Beta Coronae Australis

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β Coronae Australis
Diagram showing star positions and boundaries of the Corona Australis constellation and its surroundings
Cercle rouge 100%.svg

Location of β CrA (circled)
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Corona Australis
Right ascension 19h 10m 01.7569s[1]
Declination −39° 20′ 26.866″[1]
Apparent magnitude (V) 4.117[1]
Characteristics
Spectral type K0II[1]
U−B color index +1.07[2]
B−V color index +1.20[2]
R−I color index +0.61[2]
Astrometry
Radial velocity (Rv) 2.7 ± 0.9[1] km/s
Proper motion (μ) RA: 5.89[1] mas/yr
Dec.: −36.78[1] mas/yr
Parallax (π) 6.42 ± 0.90[1] mas
Distance approx. 510 ly
(approx. 160 pc)
Absolute magnitude (MV) −1.8[3]
Other designations
β CrA, Beta Coronae Australis, Beta CrA, CD−39 13146, CPD−39 8327, GC 26380, HD 178345, HIP 94160, HR 7259, PPM 298639, SAO 211005.[1]
Database references
SIMBAD data

Beta Coronae Australis (Beta CrA, β Coronae Australis, β CrA) is a K-type bright giant star in the constellation of Corona Australis.[1] It has an apparent visual magnitude of approximately 4.117.[1] Located around 500 light-years distant, it shines with a luminosity approximately 620 times that of the Sun and has a surface temperature of 4771 K.[4]

References[edit]

  1. ^ a b c d e f g h i j k * bet CrA -- Star, database entry, SIMBAD. Accessed on line September 5, 2008.
  2. ^ a b c HR 7259, database entry, The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version), D. Hoffleit and W. H. Warren, Jr., CDS ID V/50. Accessed on line September 5, 2008.
  3. ^ From apparent magnitude and parallax.
  4. ^ McDonald, I.; Zijlstra, A. A.; Boyer, M. L. (2012). "Fundamental Parameters and Infrared Excesses of Hipparcos Stars". Monthly Notices of the Royal Astronomical Society. 427 (1): 343–57. Bibcode:2012MNRAS.427..343M. arXiv:1208.2037Freely accessible. doi:10.1111/j.1365-2966.2012.21873.x.