HD 41534

HD 41534 is a binary star^[11] system in the southern constellation of Columba. It is dimply visible to the naked eye with a combined apparent visual magnitude of 5.65.^[2] The distance to this system is approximately 950 light-years based on parallax,^[1] and it is receding from the Sun with a radial velocity of +93 km/s.^[5] This is a runaway star system with an unusually high peculiar velocity of 187.6+12.2
−13.8 km/s.^[12] It is thought to have been ejected from the OB association Sco OB 1 approximately 14 million years ago.^[13]

HD 41534

Observation data Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation	Columba
Right ascension	06h 04m 20.26492s[1]
Declination	−32° 10′ 20.7434″[1]
Apparent magnitude (V)	5.65[2]
Characteristics
Evolutionary stage	main sequence
Spectral type	B2V[3]
U−B color index	−0.82[4]
B−V color index	−0.186±0.003[2]
Astrometry
Radial velocity (Rv)	+93.0±3.7[5] km/s
Proper motion (μ)	RA: −16.144[1] mas/yr Dec.: +121.467[1] mas/yr
Parallax (π)	3.4507±0.0857 mas[1]
Distance	950 ± 20 ly (290 ± 7 pc)
Absolute magnitude (MV)	−1.78[2]
Details
Mass	6.9+0.75 −0.68[6] M☉
Radius	3.90[7] R☉
Luminosity	1621.15[2] L☉
Surface gravity (log g)	4.0±0.25[6] cgs
Temperature	20,000±1,000[6] K
Rotational velocity (v sin i)	122[8] km/s
Age	14+13 −8[6] Myr
Other designations
72G. Col[9], CD−32°1008, FK5 41534, GC 7708, HD 41534, HIP 28756, HR 2149, SAO 196459, PPM 282235, CCDM J06043-3210AB, WDS J06043-3210AB[10]
Database references
SIMBAD	data

The primary component is a B-type main-sequence star with a stellar classification of B2V.^[3] It displays microvariability with an amplitude of 0.0086 in magnitude and a frequency of 0.11316 cycles per day.^[14] The star is an estimated 14^[6] million years old with a high rate of spin, showing a projected rotational velocity of 122.^[8] It has seven^[6] times the mass of the Sun and about four^[7] times the Sun's radius. HD 41534 is radiating over 1,600^[2] times the luminosity of the Sun from its photosphere at an effective temperature of 20,000 K.^[6]