HD 153053
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Ara |
| Right ascension | 17h 00m 06.27939s |
| Declination | −54° 35′ 49.8371″ |
| Apparent magnitude (V) | 5.65 |
| Characteristics | |
| Evolutionary stage | main sequence |
| Spectral type | A5 IV-V |
| U−B color index | 0.1 |
| B−V color index | +0.19 |
| Astrometry | |
| Radial velocity (Rv) | −20.2 km/s |
| Proper motion (μ) | RA: −7.70 mas/yr Dec.: −72.18 mas/yr |
| Parallax (π) | 19.30±0.35 mas |
| Distance | 169 ± 3 ly (51.8 ± 0.9 pc) |
| Absolute magnitude (MV) | +2.07 |
| Details | |
| Mass | 1.8 M☉ |
| Luminosity | 12.3 L☉ |
| Temperature | 8,000 K |
| Rotational velocity (v sin i) | 102.8±0.7 km/s |
| Age | 420 Myr |
| Other designations | |
| CPD−54°7947, HD 153053, HIP 83187, HR 6297, SAO 244338 | |
| Database references | |
| SIMBAD | data |
HD 153053 is double star in the southern constellation of Ara. The brighter component is an A-type main sequence star that may be evolving into a subgiant. It has a twelfth magnitude visual companion at an angular separation of 24.7″ along a position angle of 52°. Mostly likely the two are isolated stars that happen to lie near the same line of sight.
This star displays an excess emission of infrared radiation, suggesting the presence of a disk of dusty debris. This disk is orbiting at a radius of 49 AU from the host star.