HD 153221
Double star in the constellation Ara
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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°.[4]
Right ascension17h 00m 26.95941s[2]
Declination−48° 38′ 51.9319″[2]
Apparentmagnitude(V)6.00[3] (6.34 + 7.69)[4]
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Ara[1] |
| Right ascension | 17h 00m 26.95941s[2] |
| Declination | −48° 38′ 51.9319″[2] |
| Apparent magnitude (V) | 6.00[3] (6.34 + 7.69)[4] |
| Characteristics | |
| Spectral type | G8/K0 III + G[5] |
| B−V color index | +0.88[3] |
| Astrometry | |
| Radial velocity (Rv) | −28.6[6] km/s |
| Proper motion (μ) | RA: −17.93[2] mas/yr Dec.: −80.49[2] mas/yr |
| Parallax (π) | 9.36±0.75 mas[2] |
| Distance | 350 ± 30 ly (107 ± 9 pc) |
| Absolute magnitude (MV) | +0.85[1] |
| Details | |
| Luminosity | 49.5[7] L☉ |
| Temperature | 4,993[7] K |
| Rotational velocity (v sin i) | 4.4[8] km/s |
| Other designations | |
| CD−48°11360, HD 153221, HIP 83216, HR 6300, SAO 227542 | |
| Database references | |
| SIMBAD | data |