Castor (Star)
Color-magnitude diagram
Red-band image from the Second Digitized Sky Survey (DSS2), measuring 30 arcminutes across.
Finder chart
Click and drag the chart above to pan around the sky, or use the mouse wheel to zoom.
Click to enlarge.
From Fairfield , Castor is not readily observable since it is very close to the Sun, at a separation of only 13° from it.
Begin typing the name of a town near to you, and then select the town from the list of options
which appear below.
|
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 |