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Current system
21028+3534
BTG 6 BD


Nearby doubles
16' : 21030+3549
SEI1378

19' : 21042+3530
SEI1388

20' : 21042+3542
SEI1387

20' : 21029+3554
J 1078AB

21' : 21011+3532
SEI1366

22' : 21025+3512
CRB 136

25' : 21048+3531
S 773AB

26' : 21042+3552
TDT2724

28' : 21013+3554
SEI1368

28' : 21044+3551
SEI1390

28' : 21048+3545
SEI1392

28' : 21030+3507
TDS1113

28' : 21050+3526
STF2753

33' : 21003+3543
SEI1361

34' : 21002+3547
POP 81

34' : 21012+3602
CLP 1AB

36' : 21056+3533
TDT2736

37' : 21054+3550
SEI1396

38' : 21050+3559
SEI1395

39' : 21059+3528
TDT2744

40' : 21041+3609
SEI1386

41' : 21043+3608
HJ 1610

41' : 21000+3512
TDT2685

42' : 20590+3541
GCB 61

44' : 20592+3541
TDT2674

45' : 20593+3520
TDT2676



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

21028+3534 BTG 6 BD

 
 
21h 02m 45.85s +35° 33' 36.0" P.A. 274.00 sep 15.9 mag 11.50,14.20
 
 
Coord 2000 21028+3534 Discov num BTG   6 Comp BD Coord arcsec 2000 21 02 45.85 +35 33 36.0
Date first 1998 Date last 2020 Obs 8
Pa first 274 Pa last 273.6 P.A. Now (θ) 273.6°
Sep first 15.8 Sep last 15.921 Sep. Now (ρ) 15.921"
Mag pri 11.50 Mag sec 14.20 delta mag (ΔM) 2.7 Spectral class
Pri motion ra -005 Sec motion ra -014
Pri motion dec +007 Sec motion dec +011
Notes N R (See Notes, Red magnitudes)
rPM=0.553
Nature of this double is uncertain.
 
 
21028+3534 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 21 02 46 +35 33 30 SEI 1375 AB 2020 14 339 6.5 12.30 11.50 0.80
Show 21 02 46 +35 33 30 SEI 1376 AC 2020 11 270 11.1 12.30 12.70 0.40
Show 21 02 46 +35 33 36 BTG 6 BC 2020 11 235 10.6 11.50 12.70 1.20
Show 21 02 46 +35 33 36 BTG 6 BD 2020 8 274 15.9 11.50 14.20 2.70 <===
Quadruple system
4 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Cygnus Gaia DR2 1868182788042313856
 
 
WDS 21028+3534 BTG 6 BD : NOTES
 
 
discov_num notes refcode
SEI1375 Coordinate confusion led to mislabelling of some components. The BTG 6
AD pair was actually BD, the BTG 6 AE pair was actually BC.
 
 
REFERENCES
 
 
refcode metd author reference
Btg2007 C u Bertoglio, A. 2007JDSO....3..128B
Btg2007 JDSO 3, 128, 2007
Btg2010 C u Bertoglio, A. 2010JDSO....6..116B
Btg2010 JDSO 6, 116, 2010
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
21028+3534 BTG 6 BD 2007 3 274 16.0 11.50 14.20 N R 210245.85+353336.0
21028+3534 BTG 6 BD 2015 4 274 15.7 11.50 14.20 N R 210245.85+353336.0
21028+3534 BTG 6 BD 2020 8 274 15.9 11.50 14.20 N R 210245.85+353336.0

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

 
 
WDS 21028+3534 BTG 6 BD : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 21028+3534 BTG 6 BD : MEASURES
 
 
No records found.

 
 
WDS 21028+3534 : VIRTUAL EYEPIECE
 
 

21028+3534 SEI1375A mag 12.3 21028+3534 BTG 6B sep 6.8 P.A. 336.60 mag 11.5 21028+3534 SEI1376C sep 9.0 P.A. 270.20 mag 12.7 21028+3534 BTG 6D sep 17.2 P.A. 294.80 mag 14.2 virtual eyepiece
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Pass over with the mouse cursor to display the catalog designation.
Radius:
Components only
 
 
WDS 21028+3534 : ALADIN DSS IMAGE @ 21h 02m 45.85s +35° 33' 36.0"
 
 
 
 
WDS 21028+3534 BTG 6 BD : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

21028+3534 BTG 6BD distance=0' 21028+3534 SEI1375AB distance=1' 21028+3534 SEI1376AC distance=1' 21030+3549 SEI1378 distance=16' 21035+3549 B 2BC distance=19' 21042+3530 SEI1388 distance=19' 21042+3542 SEI1387 distance=20' 21035+3549 B 2A,BC distance=20' 21029+3554 J 1078AB distance=20' 21029+3554 J 1078AC distance=20' 21011+3532 SEI1366 distance=21' 21025+3512 CRB 136 distance=22' 21048+3531 S 773AB distance=25' 21048+3531 TDT2727Ba,Bb distance=26' 21048+3531 GRV 410BC distance=26' 21042+3552 TDT2724 distance=26' 21013+3554 SEI1368 distance=28' 21044+3551 SEI1390 distance=28' 21048+3545 SEI1392 distance=28' 21030+3507 TDS1113 distance=28' 21050+3526 STF2753 distance=28' 21003+3543 SEI1361 distance=33' 21002+3547 POP 81 distance=34' 21012+3602 CLP 1AB distance=34' 21012+3602 CLP 1BC distance=35' 21056+3533 TDT2736 distance=36' 21054+3550 SEI1396 distance=37' 21050+3559 SEI1395 distance=38' 21059+3528 TDT2744 distance=39' 21041+3609 SEI1386 distance=40' 21043+3608 HJ 1610 distance=41' 21000+3512 TDT2685 distance=41' 20590+3541 GCB 61 distance=42' 20592+3541 TDT2674 distance=44' 20593+3520 TDT2676 distance=45' 21062+3520 GRV 417 distance=45' 20591+3542 SEI1345 distance=46' 20596+3558 SEI1355 distance=47' 20593+3554 SEI1350 distance=47' 21001+3608 TDT2687 distance=48' 21061+3558 SEI1401 distance=48' 20588+3530 SEI1342 distance=49' 21059+3459 POP 24 distance=52' 20599+3612 SEI1359 distance=52' 21058+3610 SEI1398 distance=53' 21067+3554 GRV 418 distance=53' 21061+3459 POP 25 distance=54' 21002+3620 TDT2689 distance=56' 21054+3447 GRV 414 distance=58' 21037+3630 SEI1383 distance=58' 21018+3630 SEI1372 distance=58' 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 21028+3534 BTG 6 BC 235 10.6
Show 21028+3534 BTG 6 BD 274 15.9
Show 21028+3534 SEI1375 AB 339 6.5 1
Show 21028+3534 SEI1376 AC 270 11.1 1
Show 21030+3549 SEI1378 222 29.0 16
Show 21035+3549 B 2 BC 28 2.8 19
Show 21042+3530 SEI1388 211 22.1 19
Show 21042+3542 SEI1387 133 9.1 20
Show 21035+3549 B 2 A,BC 250 138.5 20
Show 21029+3554 J 1078 AB 112 2.7 20
Show 21029+3554 J 1078 AC 137 24.4 20
Show 21011+3532 SEI1366 279 22.9 21
Show 21025+3512 CRB 136 267 20.1 22
Show 21048+3531 S 773 AB 30 86.3 25
Show 21048+3531 TDT2727 Ba,Bb 170 0.4 26
Show 21048+3531 GRV 410 BC 82 17.2 26
Show 21042+3552 TDT2724 181 1.1 26
Show 21013+3554 SEI1368 57 13.3 28
Show 21044+3551 SEI1390 343 17.4 28
Show 21048+3545 SEI1392 338 4.0 28
Show 21030+3507 TDS1113 9 2.1 28
Show 21050+3526 STF2753 335 29.3 28
Show 21003+3543 SEI1361 281 20.8 33
Show 21002+3547 POP 81 204 5.9 34
Show 21012+3602 CLP 1 AB 39 74.3 34
Show 21012+3602 CLP 1 BC 150 267.2 35
Show 21056+3533 TDT2736 282 0.4 36
Show 21054+3550 SEI1396 13 27.7 37
Show 21050+3559 SEI1395 133 21.1 38
Show 21059+3528 TDT2744 36 0.6 39
Show 21041+3609 SEI1386 152 25.9 40
Show 21043+3608 HJ 1610 245 11.0 41
Show 21000+3512 TDT2685 137 0.7 41
Show 20590+3541 GCB 61 252 5.9 42
Show 20592+3541 TDT2674 340 0.9 44
Show 20593+3520 TDT2676 23 0.8 45
Show 21062+3520 GRV 417 143 41.2 45
Show 20591+3542 SEI1345 174 20.2 46
Show 20596+3558 SEI1355 344 4.2 47
Show 20593+3554 SEI1350 48 28.1 47
Show 21001+3608 TDT2687 356 1.5 48
Show 21061+3558 SEI1401 333 10.5 48
Show 20588+3530 SEI1342 100 4.1 49
Show 21059+3459 POP 24 247 8.2 52
Show 20599+3612 SEI1359 108 16.5 52
Show 21058+3610 SEI1398 36 30.5 53
Show 21067+3554 GRV 418 216 58.1 53
Show 21061+3459 POP 25 303 5.5 54
Show 21002+3620 TDT2689 244 2.3 56
Show 21054+3447 GRV 414 170 67.7 58
Show 21037+3630 SEI1383 124 9.3 58

 
 
WDS 21028+3534 : COMPONENTS
 
 
  A B C
B pa=336.6°
sep=6.76"
 
C pa=270.2°
sep=9.02"
pa=225.8°
sep=8.84"
 
D pa=294.8°
sep=17.19"
pa=274.4°
sep=12.96"
pa=317.4°
sep=9.73"
 
 
21028+3534 A
 
 
Coord arcsec 2000 210246.07+353329.8 Mag 12.3 PmRA 0.00 PmDE -5.0
CCDM
Ccdm 21028+3534 RComp Comp A Note1
Note2 Discov num DRAs -2.02 DDEs -27.1
R dRAs 65 Year Theta Rho
Obs 3 Vmag 10.0 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A14580 M ADS BDS N IDS IDS 20588N3510A
HIC
 
 
21028+3534 B
 
 
Coord arcsec 2000 210245.85+353336.0 Coord calc 210245.85+353336.0 Mag 11.5 PmRA -5.00
PmDE 7.0 Calc delta mag 0.8
CCDM
Ccdm 21028+3534 RComp Comp B Note1
Note2 Discov num SEI1375 DRAs DDEs
R dRAs Year 1896 Theta 338 Rho 6.0
Obs 2 Vmag 11.0 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A14580 M ADS BDS N IDS IDS 20588N3510B
HIC
 
 
21028+3534 C
 
 
Coord arcsec 2000 210245.33+353329.8 Mag 12.7 PmRA 2.00 PmDE -2.0
Calc delta mag 0.4 Calc coord yes
CCDM
Ccdm 21028+3534 RComp Comp C Note1
Note2 Discov num SEI1376 DRAs DDEs
R dRAs Year 1896 Theta 271 Rho 11.3
Obs 2 Vmag 11.0 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A14580 M ADS BDS N IDS IDS 20588N3510C
HIC
 
 
21028+3534 D
 
 
Coord arcsec 2000 210244.79+353337.0 Mag 14.2 PmRA -14.00 PmDE 11.0
Calc delta mag 1.9 Calc coord yes