R Normae

R Nor
Observation data
Epoch J2000      Equinox J2000
Constellation Norma
Right ascension 15h 35m 57.35429s [1]
Declination -49° 30' 28.6817"'[1]
Apparent magnitude (V) 6.5-12.8[2]
Characteristics
Spectral type M3-7
U−B color index ?
B−V color index ?
Variable type Mira
Astrometry
Radial velocity (Rv)-22.0 km/s
Proper motion (μ) RA: - mas/yr
Dec.:  mas/yr
Parallax (π)1.72 ± 2.79 mas
Distanceapprox. 2,000 ly
(approx. 600 pc)
Details
Mass? M☉
Radius? R☉
Luminosity7764[3] L☉
Temperature3161[3] K
Metallicity?
Rotation?
Age? years
Other designations
V* R Nor, HIP 76377, SAO 225948, CD-49° 9787, GSC 08304-00824, HD 138743, GC 20939, HIC 76377.

R Normae is a Mira variable star. It is located near Eta Normae.[4] It ranges from magnitude 6.5 to 12.8 and a period of 496 days.[2] Located around 1900 light-years distant, it shines with a luminosity 7764 times that of the Sun and has a surface temperature of 3161 K.[3]

References

  1. ↑ 1.0 1.1 "V* R Normae -- Variable Star of Mira Ceti type". SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Retrieved 21 March 2015.
  2. ↑ 2.0 2.1 Watson, Christopher (12 March 2014). "R Normae". AAVSO Website. American Association of Variable Star Observers. Retrieved 21 March 2015.
  3. ↑ 3.0 3.1 3.2 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.
  4. ↑ Arnold, H.J.P; Doherty, Paul; Moore, Patrick (1999). The Photographic Atlas of the Stars. Boca Raton, Florida: CRC Press. p. 176. ISBN 9780750306546.