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Current system
20520+4009
MLB 955


Nearby doubles
17' : 20526+4024
GRV 391

27' : 20514+3945
MLB 779AB

28' : 20515+3944
DAM 317AB

28' : 20498+3958
SEI1267

32' : 20531+3940
SEI1292

41' : 20495+4035
COU2426

41' : 20556+4004
TDT2634

41' : 20488+4024
ALI1192

42' : 20486+4000
TOB 198

42' : 20490+3947
STF2731AB

42' : 20545+3937
BRT2281

43' : 20544+4042
STT 420

44' : 20514+3927
TDT2581

44' : 20511+4051
TDT2578

44' : 20484+4002
SEI1255AB

45' : 20546+4042
ES 1685AB

45' : 20528+3925
SEI1290

45' : 20553+3944
SEI1315

45' : 20551+3941
MLB 886

46' : 20558+3951
LDS2469

47' : 20481+3958
CVR 231

48' : 20544+3929
BKO 469

49' : 20549+3933
BKO 471

49' : 20555+3940
MLB 783

49' : 20547+3929
GRV 395

53' : 20550+3929
SEI1311



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Neglected List I
Neglected List II
Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.
 
 
WDS 20520+4009 : COMPONENTS
 
 
  A
B pa=21.6°
sep=6.33"
 
 
20520+4009 A
 
 
Componente originario normalizzato AB Coord arcsec 2000 205206.91+400847.4 Mag 10 PmRA -14.00
PmDE -3.0
 
 
20520+4009 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 205207.11+400853.3 Mag 10.2 PmRA 6.00
PmDE -6.0 Calc delta mag 0.2 Calc coord yes