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Doubles in session


Current system
21406+5419
ES 35 AC


Nearby doubles
4' : 21406+5423
BKO 899

4' : 21406+5416
BKO 900

13' : 21400+5407
GIC 169

18' : 21398+5403
TDT3093

20' : 21405+5401
RAO 464

21' : 21395+5438
ES 1008

32' : 21376+5403
HDS3078

35' : 21429+5448
STI2587

42' : 21451+5432
TDT3135

42' : 21452+5431
HDS3098

43' : 21403+5338
TDT3099

43' : 21436+5346
BKO 901

43' : 21391+5500
STI2580

43' : 21435+5345
DAM 233

44' : 21443+5350
DAM 234

46' : 21372+5346
MLR 609

46' : 21438+5343
BKO 902

47' : 21366+5449
A 1699

47' : 21439+5344
HJ 3058

48' : 21441+5342
BKO 903

49' : 21455+5356
TDT3140

49' : 21443+5342
BKO 904

52' : 21465+5411
TDT3152

53' : 21378+5333
TDT3067

57' : 21358+5343
TDT3048

60' : 21421+5322
A 1894



Selections
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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.

21406+5419 ES 35 AC

 
 
21h 40m 39.10s +54° 19' 29.0" P.A. 28.00 sep 18.2 mag 8.19,10.79 Sp M8e dist. 249.38 pc (813.48 l.y.)
 
 
Coord 2000 21406+5419 Discov num ES   35 Comp AC Coord arcsec 2000 21 40 39.10 +54 19 29.0
Date first 1898 Date last 2014 Obs 18
Pa first 29 Pa last 27.7 P.A. Now (θ) 27.7°
Sep first 19.1 Sep last 18.203 Sep. Now (ρ) 18.203"
Mag pri 8.19 Mag sec 10.79 delta mag (ΔM) 2.6 Spectral class M8e (red)
Pri motion ra -010 Sec motion ra -010
Pri motion dec -012 Sec motion dec -012
Notes N (See Notes)
Nature of this double is uncertain.
 
 
21406+5419 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show RU Cyg 33654 21 40 39 +54 19 29 ES 35 AB 2014 11 219 8.6 8.19 12.40 4.21
Show 33654 21 40 39 +54 19 29 ES 35 AC 2014 18 28 18.2 8.19 10.79 2.60 <===
Show 33654 21 40 39 +54 19 29 ABH 149 AD 2014 5 304 11.6 8.19 14.60 6.41
Show 33654 21 40 39 +54 19 29 ABH 149 AE 2014 5 252 77.0 8.19 12.41 4.22
Show 33654 21 40 39 +54 19 29 ABH 149 AF 2014 6 348 64.5 8.19 14.40 6.21
Show 33654 21 40 39 +54 19 29 ABH 149 AG 2014 6 303 89.9 8.19 14.90 6.71
Show 33654 21 40 39 +54 19 29 ABH 149 AH 2014 6 294 87.0 8.19 14.00 5.81
Show 33654 21 40 39 +54 19 29 ABH 149 AI 2014 5 280 83.8 8.80 14.58 5.78
Show 33654 21 40 39 +54 19 29 ABH 149 AJ 2014 6 241 127.9 8.80 12.69 3.89
Show 33654 21 40 39 +54 19 29 ABH 149 AK 2014 6 228 100.6 8.80 14.98 6.18
11-fold system
11 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Var name RU Cyg Constellation Cygnus SAO 33654 HIP 107036
Tycho2 3967-00080-1 Gaia DR2 2174336062725810048 HD 206483 BD BD+53 2684
Distance 249.38 Distance ly 813.48