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Doubles in session
Current system
20109+3612
SEI 959
Nearby doubles
5' : 20105+3614
SEI 947
8' : 20111+3619
RAO 428
10' : 20101+3617
SEI 939AB
12' : 20115+3604
SEI 972
13' : 20119+3612
BLL 46AB
14' : 20116+3621
SEI 976
14' : 20110+3559
SEI 961
14' : 20101+3602
SEI 938
15' : 20120+3614
TOB 176
15' : 20111+3626
ALI 414
16' : 20117+3600
SEI 978
18' : 20121+3603
SEI 990
19' : 20122+3603
SEI 994
19' : 20095+3623
ALI 409
20' : 20097+3600
SEI 936
20' : 20122+3621
SEI 996AB
20' : 20122+3600
SEI 991
20' : 20115+3630
SEI 971AB
21' : 20108+3552
SEI 954
21' : 20126+3614
SEI1003
22' : 20126+3618
SEI1004AB
22' : 20113+3551
BKO 100
22' : 20098+3629
COU2413
23' : 20114+3552
HJ 1490
23' : 20113+3550
BU 430AB
24' : 20105+3550
SEI 944
Selections
Full WDS
Binocular doubles
Binary Systems
Triple Systems
Quadruple Systems
Multiple Systems
Neglected List I
Neglected List II
Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.
WDS 20109+3612 : COMPONENTS
A
B
pa=66.3°
sep=17.91"
20109+3612 A
Coord arcsec 2000
201050.38+361141.8
Mag
12.52
PmRA
-1.00
PmDE
-5.0
20109+3612 B
Coord arcsec 2000
201051.73+361149.0
Mag
13.29
PmRA
-2.00
PmDE
-7.0
Calc delta mag
0.77
Calc coord
yes