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Current system
20488+3426
SEI 1256


Nearby doubles
9' : 20493+3430
POP 51

15' : 20486+3424
ES 249

20' : 20498+3442
SEI1264

21' : 20472+3422
BU 677AB

23' : 20502+3441
SEI1269

24' : 20481+3403
LDS1047

24' : 20489+3449
SEI1258

26' : 20490+3451
SEI1259

29' : 20504+3406
GRV 387

32' : 20479+3456
TDT2545

37' : 20489+3503
SEI1257AB

38' : 20466+3452
SEI1246

38' : 20466+3451
SEI1245

43' : 20521+3439
RAO 521

43' : 20462+3358
STT 594AB
Aljanah

46' : 20477+3343
NSN 736

48' : 20465+3504
GRV 379

50' : 20522+3401
TDT2593

53' : 20487+3334
ES 9006

54' : 20503+3337
ES 2378

54' : 20464+3511
COU1810

55' : 20448+3401
GRV 376

56' : 20445+3409
HU 690

59' : 20446+3401
TDT2511

59' : 20447+3357
ES 2311

61' : 20482+3326
ES 2377



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

20488+3426 SEI 1256

 
 
20h 48m 47.96s +34° 26' 07.6" P.A. 279.00 sep 26.3 mag 11.27,13.29
 
 
Coord 2000 20488+3426 Discov num SEI1256 Comp Coord arcsec 2000 20 48 47.96 +34 26 07.6
Date first 1896 Date last 2015 Obs 9
Pa first 278 Pa last 278.5 P.A. Now (θ) 278.5°
Sep first 26.6 Sep last 26.337 Sep. Now (ρ) 26.337"
Mag pri 11.27 Mag sec 13.29 delta mag (ΔM) 2.02 Spectral class
Pri motion ra -002 Sec motion ra +004
Pri motion dec -005 Sec motion dec -001
Notes N (See Notes)
rPM=1.339
This double is not physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Cygnus Tycho2 2695-01350-1 Gaia DR2 1869422693566745088
 
 
WDS 20488+3426 SEI 1256 : NOTES
 
 
discov_num notes refcode
SEI1256 V2247 Cyg. Primary is eclipsing binary of Algol-type, period 1.25486d. Zas2014
 
 
REFERENCES
 
 
refcode metd author reference
Zas2014 - Zasche, P. ...................
Zas2014 private communication, 2014
 
 
DISCOVERER
 
 
idgroup discov author
1 SEI Scheiner, J.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20488+3426 SEI1256 1999 3 279 26.4 10.80 12.60 D 204847.96+342607.6
20488+3426 SEI1256 2002 4 279 26.3 10.80 12.60 D 204847.96+342607.6
20488+3426 SEI1256 2010 5 279 26.4 11.27 13.29 N 204847.96+342607.6
20488+3426 SEI1256 2015 6 279 26.3 11.27 13.29 N 204847.96+342607.6

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

 
 
WDS 20488+3426 SEI 1256 : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 20488+3426 SEI 1256 : MEASURES
 
 
No records found.

 
 
WDS 20488+3426 : VIRTUAL EYEPIECE
 
 

20488+3426 SEI1256A mag 11.27 20488+3426 SEI1256B sep 21.8 P.A. 280.30 mag 13.29 virtual eyepiece
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Pass over with the mouse cursor to display the catalog designation.
Radius:
Components only
 
 
WDS 20488+3426 : ALADIN DSS IMAGE @ 20h 48m 47.96s +34° 26' 07.6"
 
 
 
 
WDS 20488+3426 SEI 1256 : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

20488+3426 SEI1256 distance=0' 20493+3430 POP 51 distance=9' 20486+3424 ES 249 distance=15' 20498+3442 SEI1264 distance=20' 20472+3422 BU 677AB distance=21' 20472+3422 BU 677AC distance=21' 20502+3441 SEI1269 distance=23' 20481+3403 LDS1047 distance=24' 20489+3449 SEI1258 distance=24' 20490+3451 SEI1259 distance=26' 20504+3406 GRV 387 distance=29' 20479+3456 TDT2545 distance=32' 20489+3503 SEI1257AB distance=37' 20466+3452 SEI1246 distance=38' 20466+3451 SEI1245 distance=38' 20521+3439 RAO 521 distance=43' 20462+3358 CHR 100Aa,Ab (Aljanah) distance=43' 20462+3358 STT 594AB (Aljanah) distance=43' 20462+3358 BU 676AC (Aljanah) distance=43' 20462+3358 LEP 96AD (Aljanah) distance=43' 20477+3343 NSN 736 distance=46' 20465+3504 GRV 379 distance=48' 20522+3401 TDT2593 distance=50' 20487+3334 ES 9006 distance=53' 20503+3337 ES 2378 distance=54' 20464+3511 COU1810 distance=54' 20448+3401 GRV 376 distance=55' 20445+3409 HU 690 distance=56' 20446+3401 TDT2511 distance=59' 20447+3357 ES 2311 distance=59' 20482+3326 ES 2377 distance=61' 20442+3404 TDT2507 distance=61' 20538+3431 TDT2611 distance=63' 20522+3513 HO 145 distance=63' 20532+3349 TDT2605 distance=67' 20499+3531 SEI1266 distance=67' 20456+3521 TDT2520 distance=68' 20544+3435 SEI1304 distance=69' 20543+3415 KPP3363AB distance=70' 20501+3534 TDT2567 distance=71' 20519+3327 GYL 26AB distance=71' 20519+3327 WSI 47AC distance=71' 20470+3318 TDT2535 distance=72' 20540+3459 SEI1303 distance=72' 20431+3411 ES 2310 distance=73' 20493+3314 ES 31AB distance=73' 20493+3314 ES 31AC distance=73' 20429+3430 SEI1225 distance=74' 20462+3533 ES 2252AB distance=74' 20462+3533 LMP 18AB,C distance=74' 20462+3533 LMP 18AB,D distance=74' 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 20488+3426 SEI1256 279 26.3
Show 20493+3430 POP 51 347 6.6 9
Show 20486+3424 ES 249 26 7.7 15
Show 20498+3442 SEI1264 39 7.5 20
Show 20472+3422 BU 677 AB 120 10.0 21
Show 20472+3422 BU 677 AC 211 16.8 21
Show 20502+3441 SEI1269 148 7.9 23
Show 20481+3403 LDS1047 7 110.2 24
Show 20489+3449 SEI1258 351 25.1 24
Show 20490+3451 SEI1259 88 15.5 26
Show 20504+3406 GRV 387 254 26.4 29
Show 20479+3456 TDT2545 195 2.5 32
Show 20489+3503 SEI1257 AB 215 17.9 37
Show 20466+3452 SEI1246 58 18.9 38
Show 20466+3451 SEI1245 5 23.1 38
Show 20521+3439 RAO 521 -1 0.2 43
Show Aljanah 20462+3358 CHR 100 Aa,Ab 350 0.0 43
Show Aljanah 20462+3358 STT 594 AB 261 79.2 43
Show Aljanah 20462+3358 BU 676 AC 269 79.0 43
Show Aljanah 20462+3358 LEP 96 AD 271 93.4 43
Show 20477+3343 NSN 736 354 45.5 46
Show 20465+3504 GRV 379 162 57.1 48
Show 20522+3401 TDT2593 357 2.3 50
Show 20487+3334 ES 9006 93 25.3 53
Show 20503+3337 ES 2378 193 6.2 54
Show 20464+3511 COU1810 183 0.2 54
Show 20448+3401 GRV 376 179 65.2 55
Show 20445+3409 HU 690 278 0.5 56
Show 20446+3401 TDT2511 239 0.6 59
Show 20447+3357 ES 2311 44 7.0 59
Show 20482+3326 ES 2377 220 4.3 61
Show 20442+3404 TDT2507 165 0.9 61
Show 20538+3431 TDT2611 160 2.1 63
Show 20522+3513 HO 145 286 16.9 63
Show 20532+3349 TDT2605 301 0.8 67
Show 20499+3531 SEI1266 179 10.5 67
Show 20456+3521 TDT2520 16 0.4 68
Show 20544+3435 SEI1304 68 21.0 69
Show 20543+3415 KPP3363 AB 275 49.6 70
Show 20501+3534 TDT2567 125 0.4 71
Show 20519+3327 GYL 26 AB 353 28.6 71
Show 20519+3327 WSI 47 AC 337 11.0 71
Show 20470+3318 TDT2535 86 0.7 72
Show 20540+3459 SEI1303 139 20.7 72
Show 20431+3411 ES 2310 33 4.1 73
Show 20493+3314 ES 31 AB 238 13.8 73
Show 20493+3314 ES 31 AC 143 18.7 73
Show 20429+3430 SEI1225 275 17.0 74
Show 20462+3533 ES 2252 AB 294 4.2 74
Show 20462+3533 LMP 18 AB,C 82 26.0 74
Show 20462+3533 LMP 18 AB,D 85 35.5 74

 
 
WDS 20488+3426 : COMPONENTS
 
 
  A
B pa=280.3°
sep=21.83"
 
 
20488+3426 A
 
 
Componente originario normalizzato AB Coord arcsec 2000 204847.96+342607.6 Mag 11.27 PmRA -2.00
PmDE -5.0 Tycho2 2695-01350-1
Tycho2
Tycho2 2695-01350-1 Pflag RAmdeg 312.19987395 DEmdeg 34.43545882
PmRA -4.5 PmDE -2.4 E RAmdeg 26 E DEmdeg 27
E pmRA 2.0 E pmDE 2.1 EpRAm 1987.63 EpDEm 1989.07
Num 6 Q RAmdeg 1.2 Q DEmdeg 1.0 Q pmRA 1.1
Q pmDE 1.0 BTmag 11.053 E BTmag 0.042 VTmag 10.983
E VTmag 0.057 Prox 999 TYC T HIP
CCDM RAdeg 312.19988750 DEdeg 34.43546528 EpRA 1990 1.57
EpDE 1990 1.66 E RAdeg 29.5 E DEdeg 28.2 Posflg
Corr 0.1
CCDM
Ccdm 20488+3426 RComp Comp A Note1
Note2 Discov num DRAs -0.02 DDEs 7.9
R dRAs 65 Year Theta Rho
Obs 2 Vmag 10.8 Sp PmNote
PmRA PmDE Dm number +33 4035 Cat1 BD
Name2 Cat2 HD M HD
ADS BDS M ADS BDS N IDS IDS 20448N3404A
HIC
 
 
20488+3426 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 204846.22+342611.5 Mag 13.29 PmRA 4.00
PmDE -1.0 Calc delta mag 2.02 Calc coord yes
CCDM
Ccdm 20488+3426 RComp Comp B Note1
Note2 Discov num SEI1256 DRAs -2.15 DDEs 11.9
R dRAs 65 Year 1896 Theta 278 Rho 26.4
Obs 1 Vmag 12.6 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS M ADS BDS N IDS IDS 20448N3404B
HIC