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Show the direction and distance to this object on the Galactic Map.

Proper Name	Castor
Bayer Designation	Alpha^2,1 Geminorum, Alpha Geminorum A, B
Flamsteed Number	66 Geminorum
HR (BSC)	2891 (A), 2890 (B)
HD	60179 (A), 60178 (B)
Constellation	Gemini
Right Ascension	7h 34m 36s
Declination	+31° 53' 18"
Distance	51 light years 16 parsecs
Magnitude	Apparent: +1.6 (A), +2.9 (B) Absolute: +0.6 (A), +1.9 (B)
Spectral Class	A1V white main sequence star (A), A2Vm white main sequence star (B)
Optimum Visibility	January / February
Notes	Castor is a multiple star system consisting of three close binary pairs. Two of these binaries, Castor A and Castor B, follow a relatively close orbit around one other, while the fainter variable binary Castor C pursues a more distant orbit around the primary pair.

A complex multiple star that shines brightly in the north of Gemini. Though designated 'Alpha', it is not the brightest star in its constellation: its magnitude is actually somewhat less than that of its mythical twin, Pollux.

07 34 35.870 +31 53 17.82

FoV: 3.49°

The relatively bright star seen here to the west (right) of Castor is Rho Geminorum. This bright yellow dwarf is only a few light years more distant from the Sun than Castor, but is a cooler and less luminous star than its prominent neighbour in the sky. Imagery provided by Aladin sky atlas

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