81-UMa (Star)
R/B-band color composite image from the Second Digitized Sky Survey (DSS2), measuring 30 arcminutes across.
From Cambridge , 81-UMa is visible in the dawn sky, becoming accessible around 01:24 (EST), when it reaches an altitude of 21° above your north-eastern horizon. It will then reach an altitude of 51° before fading from view as dawn breaks at 05:29.
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Name
81-UMa
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Object type
Star
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Other names
Position
| Right ascension: | 13h34m07s [6] |
| Declination: | +55°20'54" [6] |
| Constellation: | Ursa Major |
| Magnitude: Variable | 5.60 (V) [3] 5.58 (BT) [2] 5.59 (VT) [2] 5.59 (G) [6] 5.57 (BP) [6] 5.60 (RP) [6] |
| Distance: | 92.3 parsec 301.0 lightyrs [6] |
| B-V Color (mag): | -0.02 |
| Proper motion (speed): | 20.0 mas/yr[6] |
| Proper motion (pos ang): | 252.6° |
Derived quantities
| Absolute mag (V): | 0.77 |
Sources