V372 Carinae

V372 Carinae is a single^[10] star in the southern constellation of Carina. Located around 1,350 light-years distant. It shines with a luminosity approximately 4,236 times that of the Sun and has a surface temperature of 21,429 K.^[6] It is a Beta Cephei variable.^[5] A magnitude 5.7 star, it will be faintly visible on moonless nights to the naked eye of a person located far from city lights.

V372 Carinae

A light curve for V372 Carinae, plotted from TESS data[1]
Observation data Epoch J2000      Equinox J2000
Constellation	Carina[2]
Right ascension	07h 52m 29.74164s[3]
Declination	−54° 22′ 01.7889″[3]
Apparent magnitude (V)	5.70[2]
Characteristics
Spectral type	B1.5IV[4]
B−V color index	−0.151±0.004[2]
Variable type	Beta Cephei[5]
Astrometry
Radial velocity (Rv)	+18.0±4.3[2] km/s
Proper motion (μ)	RA: −4.642[3] mas/yr Dec.: +8.605[3] mas/yr
Parallax (π)	2.4079±0.0633 mas[3]
Distance	1,350 ± 40 ly (420 ± 10 pc)
Absolute magnitude (MV)	−2.35[2]
Details
Mass	8.3[6] M☉
Radius	6.97[3] R☉
Luminosity	4,236[6] L☉
Surface gravity (log g)	3.65[3] cgs
Temperature	21,429[6] K
Rotational velocity (v sin i)	155[7] km/s
Age	15.8±2.2[8] Myr
Other designations
V372 Car, CD−54°1966, HD 64722, HIP 38438, HR 3088, SAO 235579[9]
Database references
SIMBAD	data

In 1977, Mikołaj Jerzykiewicz and Christiaan Sterken announced their discovery that the star is variable.^[11] It was given its variable-star designation, V372 Carinae, in 1981.^[12] The brightness of V372 Carinae varies by up to three hundredths of a magnitude with a fairly regular period of 2.8 hours.^[13]