R Ursae Minoris

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R Ursae Minoris
Observation data
Epoch J2000      Equinox J2000
Constellation Ursa Minor
Right ascension 16h 29m 57.8935s[1]
Declination +72° 16′ 49.1638″[1]
Apparent magnitude (V) 8.5-11.5[2]
Characteristics
Spectral type M7IIIe[2]
Variable type semiregular variable[2]
Astrometry
Proper motion (μ) RA: 11.642±0.286[1] mas/yr
Dec.: 14.111±0.306[1] mas/yr
Parallax (π)2.5840 ± 0.1132[1] mas
Distance1,260 ± 60 ly
(390 ± 20 pc)
Other designations
R UMi, BD+72°732a, HD 149683, HIP 80802[3]
Database references
SIMBADdata

R Ursae Minoris is a star in the constellation Ursa Minor. A red giant of spectral type M7IIIe, it is a semiregular variable ranging from magnitude 8.5 to 11.5 over a period of 325 days.[2]

References[]

  1. ^ a b c d e Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
  2. ^ a b c d Watson, Christopher (4 January 2010). "RR Ursae Minoris". AAVSO Website. American Association of Variable Star Observers. Retrieved 10 March 2015.
  3. ^ "R UMi". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2019-10-10.


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