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Doubles in session


Current system
20307+4137
CAN 1 Aa,Ab


Nearby doubles
6' : 20312+4137
J 1196

8' : 20312+4132
CAN 3AB

10' : 20314+4131
CAN 31AB

12' : 20298+4143
GRV 344

13' : 20317+4143
HJ 1530

14' : 20300+4149
J 130

15' : 20301+4124
CAN 14AB

15' : 20315+4148
BRT2265

16' : 20318+4128
CAN 34AB

16' : 20316+4149
TDT2338

18' : 20313+4121
MZA 39AB

21' : 20322+4127
MZA 24AB

22' : 20324+4130
CAN 37AB

22' : 20323+4126
CAN 36AB

22' : 20325+4129
CAN 39AB

23' : 20318+4118
CAN 4AB

23' : 20325+4126
CAN 38AB

24' : 20318+4117
CAN 33AB

24' : 20305+4113
CAN 27AB

25' : 20323+4152
BU 434

25' : 20326+4125
CAN 40AB

26' : 20316+4113
ES 1679AB

27' : 20328+4126
CAN 41AB

27' : 20311+4203
CAN 25AB

27' : 20324+4118
HER 3AB

28' : 20310+4110
CAN 19AB



Selections
Full WDS
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.

20307+4137 CAN 1 Aa,Ab

 
 
20h 30m 39.82s +41° 36' 50.7" P.A. 91.00 sep 0.3 mag 13.00,15.80 Sp O6V
 
 
Coord 2000 20307+4137 Discov num CAN   1 Comp Aa,Ab Coord arcsec 2000 20 30 39.82 +41 36 50.7
Date first 2006 Date last 2008 Obs 3
Pa first 92 Pa last 90.9 P.A. Now (θ) 90.9°
Sep first 0.3 Sep last 0.32 Sep. Now (ρ) 0.32"
Mag pri 13.00 Mag sec 15.80 delta mag (ΔM) 2.8 Spectral class O6V (blue)
Pri motion ra -003 Sec motion ra
Pri motion dec -002 Sec motion dec
Notes N V (See Notes, Proper motion indicates physical)
This double is physical.
 
 
20307+4137 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 20 30 40 +41 36 51 CAN 1 Aa,Ab 2008 3 91 0.3 13.00 15.80 2.80 <===
Show 20 30 40 +41 36 51 CAN 28 AB 2008 2 336 2.6 8.30 15.60 7.30
Show 20 30 40 +41 36 51 CAN 28 AC 2008 2 342 6.0 8.30 16.00 7.70
Show 20 30 40 +41 36 51 CAN 28 AD 2008 1 168 7.0 8.30 17.20 8.90
Show 20 30 40 +41 36 51 CAN 28 AE 2008 1 337 7.8 8.30 17.60 9.30
Show 20 30 40 +41 36 51 CAN 28 AF 2008 1 20 8.2 8.30 16.70 8.40
Show 20 30 40 +41 36 51 CAN 28 AG 2008 2 158 9.0 8.30 14.30 6.00
Show 20 30 40 +41 36 51 CAN 28 AH 2008 2 284 9.2 8.30 15.40 7.10
Show 20 30 40 +41 36 51 CAN 28 AI 2008 3 44 10.1 8.30 15.10 6.80
Show 20 30 40 +41 36 51 CAN 28 AJ 2008 1 118 10.1 8.30 15.90 7.60
Show 20 30 40 +41 36 51 CAN 28 AK 2008 2 14 10.2 8.30 15.40 7.10
Show 20 30 40 +41 36 51 CAN 28 AL 2008 1 104 10.3 8.30 17.20 8.90
Show 20 30 40 +41 36 51 CAN 28 AM 2008 1 77 12.0 8.30 16.80 8.50
Show 20 30 40 +41 36 51 CAN 28 AN 2008 2 2 13.4 9.10 15.70 6.60
Show 20 30 40 +41 36 51 CAN 28 AO 2008 2 281 13.8 9.10 16.70 7.60
16-fold system
15 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Cygnus