| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Puppis |
| Right ascension | 07h 36m 41.03388s [2] |
| Declination | −19° 42′ 08.4211″ [2] |
| Apparent magnitude (V) | 5.720–5.740 [3] |
| 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 [2] mas/yr Dec.: 5.81 ± 0.20 [2] mas/yr |
| Parallax (π) | 1.93±0.28 mas [2] |
| Distance | approx. 1,700 ly (approx. 520 pc) |
| Details | |
| Mass | 7.94 [4] M☉ |
| Luminosity | 6405 [4] L☉ |
| Temperature | 19400 [4] 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. [5] 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. [4]
The star was discovered to be variable by Janet Rountree Lesh and P. R. Wesselius in 1979. [6] It was given its variable star designation in 1981. [7]
