a
Geminorum (Castor)
component
year
position angle
angular separation
magnitude of 1st component
magnitude of 2nd component
spectral class(es)
AB
1819
270°
4.5''
2
2.9
A1V A2Vm
1992
73°
3.3''
AC
1835
164°
72.5''
2
8.8
-
1990
-
71.2''
AD
1902
222°
204.4''
2
-
-
BC
1862
160°
70.4''
2.9
8.7
-
1957
163°
69.5''
a
Geminorum HR2890 (Comp A)
a
Geminorum HR2891 (Comp B)
YY Gem (Component C)
38 Geminorum
component
year
position angle
angular separation
magnitude of 1st component
magnitude of 2nd component
spectral class(es)
AB
1822
179°
5,7''
4,74
7,68
F0Vp
1990
147°
7,3''
AC
1912
328°
109,3''
4,7
10,3
-
1932
-
111,5''
HR 2564 (Component A)