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]
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 | |
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]