PT Puppis
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Puppis |
| Right ascension | 07h 36m 41.03388s |
| Declination | −19° 42′ 08.4211″ |
| Apparent magnitude (V) | 5.720–5.740 |
| Characteristics | |
| Spectral type | B2 II |
| Variable type | Beta Cephei |
| Astrometry | |
| Radial velocity (Rv) | +22.00 ± 4.3 km/s |
| Proper motion (μ) | RA: −7.86 ± 0.21 mas/yr Dec.: 5.81 ± 0.20 mas/yr |
| Parallax (π) | 1.93±0.28 mas |
| Distance | approx. 1,700 ly (approx. 520 pc) |
| Details | |
| Mass | 7.94 M☉ |
| Luminosity | 6405 L☉ |
| Temperature | 19400 K |
| Other designations | |
| PT Puppis, HR 2928, HD 61068, HIP 37036, SAO 153149 | |
| Database references | |
| SIMBAD | data |
PT Puppis (PT Pup) is a star in the constellation Puppis. Anamarija Stankov confirmed this star as a Beta Cephei variable. Analysis of its spectrum and allowing for extinction gives a mass 7.94 times that of the Sun, a surface temperature of 19,400 K and luminosity of 6405 Suns.
The star was discovered to be variable by Janet Rountree Lesh and P. R. Wesselius in 1979. It was given its variable star designation in 1981.