.4587±0.0046 |
| Inclination (i) | 87.9±3.3° |
| Longitude of the node (Ω) | 4.6+5.7 −3.3° |
| Periastron epoch (T) | 2,460,860.6±6.4 JD |
| Argument of periastron (ω) (secondary) | 202.55±0.46° |
| Semi-amplitude (K1) (primary) | 11.353+0.073 −0.071 km/s |
| Details | |
| V Pup A | |
| Mass | 14.0±0.5 M☉ |
| Radius | 5.48±0.18 R☉ |
| Luminosity | 12,600±2,100 L☉ |
| Temperature | 26,000±1,000 K |
| Rotational velocity (v sin i) | 246±5 km/s |
| Age | 5.0±0.8 Myr |
| V Pup B | |
| Mass | 7.3±0.3 M☉ |
| Radius | 4.59±0.15 R☉ |
| Luminosity | 6,500+1,300 −1,100 L☉ |
| Temperature | 24,000±1,000 K |
| Rotational velocity (v sin i) | 209±6 km/s |
| Age | 5.0±0.8 Myr |
| V Pup C | |
| Mass | 7.73±0.14 M☉ |
| Other designations | |
| CD−48°3349, CCDM J07582-4915A, GC 10802, GSC 08143−03239, HIP 38957, HR 3129, HD 65818, SAO 219226, WDS J07582-4915A | |
| Database references | |
| SIMBAD | data |
V Puppis (V Pup) is a star system in the constellation Puppis. It has an apparent magnitude of 4.41, which is bright enough to be seen with the naked eye. Based on parallax measurements, it lies at a distance of 420 parsecs (1,400 light-years).