NR Vulpeculae

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NR Vulpeculae
Observation data
Epoch J2000      Equinox J2000
Constellation Vulpecula
Right ascension 19h 50m 11.9270s[1]
Declination 24° 55′ 24.183″[1]
Apparent magnitude (V) 9.13 - 9.61[2]
Characteristics
Spectral type M1Ia[2]
Variable type LC[2]
Astrometry
Proper motion (μ) RA: −1.435[1] mas/yr
Dec.: −6.223[1] mas/yr
Parallax (π)−0.08 ± 0.63[1] mas
Details
Radius980[3] R
Diameter980[3] D
Luminosity225,000[3] L
Temperature4,000[3] K
Database references
SIMBADdata

NR Vulpeculae is a red supergiant and irregular variable star in the constellation Vulpecula. It is one of the largest known stars.

References[edit]

  1. 1.0 1.1 1.2 1.3 1.4 Gaia Collaboration; Brown, A. G. A.; Vallenari, A.; Prusti, T.; De Bruijne, J. H. J.; Mignard, F.; Drimmel, R.; Babusiaux, C. et al. (2016). "Gaia Data Release 1. Summary of the astrometric, photometric, and survey properties". Astronomy & Astrophysics 595: A2. arXiv:1609.04172. Bibcode 2016A&A...595A...2G. doi:10.1051/0004-6361/201629512.
  2. 2.0 2.1 2.2 NR Vul, database entry, The combined table of GCVS Vols I-III and NL 67-78 with improved coordinates, General Catalogue of Variable Stars, Sternberg Astronomical Institute, Moscow, Russia. Accessed on line November 12, 2010.
  3. 3.0 3.1 3.2 Levesque, Emily M.; Massey, Philip; Olsen, K. A. G.; Plez, Bertrand; Josselin, Eric; Maeder, Andre; Meynet, Georges (August 2005). "The Effective Temperature Scale of Galactic Red Supergiants: Cool, but Not As Cool As We Thought". The Astrophysical Journal 628 (2): 973–985. arXiv:astro-ph/0504337. Bibcode 2005ApJ...628..973L. doi:10.1086/430901.


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