τ-UMa (Star)
R/B-band color composite image from the Second Digitized Sky Survey (DSS2), measuring 30 arcminutes across.
From South El Monte , τ-UMa is visible in the dawn sky, becoming accessible around 02:21 (PDT), when it reaches an altitude of 19° above your north-eastern horizon. It will then reach an altitude of 39° before fading from view as dawn breaks at 05:35.
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Name
τ-UMa
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Object type
Star
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Other names
Position
| Right ascension: | 09h10m55s [2] |
| Declination: | +63°30'49" [2] |
| Constellation: | Ursa Major |
| Magnitude: | 4.65 (V) [2] 5.08 (BT) [2] 4.68 (VT) [2] |
| Distance: | 38.7 parsec 126.3 lightyrs [3] |
| B-V Color (mag): | 0.33 |
| Proper motion (speed): | 120.5 mas/yr[3] |
| Proper motion (pos ang): | 121.8° |
Derived quantities
| Absolute mag (V): | 1.71 |
Sources