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Doubles in session


Current system
21555+5232
STT 456 AD


Nearby doubles
10' : 21561+5224
ES 1107

17' : 21542+5220
SKF2554

19' : 21559+5212
ES 1106AB

22' : 21578+5234
ARN 98

27' : 21564+5207
AMS 9

30' : 21584+5245
ES 1015AB

30' : 21588+5227
HU 773

31' : 21583+5215
AMS 8

39' : 21596+5223
HU 775AB

47' : 22005+5223
TDT3287

47' : 21578+5314
KPP2191

48' : 22001+5208
COU2657

48' : 21543+5145
KPP4256AB

61' : 21536+5132
ES 828

61' : 21568+5132
TDT3253

78' : 21481+5156
TDT3161

79' : 21502+5131
COU2655

80' : 22006+5337
RAO 469

82' : 22045+5239
HU 776

84' : 22044+5254
TDT3323

85' : 21486+5136
HLD 48

85' : 21501+5340
ES 1014

85' : 22037+5313
HDS3131

85' : 21550+5356
SKF2398

85' : 21495+5127
GII 19

85' : 21472+5310
GIC 171



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Binocular doubles
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.

21555+5232 STT 456 AD

 
 
21h 55m 31.59s +52° 31' 40.7" P.A. 185.00 sep 25.2 mag 8.25,10.96 Sp F2V dist. 411.52 pc (1342.38 l.y.)
 
 
Coord 2000 21555+5232 Discov num STT 456 Comp AD Coord arcsec 2000 21 55 31.59 +52 31 40.7
Date first 1881 Date last 2016 Obs 16
Pa first 186 Pa last 185.3 P.A. Now (θ) 185.3°
Sep first 25.2 Sep last 25.153 Sep. Now (ρ) 25.153"
Mag pri 8.25 Mag sec 10.96 delta mag (ΔM) 2.71 Spectral class F2V (yellow-white)
Pri motion ra -005 Sec motion ra -001
Pri motion dec -009 Sec motion dec -002
Notes U Z (Proper motion indicates non-physical, Parallax indicates components are physical)
rPM=0.783
This double is not physical.
 
 
21555+5232 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 21 55 32 +52 31 41 STT 456 AB 2019 79 38 1.6 8.25 8.93 0.68
Show 21 55 32 +52 31 41 STT 456 AC 2016 17 291 26.1 8.25 10.55 2.30
Show 21 55 32 +52 31 41 STT 456 AD 2016 16 185 25.2 8.25 10.96 2.71 <===
Show HD 208546 21 55 32 +52 31 41 ABH 154 AB,E 2003 5 18 54.6 7.79 12.24 4.45
Show 21 55 32 +52 31 41 ABH 154 AB,F 2003 3 104 57.5 7.79 12.42 4.63
Show 21 55 32 +52 31 41 ABH 154 AB,G 2010 11 107 111.6 7.79 9.52 1.73
Show 21 55 32 +52 31 41 ABH 154 AB,H 2003 3 183 59.1 7.79 13.73 5.94
Show 21 55 32 +52 31 41 ABH 154 AB,I 2003 3 256 101.0 7.79 13.53 5.74
Show 21 55 32 +52 31 41 ABH 154 AB,J 2003 3 46 80.4 7.79 13.68 5.89
Show 21 55 32 +52 31 41 ABH 154 AB,K 2000 2 124 72.3 7.79 14.30 6.51
Show 21 55 32 +52 31 41 ABH 154 AB,L 2003 3 118 75.7 7.79 13.90 6.11
Show 21 55 29 +52 31 50 STT 456 CD 2015 27 148 40.8 10.55 10.96 0.41
12-fold system
13 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Cygnus HIP 108227 Tycho2 3968-01329-1 Gaia DR2 1981338477465784960
HD 208546 BD BD+51 3187 Distance 411.52 Distance ly 1342.38