Nu Microscopii

From Wikipedia, the free encyclopedia
Jump to: navigation, search
Nu Microscopii
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Microscopium
Right ascension 20h 33m 55.07245s .[1]
Declination −44° 30′ 57.7709″ [1]
Apparent magnitude (V) 5.12
Characteristics
Spectral type KOIII
Astrometry
Parallax (π) 13.94 ± 0.34[2] mas
Distance 234 ± 6 ly
(72 ± 2 pc)
Other designations
Nu Microscopii, Nu Mic, HD 195569, HIP 101477, HR 7846, SAO 230276

Nu Microscopii is a star in the constellation Microscopium. It is an orange giant star of spectral type K0III and apparent magnitude is 5.13.[1] Located around 258 light-years distant, it shines with a luminosity approximately 52 times that of the Sun and has a surface temperature of 4834 K.[3]

It was first catalogued as Nu Indi by the French explorer and astronomer Nicolas Louis de Lacaille in 1756, before being reclassified in Microscopium and given its current Bayer designation of Nu Microscopii by Gould.[4]

References[edit]

  1. ^ a b c SIMBAD, Nu Microscopii (accessed 20 March 2015)
  2. ^ van Leeuwen, F. (2007). "Validation of the New Hipparcos Reduction". Astronomy and Astrophysics 474 (2): 653–64. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. 
  3. ^ 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. ^ Wagman, Morton (2003). Lost Stars: Lost, Missing and Troublesome Stars from the Catalogues of Johannes Bayer, Nicholas Louis de Lacaille, John Flamsteed, and Sundry Others. Blacksburg, Virginia: The McDonald & Woodward Publishing Company. pp. 181, 210. ISBN 978-0-939923-78-6.