Castor (Star)

Color-magnitude diagram
Image of Castor
R/B-band color composite image from the Second Digitized Sky Survey (DSS2), measuring 30 arcminutes across.
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From Ashburn , Castor is visible in the evening sky, becoming accessible around 18:09 (EST), 28° above your eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 23:18, 82° above your southern horizon. It will continue to be observable until around 05:55, when it sinks below 12° above your north-western horizon.

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Name Castor
Object type Star
Other names
Castor
YY Gem
α-Gem
Alpha Geminorum
66-Gem
66 Geminorum
HR 2891[1]
HD 60179
HIP 36850[3]
Position
Constellation:Gemini
Magnitude:
Variable
1.58 (V) [2]
B-V Color (mag):0.03
Right ascension:07h34m36s [2]
Declination:+31°53'19" [2]
Distance:15.6 parsec
50.8 lightyrs [3]
Proper motion (speed):240.3 mas/yr [3]
Proper motion (pos ang):232.8°
Derived quantities
Absolute mag (V):0.61
Visibility from Ashburn

All times shown in Ashburn local time.

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Ashburn

Latitude:
Longitude:
Timezone:

39.04°N
77.49°W
EST

Color scheme