PT Puppis

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]

PT Puppis

A light curve for PT Puppis, plotted from TESS data[1]
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

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]