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Doubles in session


Current system
21069+3845
STF 2758 BC


Nearby doubles
6' : 21070+3839
ES 2059

6' : 21072+3841
MLB1018

7' : 21074+3841
MLB1019

9' : 21071+3852
MLB 888

11' : 21074+3853
MLB 890

12' : 21068+3834
TDT2758

14' : 21073+3857
MLB 889

15' : 21075+3831
SEI1408

16' : 21078+3834
BRT2233

21' : 21071+3905
ALI 960

22' : 21052+3838
ALI 958

26' : 21091+3844
S 779

34' : 21083+3816
SEI1411

34' : 21091+3822
SEI1417

35' : 21097+3856
COU1967

36' : 21047+3908
SEI1393

36' : 21040+3854
TDT2723

36' : 21094+3905
GUR 1

37' : 21051+3914
ES 1987

39' : 21095+3822
GUR 2

39' : 21037+3842
SEI1384

39' : 21102+3844
SEI1426

40' : 21037+3857
TDT2720

42' : 21105+3851
SEI1429

46' : 21035+3825
SEI1381

46' : 21076+3757
ES 2060AB



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Neglected List II
Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

21069+3845 STF 2758 BC

 
 
21h 06m 55.09s +38° 44' 31.6" P.A. 221.00 sep 827.6 mag 6.10,10.03 Sp K7V dist. 3.5 pc (11.42 l.y.)
 
 
Coord 2000 21069+3845 Discov num STF2758 Comp BC Coord arcsec 2000 21 06 55.09 +38 44 31.6
Date first 1879 Date last 2016 Obs 7
Pa first 176 Pa last 221.3 P.A. Now (θ) 221.3°
Sep first 192.9 Sep last 827.604 Sep. Now (ρ) 827.604"
Mag pri 6.10 Mag sec 10.03 delta mag (ΔM) 3.93 Spectral class K7V (yellow-orange)
Pri motion ra +411 Sec motion ra +001
Pri motion dec +314 Sec motion dec +001
Notes N L P (See Notes, Linear solution, 100-year proper motion)
rPM=0.997
This double is not physical.
 
 
21069+3845 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 61 Cyg 70919 21 06 54 +38 44 58 STF 2758 AB 2022 1809 154 32.0 5.35 6.10 0.75 Y
Show 21 06 54 +38 44 58 STF 2758 AC 2016 7 219 839.8 5.35 10.23 4.88
Show 70919 21 06 54 +38 44 58 STF 2758 AD 2016 5 250 748.0 5.35 10.45 5.10
Show 70919 21 06 54 +38 44 58 STF 2758 AE 2016 13 267 340.8 5.35 9.63 4.28
Show 21 06 54 +38 44 58 STF 2758 AF 2016 11 240 371.2 5.35 11.30 5.95
Show 21 06 54 +38 44 58 STF 2758 AG 2016 14 236 260.4 5.35 11.30 5.95
Show 21 06 54 +38 44 58 STF 2758 AH 2021 34 263 134.0 5.35 9.97 4.62
Show 21 06 54 +38 44 58 SMR 1 AI 2021 16 236 49.3 5.35 10.74 5.39
Show 21 06 54 +38 44 58 HZE 4 AJ 2015 4 241 17.5 5.35
Show 21 06 54 +38 44 58 HZE 4 AK 2006 1 83 7.8 5.35
Show 21 06 54 +38 44 58 SMR 40 AO 2021 12 275 176.6 5.35 12.65 7.30
Show 21 06 54 +38 44 58 SMR 40 AP 2021 11 284 166.5 5.35 12.84 7.49
Show 21 06 54 +38 44 58 SMR 40 AQ 2021 7 295 76.1 5.35 13.19 7.84
Show 21 06 55 +38 44 32 STF 2758 BC 2016 7 221 827.6 6.10 10.03 3.93 <===
Show 21 06 55 +38 44 32 HZE 4 BL 2006 1 145 9.9 6.10
Show 21 06 55 +38 44 32 FYM 106 BM 2016 4 238 100.7 6.10 14.30 8.20
Show 21 06 55 +38 44 32 FYM 106 BN 2016 4 152 48.3 6.05 14.40 8.35
Show 21 06 55 +38 44 32 TNN 15 BR 2005 1 77 11.5 6.10
18-fold system
18 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Var name NSV13546 Cyg Constellation Cygnus HIP 104217 Tycho2 3168-02798-1
Gaia DR2 1872046471896790016 HD 201092 HR 8086 ADS 14636
GL Gl 820B BD BD+38 4344 Flamsteed 61 Cygni Flamsteed name 61 Cyg
Distance 3.5 Distance ly 11.42