Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Ara |
Right ascension | 17h 00m 26.95941s[1] |
Declination | −48° 38′ 51.9319″[1] |
Apparent magnitude (V) | 6.00[2] (6.34 + 7.69)[3] |
Characteristics | |
Spectral type | G8/K0 III + G[4] |
B−V color index | +0.88[2] |
Astrometry | |
Radial velocity (Rv) | −28.6[5] km/s |
Proper motion (μ) | RA: −17.93[1] mas/yr Dec.: −80.49[1] mas/yr |
Parallax (π) | 9.36 ± 0.75 mas[1] |
Distance | 350 ± 30 ly (107 ± 9 pc) |
Details | |
Luminosity | 49.5[6] L☉ |
Temperature | 4,993[6] K |
Rotational velocity (v sin i) | 4.4[7] km/s |
Other designations | |
Database references | |
SIMBAD | data |
HD 153221 is a double star in the southern constellation of Ara. As of 2012, the pair have an angular separation of 1.10″ along a position angle of 172°.[3]