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Doubles in session
Current system
20521+4438
HER 18
Nearby doubles
9' : 20525+4430
BRT2279
20' : 20532+4423
LSC 94
20' : 20538+4443
LDS5914
21' : 20509+4421
CHN 30AB
23' : 20506+4421
CHN 29
25' : 20512+4415
CHN 31
25' : 20511+4459
LDS2459
32' : 20494+4452
TDS1103
33' : 20549+4451
LDS2466
34' : 20504+4518
SMA 121
35' : 20494+4458
GRV 384
38' : 20542+4508
LDS5915
41' : 20501+4404
STT 595AB
41' : 20556+4453
COU2648
42' : 20558+4448
ES 674
42' : 20541+4507
STT 422
43' : 20514+4519
ARG 40
47' : 20563+4447
ES 675AB
49' : 20535+4523
HDS2975
49' : 20565+4447
TOB 203
49' : 20500+4521
ES 2702
49' : 20565+4452
LDS2470
50' : 20567+4439
BRT2283
51' : 20504+4525
LDS5912
52' : 20566+4455
TRN 30
53' : 20520+4346
STT 416AB
Selections
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Binary Systems
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Neglected List I
Neglected List II
Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.
WDS 20521+4438 : VIRTUAL EYEPIECE
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Radius:
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Components only
WDS 20521+4438 : ALADIN DSS IMAGE @ 20
h
52
m
03.78
s
+44° 37' 28.9"
DSS color
DSS blue
2MASS
AllWISE
GALEX
SDSS9
XMM
PanSTARRS