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Current system
21345+4725
ES 1172 AB


Nearby doubles
5' : 21342+4721
BKO 160AB

7' : 21350+4723
ES 1173

9' : 21341+4718
HDS3072

32' : 21346+4654
TDT3038

32' : 21372+4739
BEM 39AB

42' : 21304+4717
ES 516

42' : 21311+4701
CLZ 80

43' : 21306+4742
ES 824

43' : 21342+4808
ES 519

45' : 21303+4740
COU2440

46' : 21383+4702
TDT3071

46' : 21308+4752
A 769

47' : 21338+4811
SWN 6

47' : 21386+4747
COU2311

48' : 21346+4813
RAO 462AB

49' : 21297+4732
A 767

52' : 21332+4816
POP 55

53' : 21361+4814
ES 1174

53' : 21352+4634
LDS4898

53' : 21346+4817
SWN 8

54' : 21291+4727
TDS1130

55' : 21316+4811
SWN 5

55' : 21396+4712
HJ 1676

56' : 21343+4630
ES 518

58' : 21323+4821
DJU 7

60' : 21315+4817
A 771AB



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Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

21345+4725 ES 1172 AB

 
 
21h 34m 25.29s +47° 25' 12.7" P.A. 104.00 sep 6.4 mag 9.94,10.40 Sp B8III
 
 
Coord 2000 21345+4725 Discov num ES 1172 Comp AB Coord arcsec 2000 21 34 25.29 +47 25 12.7
Date first 1912 Date last 2018 Obs 13
Pa first 106 Pa last 103.5 P.A. Now (θ) 103.5°
Sep first 6.6 Sep last 6.42 Sep. Now (ρ) 6.42"
Mag pri 9.94 Mag sec 10.40 delta mag (ΔM) 0.46 Spectral class B8III (blue-white)
Pri motion ra -001 Sec motion ra
Pri motion dec +001 Sec motion dec
Notes U (Proper motion indicates non-physical)
This double is not physical.
 
 
21345+4725 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 21 34 25 +47 25 13 ES 1172 AB 2018 13 104 6.4 9.94 10.40 0.46 <===
Show 21 34 25 +47 25 13 ES 1172 AC 2015 13 205 16.3 9.94 10.70 0.76
Show 21 34 25 +47 25 13 ABH 146 AD 2015 9 170 30.6 9.94 14.30 4.36
Show 21 34 25 +47 25 13 ABH 146 AE 2015 9 33 32.6 9.94 14.27 4.33
Show 21 34 25 +47 25 13 ABH 146 AF 2015 9 58 49.7 9.94 13.60 3.66
Show 21 34 25 +47 25 13 ABH 146 AG 2015 5 104 48.6 9.94 14.70 4.76
Show 21 34 25 +47 25 13 ABH 146 AH 2015 7 247 43.1 9.94 15.64 5.70
Show 21 34 25 +47 25 13 ABH 146 AI 2015 8 92 119.9 9.94 12.79 2.85
Show 21 34 25 +47 25 13 ABH 146 AJ 2015 8 250 107.2 9.94 12.00 2.06
Show 21 34 25 +47 25 13 ABH 146 AK 2015 8 246 112.4 9.94 14.60 4.66
Show 21 34 25 +47 25 13 ABH 146 AL 2015 8 232 102.7 9.94 14.33 4.39
12-fold system
12 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Cygnus Tycho2 3595-01397-1 Gaia DR2 1978254381710303488