HD 75063

This article is about a Velorum. For A Velorum, see HD 72108.

HD 75063 is a single^[9] star in the southern constellation of Vela. It has the Bayer designation of a Velorum, while HD 75063 is the identifier from the Henry Draper Catalogue. This is a naked-eye star with an apparent visual magnitude of 3.87^[1] and has a white hue. The star is located at a distance of approximately 1,900 light-years from the Sun based on parallax measurements and has an absolute magnitude of −4.89.^[1] It is drifting further away with a radial velocity of +23 km/s.^[1]

HD 75063

Observation data Epoch J2000.0      Equinox J2000.0
Constellation	Vela[1]
Right ascension	08h 46m 01.64391s[2]
Declination	−46° 02′ 29.5042″[2]
Apparent magnitude (V)	3.87[1]
Characteristics
Spectral type	A1III[3] or A0 II[4]
B−V color index	0.015±0.029[1]
Astrometry
Radial velocity (Rv)	+23.2±0.3[1] km/s
Proper motion (μ)	RA: −12.82[2] mas/yr Dec.: +4.23[2] mas/yr
Parallax (π)	1.76±0.14 mas[2]
Distance	1,900 ± 100 ly (570 ± 50 pc)
Absolute magnitude (MV)	−4.89[1]
Details
Mass	8.6±0.3[5] M☉
Radius	41[6] R☉
Luminosity	6,800[6] L☉
Temperature	8,195[6] K
Rotational velocity (v sin i)	30[7] km/s
Age	30.6±2.6[5] Myr
Other designations
a Vel, CD−45°4517, HD 75063, HIP 43023, HR 3487, SAO 220422[8]
Database references
SIMBAD	data

This object has been stellar classifications of A1III^[3] and A0 II,^[4] matching a massive A-type giant or bright giant star, respectively. It is an estimated 31 million years old^[5] and is spinning with a projected rotational velocity of 30 km/s.^[7] The star has 8.6 times the mass of the Sun^[5] and around 4.5 times the Sun's radius. The star is radiating 6,800 times the Sun's luminosity from its photosphere at an effective temperature of 8,195 K.^[5]