HD 157819

HD 157819
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 mas[1]
Distanceapprox. 1,000 ly
(approx. 300 pc)
Absolute magnitude (MV)–2.9[5]
Other designations
HD 157819, HIP 85520, HR 6487, SAO 244770.[6]
Database references
SIMBADdata

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.

  1. ^ a b c d e f Cite error: The named reference aaa474_2_653 was invoked but never defined (see the help page).
  2. ^ a b c Cite error: The named reference mnrassa27_11 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference houk1979 was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference al32_11_759 was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference aj88_1187 was invoked but never defined (see the help page).
  6. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).