Observation data Epoch J2000 Equinox J2000 | |
---|---|
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 |
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]
Observation data Epoch J2000 Equinox J2000 | |
---|---|
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 |
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]