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Current system
20561+3649
SEI 1321


Nearby doubles
6' : 20560+3643
SEI1320

15' : 20563+3634
SEI1324

18' : 20575+3643
SEI1329

21' : 20544+3648
SEI1306

22' : 20554+3708
SEI1314

22' : 20573+3632
SEI1328

23' : 20544+3658
TDT2623

23' : 20579+3641
SEI1335

24' : 20547+3704
STT 419

26' : 20549+3709
COU2295

27' : 20544+3704
SEI1305

27' : 20546+3709
SEI1307

30' : 20577+3711
SEI1331

31' : 20582+3706
TOB 204AB

31' : 20538+3702
SEI1300

31' : 20547+3714
TDT2625

32' : 20535+3645
SEI1296

32' : 20544+3625
POP 157

33' : 20587+3657
COU2296

33' : 20577+3623
SEI1330

33' : 20562+3616
TOB 202

33' : 20587+3644
ES 251

33' : 20575+3717
DAM 221

34' : 20580+3713
J 1076

35' : 20562+3614
SEI1323

36' : 20533+3639
SEI1293



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

20561+3649 SEI 1321

 
 
20h 56m 06.60s +36° 48' 38.2" P.A. 96.00 sep 22.7 mag 11.15,12.81
 
 
Coord 2000 20561+3649 Discov num SEI1321 Comp Coord arcsec 2000 20 56 06.60 +36 48 38.2
Date first 1896 Date last 2015 Obs 9
Pa first 96 Pa last 95.5 P.A. Now (θ) 95.5°
Sep first 22.1 Sep last 22.729 Sep. Now (ρ) 22.729"
Mag pri 11.15 Mag sec 12.81 delta mag (ΔM) 1.66 Spectral class
Pri motion ra -011 Sec motion ra -004
Pri motion dec -004 Sec motion dec -005
Notes
rPM=0.604
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Cygnus Tycho2 2700-00184-1 Gaia DR2 1871550763958639744
 
 
WDS 20561+3649 SEI 1321 : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
Sei1908 Pa - Scheiner, J. 1908POPot..59.....S
Sei1908 +Po Pub. Obs. Potsdam 20, #59, 1908
Sei1913A Pa - Scheiner, J. 1913QB811.B8.......
Sei1913A cited by Burnham (Carnegie Inst. Wash. #168, 1913)
Sei1932A Pa - Scheiner, J. 1932QB821.A43......
Sei1932A cited in ADS (Aitken Double Star Cat.), 1932
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20561+3649 SEI1321 1998 3 95 22.7 11.00 11.00 D 205606.60+364838.2
20561+3649 SEI1321 2002 4 96 22.6 11.00 11.00 D 205606.60+364838.2
20561+3649 SEI1321 2010 5 96 22.7 11.15 12.81 205606.60+364838.2
20561+3649 SEI1321 2015 6 96 22.7 11.15 12.81 205606.60+364838.2

If you need more information about this double, apply for a data request form to the WDS.

 
 
WDS 20561+3649 SEI 1321 : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 20561+3649 SEI 1321 : MEASURES
 
 
No records found.

 
 
WDS 20561+3649 : VIRTUAL EYEPIECE
 
 

20561+3649 SEI1321A mag 11.15 20561+3649 SEI1321B sep 18.2 P.A. 96.90 mag 12.81 virtual eyepiece
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Pass over with the mouse cursor to display the catalog designation.
Radius:
Components only
 
 
WDS 20561+3649 : ALADIN DSS IMAGE @ 20h 56m 06.60s +36° 48' 38.2"
 
 
 
 
WDS 20561+3649 SEI 1321 : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

20561+3649 SEI1321 distance=0' 20560+3643 SEI1320 distance=6' 20563+3634 SEI1324 distance=15' 20575+3643 SEI1329 distance=18' 20544+3648 SEI1306 distance=21' 20554+3708 SEI1314 distance=22' 20573+3632 SEI1328 distance=22' 20544+3658 TDT2623 distance=23' 20579+3641 SEI1335 distance=23' 20547+3704 STT 419 distance=24' 20549+3709 COU2295 distance=26' 20544+3704 SEI1305 distance=27' 20546+3709 SEI1307 distance=27' 20577+3711 SEI1331 distance=30' 20582+3706 TOB 204AB distance=31' 20538+3702 SEI1300 distance=31' 20547+3714 TDT2625 distance=31' 20582+3706 SEI1339CD distance=31' 20535+3645 SEI1296 distance=32' 20544+3625 POP 157 distance=32' 20587+3657 COU2296 distance=33' 20577+3623 SEI1330 distance=33' 20562+3616 TOB 202 distance=33' 20587+3644 ES 251 distance=33' 20575+3717 DAM 221 distance=33' 20580+3713 J 1076 distance=34' 20562+3614 SEI1323 distance=35' 20533+3639 SEI1293 distance=36' 20582+3715 DAM 223 distance=37' 20590+3655 SEI1347 distance=37' 20538+3622 SEI1302 distance=39' 20594+3651 TDT2678 distance=40' 20528+3646 COU2221 distance=40' 20594+3637 SEI1352 distance=42' 20595+3646 SEI1354 distance=42' 20565+3731 TDT2648 distance=43' 20561+3731 SEI1322 distance=43' 20526+3655 A 1435 distance=43' 20538+3723 SEI1299AB distance=45' 20538+3723 SEI1301AC distance=45' 20596+3703 HJ 1601 distance=45' 20584+3612 POP 82 distance=46' 20594+3626 HU 764 distance=46' 20521+3645 ES 250 distance=48' 20592+3718 ALI 434 distance=48' 20587+3725 SEI1343 distance=48' 21000+3655 SEI1360AB distance=48' 21000+3655 TOB 208AC distance=48' 20521+3657 SEI1285 distance=49' 20590+3723 SEI1346 distance=49' 21002+3658 HO 147AB distance=51' grafico limitrofi
Click on the map to see the double of your interest.
Pass over with the mouse cursor to display the catalog designation.
Show name coord_2000 discov# comp pa sep dist(')
Show 20561+3649 SEI1321 96 22.7
Show 20560+3643 SEI1320 64 13.9 6
Show 20563+3634 SEI1324 92 19.3 15
Show 20575+3643 SEI1329 30 24.7 18
Show 20544+3648 SEI1306 306 17.1 21
Show 20554+3708 SEI1314 178 18.4 22
Show 20573+3632 SEI1328 234 7.9 22
Show 20544+3658 TDT2623 36 1.0 23
Show 20579+3641 SEI1335 28 18.2 23
Show 20547+3704 STT 419 24 1.7 24
Show 20549+3709 COU2295 180 0.4 26
Show 20544+3704 SEI1305 148 23.0 27
Show 20546+3709 SEI1307 307 3.7 27
Show 20577+3711 SEI1331 49 26.6 30
Show 20582+3706 TOB 204 AB 91 9.9 31
Show 20538+3702 SEI1300 120 1.8 31
Show 20547+3714 TDT2625 255 0.5 31
Show 20582+3706 SEI1339 CD 259 12.4 31
Show 20535+3645 SEI1296 278 10.5 32
Show 20544+3625 POP 157 224 3.0 32
Show 20587+3657 COU2296 103 1.0 33
Show 20577+3623 SEI1330 51 14.2 33
Show 20562+3616 TOB 202 179 18.1 33
Show 20587+3644 ES 251 141 6.6 33
Show 20575+3717 DAM 221 59 5.9 33
Show 20580+3713 J 1076 78 1.7 34
Show 20562+3614 SEI1323 169 21.2 35
Show 20533+3639 SEI1293 53 14.2 36
Show 20582+3715 DAM 223 35 4.8 37
Show 20590+3655 SEI1347 125 18.6 37
Show 20538+3622 SEI1302 47 25.0 39
Show 20594+3651 TDT2678 246 0.5 40
Show 20528+3646 COU2221 30 0.3 40
Show 20594+3637 SEI1352 354 14.6 42
Show 20595+3646 SEI1354 325 26.4 42
Show 20565+3731 TDT2648 234 0.7 43
Show 20561+3731 SEI1322 165 1.5 43
Show 20526+3655 A 1435 6 0.5 43
Show 20538+3723 SEI1299 AB 356 9.0 45
Show 20538+3723 SEI1301 AC 290 26.3 45
Show 20596+3703 HJ 1601 141 6.5 45
Show 20584+3612 POP 82 25 5.5 46
Show 20594+3626 HU 764 190 0.4 46
Show 20521+3645 ES 250 88 4.4 48
Show 20592+3718 ALI 434 292 44.7 48
Show 20587+3725 SEI1343 315 37.5 48
Show 21000+3655 SEI1360 AB 45 22.2 48
Show 21000+3655 TOB 208 AC 232 31.7 48
Show 20521+3657 SEI1285 301 27.6 49
Show 20590+3723 SEI1346 329 6.5 49
Show 21002+3658 HO 147 AB 351 7.8 51

 
 
WDS 20561+3649 : COMPONENTS
 
 
  A
B pa=96.9°
sep=18.24"
 
 
20561+3649 A
 
 
Componente originario normalizzato AB Coord arcsec 2000 205606.60+364838.2 Mag 11.15 PmRA -11.00
PmDE -4.0 Tycho2 2700-00184-1
Tycho2
Tycho2 2700-00184-1 Pflag RAmdeg 314.02752336 DEmdeg 36.81062390
PmRA -13.6 PmDE -4.7 E RAmdeg 36 E DEmdeg 36
E pmRA 3.1 E pmDE 2.7 EpRAm 1985.58 EpDEm 1985.42
Num 4 Q RAmdeg 0.8 Q DEmdeg 0.7 Q pmRA 0.7
Q pmDE 0.7 BTmag 13.508 E BTmag 0.335 VTmag 11.183
E VTmag 0.074 Prox 999 TYC HIP
CCDM RAdeg 314.02754444 DEdeg 36.81062389 EpRA 1990 1.72
EpDE 1990 1.70 E RAdeg 64.0 E DEdeg 59.7 Posflg
Corr 0.2
CCDM
Ccdm 20561+3649 RComp Comp A Note1
Note2 Discov num DRAs 0.62 DDEs -21.6
R dRAs 65 Year Theta Rho
Obs 2 Vmag 11.0 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS M ADS BDS N IDS IDS 20522N3626A
HIC
 
 
20561+3649 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 205608.11+364836.0 Mag 12.81 PmRA -4.00
PmDE -5.0 Calc delta mag 1.66 Calc coord yes
CCDM
Ccdm 20561+3649 RComp Comp B Note1
Note2 Discov num SEI1321 DRAs 2.49 DDEs -24.0
R dRAs 65 Year 1896 Theta 096 Rho 22.2
Obs 1 Vmag 11.0 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS M ADS BDS N IDS IDS 20522N3626B
HIC