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.
Finder chart
Please wait
Loading 0/4
Click and drag to rotate
Mouse wheel to zoom in/out
Touch with mouse to dismiss
Click and drag the chart above to pan around the sky, or use the mouse wheel to zoom. Click to enlarge.

Show information for


From Ashburn , Castor is visible in the evening sky, becoming accessible around 20:03 (EDT), 77° above your south-eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 20:52, 82° above your southern horizon. It will continue to be observable until around 03:29, when it sinks below 12° above your north-western horizon.

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
Other names
Castor
YY Gem
α-Gem
Alpha Geminorum
66-Gem
66 Geminorum
HR 2891[1]
HD 60179
HIP 36850[4]
TYC 2457-2407-1[3]
Gaia EDR3- 892348694913501952[5]
Position
Right ascension:07h34m35s [5]
Declination:+31°53'18" [5]
Constellation:Gemini
Magnitude:
Variable
1.58 (V) [2]
2.92 (G) [5]
3.21 (BP) [5]
2.80 (RP) [5]
Distance:15.6 parsec
50.8 lightyrs [4]
B-V Color (mag):0.03
Proper motion (speed):240.3 mas/yr[4]
Proper motion (pos ang):232.8°
Derived quantities
Absolute mag (V):0.61
Visibility from Ashburn

All times shown in Ashburn local time.

Share

Ashburn

Latitude:
Longitude:
Timezone:

39.04°N
77.49°W
EDT

Color scheme