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Current system
20544+3648
SEI 1306


Nearby doubles
11' : 20544+3658
TDT2623

12' : 20535+3645
SEI1296

16' : 20538+3702
SEI1300

17' : 20544+3704
SEI1305

17' : 20533+3639
SEI1293

18' : 20547+3704
STT 419

20' : 20560+3643
SEI1320

20' : 20528+3646
COU2221

21' : 20561+3649
SEI1321

22' : 20546+3709
SEI1307

23' : 20549+3709
COU2295

23' : 20544+3625
POP 157

24' : 20526+3655
A 1435

24' : 20554+3708
SEI1314

27' : 20563+3634
SEI1324

27' : 20547+3714
TDT2625

27' : 20538+3622
SEI1302

28' : 20521+3645
ES 250

30' : 20521+3657
SEI1285

37' : 20538+3723
SEI1299AB

38' : 20575+3643
SEI1329

38' : 20573+3632
SEI1328

39' : 20562+3616
TOB 202

39' : 20512+3650
SEI1280

41' : 20562+3614
SEI1323

41' : 20531+3610
SEI1291



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

20544+3648 SEI 1306

 
 
20h 54m 26.43s +36° 47' 35.1" P.A. 306.00 sep 17.1 mag 11.32,12.20
 
 
Coord 2000 20544+3648 Discov num SEI1306 Comp Coord arcsec 2000 20 54 26.43 +36 47 35.1
Date first 1896 Date last 2015 Obs 13
Pa first 309 Pa last 305.5 P.A. Now (θ) 305.5°
Sep first 17.6 Sep last 17.059 Sep. Now (ρ) 17.059"
Mag pri 11.32 Mag sec 12.20 delta mag (ΔM) 0.88 Spectral class
Pri motion ra -002 Sec motion ra -007
Pri motion dec -010 Sec motion dec -013
Notes W
rPM=0.395
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Cygnus Tycho2 2700-04013-1 Gaia DR2 1870099198142072832
 
 
WDS 20544+3648 SEI 1306 : 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
20544+3648 SEI1306 1998 6 306 17.0 11.32 12.20 D 205426.43+364735.1
20544+3648 SEI1306 2007 7 306 17.0 11.32 12.20 D 205426.43+364735.1
20544+3648 SEI1306 2010 9 306 17.0 11.32 12.20 205426.43+364735.1
20544+3648 SEI1306 2015 10 306 17.1 11.32 12.20 205426.43+364735.1

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

 
 
WDS 20544+3648 SEI 1306 : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 20544+3648 SEI 1306 : MEASURES
 
 
No records found.

 
 
WDS 20544+3648 : VIRTUAL EYEPIECE
 
 

20544+3648 SEI1306A mag 11.32 20544+3648 SEI1306B sep 14.9 P.A. 311.70 mag 12.2 virtual eyepiece
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Pass over with the mouse cursor to display the catalog designation.
Radius:
Components only
 
 
WDS 20544+3648 : ALADIN DSS IMAGE @ 20h 54m 26.43s +36° 47' 35.1"
 
 
 
 
WDS 20544+3648 SEI 1306 : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

20544+3648 SEI1306 distance=1' 20544+3658 TDT2623 distance=11' 20535+3645 SEI1296 distance=12' 20538+3702 SEI1300 distance=16' 20544+3704 SEI1305 distance=17' 20533+3639 SEI1293 distance=17' 20547+3704 STT 419 distance=18' 20560+3643 SEI1320 distance=20' 20528+3646 COU2221 distance=20' 20561+3649 SEI1321 distance=21' 20546+3709 SEI1307 distance=22' 20549+3709 COU2295 distance=23' 20544+3625 POP 157 distance=23' 20526+3655 A 1435 distance=24' 20554+3708 SEI1314 distance=24' 20563+3634 SEI1324 distance=27' 20547+3714 TDT2625 distance=27' 20538+3622 SEI1302 distance=27' 20521+3645 ES 250 distance=28' 20521+3657 SEI1285 distance=30' 20538+3723 SEI1299AB distance=37' 20538+3723 SEI1301AC distance=37' 20575+3643 SEI1329 distance=38' 20573+3632 SEI1328 distance=38' 20562+3616 TOB 202 distance=39' 20512+3650 SEI1280 distance=39' 20562+3614 SEI1323 distance=41' 20531+3610 SEI1291 distance=41' 20579+3641 SEI1335 distance=43' 20536+3605 SEI1297 distance=44' 20508+3641 SEI1276 distance=44' 20524+3724 SEI1287 distance=45' 20533+3731 TDT2606 distance=45' 20527+3728 SEI1288 distance=46' 20577+3711 SEI1331 distance=47' 20515+3717 SEI1282 distance=47' 20577+3623 SEI1330 distance=47' 20575+3717 DAM 221 distance=47' 20561+3731 SEI1322 distance=48' 20582+3706 TOB 204AB distance=49' 20582+3706 SEI1339CD distance=49' 20505+3635 SEI1271AB distance=50' 20505+3635 SEI1272AC distance=50' 20565+3731 TDT2648 distance=50' 20580+3713 J 1076 distance=50' 20528+3602 TDT2598 distance=51' 20503+3645 TDT2568 distance=51' 20510+3717 SEI1277 distance=52' 20502+3642 SEI1270 distance=52' 20587+3657 COU2296 distance=53' 20582+3715 DAM 223 distance=53' 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 20544+3648 SEI1306 306 17.1 1
Show 20544+3658 TDT2623 36 1.0 11
Show 20535+3645 SEI1296 278 10.5 12
Show 20538+3702 SEI1300 120 1.8 16
Show 20544+3704 SEI1305 148 23.0 17
Show 20533+3639 SEI1293 53 14.2 17
Show 20547+3704 STT 419 24 1.7 18
Show 20560+3643 SEI1320 64 13.9 20
Show 20528+3646 COU2221 30 0.3 20
Show 20561+3649 SEI1321 96 22.7 21
Show 20546+3709 SEI1307 307 3.7 22
Show 20549+3709 COU2295 180 0.4 23
Show 20544+3625 POP 157 224 3.0 23
Show 20526+3655 A 1435 6 0.5 24
Show 20554+3708 SEI1314 178 18.4 24
Show 20563+3634 SEI1324 92 19.3 27
Show 20547+3714 TDT2625 255 0.5 27
Show 20538+3622 SEI1302 47 25.0 27
Show 20521+3645 ES 250 88 4.4 28
Show 20521+3657 SEI1285 301 27.6 30
Show 20538+3723 SEI1299 AB 356 9.0 37
Show 20538+3723 SEI1301 AC 290 26.3 37
Show 20575+3643 SEI1329 30 24.7 38
Show 20573+3632 SEI1328 234 7.9 38
Show 20562+3616 TOB 202 179 18.1 39
Show 20512+3650 SEI1280 5 3.8 39
Show 20562+3614 SEI1323 169 21.2 41
Show 20531+3610 SEI1291 103 9.0 41
Show 20579+3641 SEI1335 28 18.2 43
Show 20536+3605 SEI1297 270 18.6 44
Show 20508+3641 SEI1276 266 22.6 44
Show 20524+3724 SEI1287 353 6.7 45
Show 20533+3731 TDT2606 65 4.4 45
Show 20527+3728 SEI1288 259 24.2 46
Show 20577+3711 SEI1331 49 26.6 47
Show 20515+3717 SEI1282 270 27.4 47
Show 20577+3623 SEI1330 51 14.2 47
Show 20575+3717 DAM 221 59 5.9 47
Show 20561+3731 SEI1322 165 1.5 48
Show 20582+3706 TOB 204 AB 91 9.9 49
Show 20582+3706 SEI1339 CD 259 12.4 49
Show 20505+3635 SEI1271 AB 27 14.9 50
Show 20505+3635 SEI1272 AC 185 20.4 50
Show 20565+3731 TDT2648 234 0.7 50
Show 20580+3713 J 1076 78 1.7 50
Show 20528+3602 TDT2598 227 0.5 51
Show 20503+3645 TDT2568 174 2.4 51
Show 20510+3717 SEI1277 32 8.1 52
Show 20502+3642 SEI1270 211 23.1 52
Show 20587+3657 COU2296 103 1.0 53
Show 20582+3715 DAM 223 35 4.8 53

 
 
WDS 20544+3648 : COMPONENTS
 
 
  A
B pa=311.7°
sep=14.89"
 
 
20544+3648 A
 
 
Componente originario normalizzato AB Coord arcsec 2000 205426.43+364735.1 Mag 11.32 PmRA -2.00
PmDE -10.0 Tycho2 2700-04013-1
Tycho2
Tycho2 2700-04013-1 Pflag RAmdeg 313.61014000 DEmdeg 36.79310174
PmRA -0.6 PmDE -9.3 E RAmdeg 44 E DEmdeg 43
E pmRA 1.7 E pmDE 1.6 EpRAm 1981.99 EpDEm 1981.62
Num 6 Q RAmdeg 1.1 Q DEmdeg 1.0 Q pmRA 1.1
Q pmDE 1.0 BTmag 11.686 E BTmag 0.066 VTmag 11.320
E VTmag 0.081 Prox 999 TYC HIP
CCDM RAdeg 313.61014250 DEdeg 36.79312389 EpRA 1990 1.71
EpDE 1990 1.69 E RAdeg 46.6 E DEdeg 46.2 Posflg
Corr 0.2
CCDM
Ccdm 20544+3648 RComp Comp A Note1
Note2 Discov num DRAs 2.43 DDEs -24.4
R dRAs 65 Year Theta Rho
Obs 2 Vmag 9.8 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS M ADS BDS N IDS IDS 20505N3625A
HIC
 
 
20544+3648 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 205425.50+364745.0 Mag 12.2 PmRA -7.00
PmDE -13.0 Calc delta mag 0.88 Calc coord yes
CCDM
Ccdm 20544+3648 RComp Comp B Note1
Note2 Discov num SEI1306 DRAs 1.31 DDEs -14.6
R dRAs 65 Year 1896 Theta 308 Rho 17.2
Obs 1 Vmag 10.7 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS M ADS BDS N IDS IDS 20505N3625B
HIC