Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Apus |
Right ascension | 16h 57m 01.0485s[1] |
Declination | −71° 06′ 41.9212″[1] |
Apparent magnitude (V) | 6.48±0.01[2] |
Characteristics | |
Spectral type | A5 IV/V[3] |
U−B color index | +0.15[4] |
B−V color index | +0.26[4] |
Astrometry | |
Radial velocity (Rv) | −15.0±0.5[5] km/s |
Proper motion (μ) | RA: −8.941[1] mas/yr Dec.: −36.107[1] mas/yr |
Parallax (π) | 3.2415 ± 0.0204 mas[1] |
Distance | 1,006 ± 6 ly (308 ± 2 pc) |
Absolute magnitude (MV) | −0.95[6] |
Details | |
Mass | 2.2[7] M☉ |
Radius | 10.01[8] R☉ |
Luminosity | 193[8] L☉ |
Surface gravity (log g) | 2.85[7] cgs |
Temperature | 7,155[7] K |
Metallicity [Fe/H] | −1.49[7] dex |
Rotational velocity (v sin i) | 61.5±2.5[9] km/s |
Age | 179[10] Myr |
Other designations | |
Database references | |
SIMBAD | data |
HD 152010 is a solitary star in the southern circumpolar constellation Apus. It has an apparent magnitude of 6.48, placing it near the max visibility for the naked eye. Located 1,006 light years[1]away, the object is approaching the Solar System with a heliocentric radial velocity of −15 km/s.[5]
This A-type star has either luminosity class intermediate between a subgiant and a main sequence star. At present it has 2.2 times the mass of the Sun but has expanded to 10 times its diameter. It shines at 193 L☉ from its enlarged photosphere at an effective temperature of 7,155 K, giving it a white glow. HD 152010 is 179 million years old − 2.1% past the main sequence − and spins quickly with a projected rotational velocity of 61.5 km/s. There is a 12th magnitude companion star at an angular separation of 2.9″ along a position angle of 162° (as of 2016).[11]