Castor (Star)
Color-magnitude diagram
Red-band image from the Second Digitized Sky Survey (DSS2), measuring 30 arcminutes across.
Finder chart
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From Cambridge , Castor is not readily observable since it is very close to the Sun, at a separation of only 10° from it.
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|
Name
Castor
|
Object Type
Star
|
Position
| Constellation: | Gemini |
| Magnitude: Variable | 1.58 (V) [1] |
| B-V Color (mag): | 0.03 |
| Right ascension: | 07h34m36s [1] |
| Declination: | +31°53'19" [1] |
| Distance: | 15.6 parsec 50.8 lightyrs [2] |
| Proper motion (speed): | 240.3 mas/yr [2] |
| Proper motion (pos ang): | 232.8° |
Derived Quantities
| Absolute mag (V): | 0.61 |