Gamma Coronae Australis

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γ Coronae Australis
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Corona Australis
Right ascension 19h 06m 25.11014s
Declination −37° 03′ 48.3901″
Apparent magnitude (V) 4.20
Characteristics
Spectral type F8V+F8V
Astrometry
Radial velocity (Rv) −51.60 ± 0.3 km/s
Proper motion (μ) RA: 96.74 ± 1.05[1] mas/yr
Dec.: −281.71 ± 0.58[1] mas/yr
Parallax (π) 57.79 ± 0.75[1] mas
Distance 56.4 ± 0.7 ly
(17.3 ± 0.2 pc)
Other designations
γ CrA, Gamma Coronae Australis, Gamma CrA, HD 177474J, HIP 93825, SAO 210928
Database references
SIMBAD data

Gamma Coronae Australis (y CrA), is a star located in the constellation Corona Australis. Gamma Coronae Australis is also known as HR 7226, and HD 177474. The star is a spectroscopic binary. The system is located at Right Ascension 19h 06m 25s and Declination -37 deg 03 arcmin 48 arcsec. The system has a combined apparent visual magnitude of +4.26 is located 18 pc (58 light years) from the Sun.

Gamma Coronae Australis A is an F8V dwarf star with an effective temperature of 5500 Kelvin. It has an apparent visual magnitude of +4.9, an absolute magnitude of +2.97, and a mass of 1.2 solar masses.

Gamma Coronae Australis B, also known as HR 7227, and HD 177475 is an F8V dwarf star with an effective temperature of 5500 Kelvin. It has an apparent visual magnitude of +5, an absolute magnitude of +2.97, and a mass of 1.2 solar masses.

The angular separation of A and B is just 4.5 arcsec.

References[edit]

  1. ^ a b c van Leeuwen, F. (November 2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. arXiv:0708.1752free to read. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357.