HD 157819
Star in the constellation Ara / From Wikipedia, the free encyclopedia
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.
Quick Facts Observation data Epoch J2000 Equinox J2000, Constellation ...
Observation data Epoch J2000 Equinox J2000 | |
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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 mas[1] |
Distance | approx. 1,000 ly (approx. 300 pc) |
Absolute magnitude (MV) | –2.9[5] |
Other designations | |
Database references | |
SIMBAD | data |
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