τ-UMa (Star)
Color-magnitude diagram
R/B-band color composite image from the Second Digitized Sky Survey (DSS2), measuring 30 arcminutes across.
Finder chart
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From Cambridge , τ-UMa is visible all night because it is circumpolar. It will be highest in the sky at 23:10, 68° above your northern horizon. At dusk, it will become visible at around 18:23 (EST), 44° above your north-eastern horizon. It will be lost to dawn twilight at around 05:31, 35° above your north-western horizon.
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|
Name
τ-UMa
|
Object type
Star
|
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 |
Visibility from Cambridge
All times shown in Cambridge local time.