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Proper NameNone
Bayer DesignationNone
Flamsteed NumberNone
BSC5589
HD132813
Other designationsRR Ursae Minoris
ConstellationUrsa Minor
Right Ascension14h 57m 35s
Declination+65° 55' 57"
Distance459 light years
141 parsecs
MagnitudeApparent: +4.7
Absolute: -1.1
Spectral ClassM4.5III Red Giant
Optimum VisibilityMay (Usually visible from northern latitudes)
NotesRR Ursae Majoris is a red giant star categorised as a pulsating variable. Its magnitude varies from +4.53 to +4.73 over a period averaging 43.3 days, but as a semiregular variable, that period can vary by a considerable degree. This is a binary system, and the primary giant is known to have a companion star orbiting at a distance of at least 0.5 AU.

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