| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Ara |
| Right ascension | 17h 00m 06.27939s[1] |
| Declination | −54° 35′ 49.8371″[1] |
| Apparent magnitude (V) | 5.65[2] |
| Characteristics | |
| Spectral type | A5 IV-V[3] |
| U−B color index | 0.1 |
| B−V color index | +0.19[2] |
| Astrometry | |
| Radial velocity (Rv) | -20.2[4] km/s |
| Proper motion (μ) | RA: -7.70[1] mas/yr Dec.: -72.18[1] mas/yr |
| Parallax (π) | 19.30 ± 0.35 mas[1] |
| Distance | 169 ± 3 ly (51.8 ± 0.9 pc) |
| Details | |
| Mass | 1.8[5] M☉ |
| Luminosity | 12.3[5] L☉ |
| Temperature | 8,000[5] K |
| Rotational velocity (v sin i) | 102.8±0.7[6] km/s |
| Age | 420[5] Myr |
| Other designations | |
| 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.[3] It has a twelfth magnitude visual companion at an angular separation of 24.7″ along a position angle of 52°.[7] Mostly likely the two are isolated stars that happen to lie near the same line of sight.[8]
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.[5]
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