τ-Dra (Star)
R/B-band color composite image from the Second Digitized Sky Survey (DSS2), measuring 30 arcminutes across.
From Cambridge , τ-Dra is very well placed – it is close enough to the north celestial pole that it is high above the horizon all night.
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Name
τ-Dra
|
Object type
Star
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Other names
Position
| Right ascension: | 19h15m33s [2] |
| Declination: | +73°21'19" [2] |
| Constellation: | Draco |
| Magnitude: Variable | 4.46 (V) [2] 6.09 (BT) [2] 4.59 (VT) [2] |
| Distance: | 44.9 parsec 146.3 lightyrs [3] |
| B-V Color (mag): | 1.27 |
| Proper motion (speed): | 154.8 mas/yr[3] |
| Proper motion (pos ang): | 311.8° |
Derived quantities
| Absolute mag (V): | 1.20 |
Sources