HD 157819
From Infogalactic: the planetary knowledge core
| Observation data Epoch J2000 Equinox J2000 |
|
|---|---|
| Constellation | Ara |
| Right ascension | 17h 28m 38.91416s[1] |
| Declination | –55° 10′ 10.8720″[1] |
| Apparent magnitude (V) | 5.94[2] |
| Characteristics | |
| Spectral type | G8 II-III[3] |
| B−V color index | +1.11[2] |
| Astrometry | |
| Radial velocity (Rv) | –12.6 ± 0.4[4] km/s |
| Proper motion (μ) | RA: +2.52[1] mas/yr Dec.: -8.92[1] mas/yr |
| Parallax (π) | 3.31 ± 0.41[1] mas |
| Distance | approx. 1,000 ly (approx. 300 pc) |
| Absolute magnitude (MV) | –2.9[5] |
| Other designations | |
HD 157819 is the Henry Draper Catalogue designation for a star in the southern constellation of Ara. It is faintly visible to the naked eye at an apparent visual magnitude of 5.94[2] and is approximately 1,000 light-years (310 parsecs) distant from the Earth.[1] The spectrum of this star fits a stellar classification of G8 II-III,[3] indicating it is a G-type star that is somewhere between the giant and bright giant stages of its evolution.
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