R Ursae Minoris
Star in the constellation Ursa Minor / From Wikipedia, the free encyclopedia
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.[3]
Quick Facts Observation data Epoch J2000 Equinox J2000, Constellation ...
Observation data Epoch J2000 Equinox J2000 | |
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Constellation | Ursa Minor |
Right ascension | 16h 29m 57.8923s[2] |
Declination | +72° 16′ 49.166″[2] |
Apparent magnitude (V) | 8.5-11.5[3] |
Characteristics | |
Spectral type | M7IIIe[3] |
Variable type | semiregular variable[3] |
Astrometry | |
Proper motion (μ) | RA: 11.973±0.085[2] mas/yr Dec.: 13.976±0.092[2] mas/yr |
Parallax (π) | 2.6648 ± 0.0629 mas[2] |
Distance | 1,220 ± 30 ly (375 ± 9 pc) |
Absolute magnitude (MV) | +2.461[4] (var) |
Details | |
Mass | 1.71[5] M☉ |
Radius | 686[6] R☉ |
Surface gravity (log g) | −0.46[5] cgs |
Temperature | 2,875[5] K |
Metallicity [Fe/H] | +0.07[5] dex |
Other designations | |
Database references | |
SIMBAD | data |
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