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Current system
21509+4542
KPP 4249
Nearby doubles
34' : 21526+4513
ES 522
35' : 21500+4615
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42' : 21548+4548
STF2846AB
44' : 21532+4619
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45' : 21467+4533
J 616
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COU2318
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TDT3245
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HJ 1689
65' : 21571+4540
COU2235
65' : 21448+4534
TDT3131
66' : 21561+4506
BRT1155
73' : 21473+4644
SRW 11AB
73' : 21444+4611
HJ 1687
75' : 21513+4428
TDT3195
75' : 21444+4610
COU2315
79' : 21439+4517
TDT3123
79' : 21545+4650
ES 2714
79' : 21543+4652
DAM 298
80' : 21450+4633
NSN 748
81' : 21549+4651
DAM 299
82' : 21492+4702
COU2317AB
83' : 21430+4549
ES 1276
84' : 21515+4706
HJ 1701
84' : 21509+4419
HJ 1700
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Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.
WDS 21509+4542 : VIRTUAL EYEPIECE
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Radius:
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Components only
WDS 21509+4542 : ALADIN DSS IMAGE @ 21
h
50
m
54.45
s
+45° 42' 16.2"
DSS color
DSS blue
2MASS
AllWISE
GALEX
SDSS9
XMM
PanSTARRS
