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Doubles in session


Current system
20308+3749
SEI 1147 AC


Nearby doubles
7' : 20304+3753
TDT2328

21' : 20315+3806
SEI1151

22' : 20297+3733
ES 2509

23' : 20297+3808
STF2691

26' : 20293+3731
WEI 35AB

28' : 20328+3736
TDT2355

30' : 20323+3726
SEI1156

32' : 20288+3810
ES 206

34' : 20288+3812
ES 2508

35' : 20302+3823
SEI1141

41' : 20340+3737
SEI1170

41' : 20280+3813
ES 2507

44' : 20331+3822
TDT2363

44' : 20282+3821
TDT2304

44' : 20317+3831
ES 246AB

44' : 20281+3820
SMR 71

45' : 20300+3832
SMA 117

45' : 20304+3833
A 1430

45' : 20327+3711
SEI1158AB

46' : 20314+3833
JNN 284

46' : 20345+3759
BKO 569

50' : 20344+3725
SEI1171

50' : 20296+3836
SEI1136

51' : 20350+3757
SEI1178AB

52' : 20352+3754
SEI1180AB

53' : 20352+3755
SEI1182



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

20308+3749 SEI 1147 AC

 
 
20h 30m 45.51s +37° 48' 58.8" P.A. 286.00 sep 14.5 mag 12.25,12.53
 
 
Coord 2000 20308+3749 Discov num SEI1147 Comp AC Coord arcsec 2000 20 30 45.51 +37 48 58.8
Date first 1895 Date last 2015 Obs 8
Pa first 280 Pa last 285.6 P.A. Now (θ) 285.6°
Sep first 18.7 Sep last 14.462 Sep. Now (ρ) 14.462"
Mag pri 12.25 Mag sec 12.53 delta mag (ΔM) 0.28 Spectral class
Pri motion ra +003 Sec motion ra +035
Pri motion dec -001 Sec motion dec +010
Notes B (Blue magnitudes)
rPM=0.93
This double is not physical.
 
 
20308+3749 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 20 30 46 +37 48 59 SEI 1146 AB 2015 9 42 10.2 12.25 12.27 0.02
Show 20 30 46 +37 48 59 SEI 1147 AC 2015 8 286 14.5 12.25 12.53 0.28 <===
Triple system
3 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Cygnus Gaia DR2 2063852182251302656
 
 
WDS 20308+3749 SEI 1147 AC : 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
20308+3749 SEI1147 AC 1998 3 284 14.9 12.25 12.53 DB 203045.51+374858.8
20308+3749 SEI1147 AC 2002 4 285 14.8 12.25 12.53 DB 203045.51+374858.8
20308+3749 SEI1147 AC 2015 5 286 14.5 12.25 12.53 B 203045.51+374858.8

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

 
 
WDS 20308+3749 SEI 1147 AC : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 20308+3749 SEI 1147 AC : MEASURES
 
 
No records found.

 
 
WDS 20308+3749 : VIRTUAL EYEPIECE
 
 

20308+3749 SEI1146A mag 12.25 20308+3749 SEI1146B sep 9.3 P.A. 35.70 mag 12.27 20308+3749 SEI1147C sep 11.7 P.A. 289.50 mag 12.53 virtual eyepiece
Click on the map to see the double of your interest.
Pass over with the mouse cursor to display the catalog designation.
Radius:
Components only
 
 
WDS 20308+3749 : ALADIN DSS IMAGE @ 20h 30m 45.51s +37° 48' 58.8"
 
 
 
 
WDS 20308+3749 SEI 1147 AC : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

20308+3749 SEI1147AC distance=0' 20304+3753 TDT2328 distance=7' 20315+3806 SEI1151 distance=21' 20297+3733 ES 2509 distance=22' 20297+3808 STF2691 distance=23' 20293+3731 WEI 35CD distance=25' 20293+3731 WEI 35AB distance=26' 20293+3731 WEI 35AC distance=26' 20293+3731 WEI 35BC distance=26' 20328+3736 TDT2355 distance=28' 20323+3726 SEI1156 distance=30' 20288+3810 ES 206 distance=32' 20288+3812 ES 2508 distance=34' 20302+3823 SEI1141 distance=35' 20340+3737 SEI1170 distance=41' 20280+3813 ES 2507 distance=41' 20331+3822 TDT2363 distance=44' 20282+3821 TDT2304 distance=44' 20317+3831 ES 246AB distance=44' 20317+3831 ES 246AC distance=44' 20281+3820 SMR 71 distance=44' 20300+3832 SMA 117 distance=45' 20304+3833 A 1430 distance=45' 20327+3711 SEI1158AB distance=45' 20327+3711 TDT2352Aa,Ab distance=45' 20314+3833 JNN 284 distance=46' 20345+3759 BKO 569 distance=46' 20344+3725 SEI1171 distance=50' 20296+3836 SEI1136 distance=50' 20350+3757 SEI1178AB distance=51' 20350+3757 BKO 570AC distance=51' 20352+3754 SEI1180AB distance=52' 20352+3754 SEI1181AC distance=52' 20352+3754 SEI1180BC distance=52' 20352+3755 SEI1182 distance=53' 20310+3656 AC 18AB distance=53' 20310+3656 KUI 98AC distance=53' 20310+3656 AC 18AD distance=53' 20276+3926 GUL 3 distance=54' 20313+3654 TOB 188 distance=56' 20355+3749 SEI1184 distance=56' 20311+3652 SEI1148 distance=57' 20351+3725 SEI1179 distance=58' 20259+3758 SEI1123 distance=58' 20263+3728 AG 255 distance=58' 20337+3835 A 1431 distance=58' 20311+3847 SEI1150 distance=59' 20357+3747 TOB 190 distance=59' 20354+3810 RAO 439 distance=60' 20257+3745 FOX 36 distance=60' 20306+3850 SEI1144 distance=62' 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 20308+3749 SEI1146 AB 42 10.2
Show 20308+3749 SEI1147 AC 286 14.5
Show 20304+3753 TDT2328 45 0.5 7
Show 20315+3806 SEI1151 215 25.1 21
Show 20297+3733 ES 2509 241 3.3 22
Show 20297+3808 STF2691 32 16.3 23
Show 20293+3731 WEI 35 CD 202 12.1 25
Show 20293+3731 WEI 35 AB 214 4.2 26
Show 20293+3731 WEI 35 AC 100 87.6 26
Show 20293+3731 WEI 35 BC 98 89.3 26
Show 20328+3736 TDT2355 57 2.3 28
Show 20323+3726 SEI1156 89 5.9 30
Show 20288+3810 ES 206 124 4.2 32
Show 20288+3812 ES 2508 302 6.3 34
Show 20302+3823 SEI1141 175 22.5 35
Show 20340+3737 SEI1170 28 17.3 41
Show 20280+3813 ES 2507 84 8.2 41
Show 20331+3822 TDT2363 174 0.5 44
Show 20282+3821 TDT2304 199 5.4 44
Show 20317+3831 ES 246 AB 355 5.1 44
Show 20317+3831 ES 246 AC 354 9.9 44
Show 20281+3820 SMR 71 65 8.4 44
Show 20300+3832 SMA 117 264 12.4 45
Show 20304+3833 A 1430 132 3.4 45
Show 20327+3711 SEI1158 AB 109 20.9 45
Show 20327+3711 TDT2352 Aa,Ab 160 0.4 45
Show 20314+3833 JNN 284 252 0.1 46
Show 20345+3759 BKO 569 73 8.5 46
Show 20344+3725 SEI1171 201 17.4 50
Show 20296+3836 SEI1136 259 11.5 50
Show 20350+3757 SEI1178 AB 174 19.1 51
Show 20350+3757 BKO 570 AC 12 6.2 51
Show 20352+3754 SEI1180 AB 138 28.4 52
Show 20352+3754 SEI1181 AC 102 29.4 52
Show 20352+3754 SEI1180 BC 33 17.9 52
Show 20352+3755 SEI1182 115 8.9 53
Show 20310+3656 AC 18 AB 158 2.2 53
Show 20310+3656 KUI 98 AC 76 16.8 53
Show 20310+3656 AC 18 AD 165 63.1 53
Show 20276+3926 GUL 3 335 0.5 54
Show 20313+3654 TOB 188 262 17.0 56
Show 20355+3749 SEI1184 36 27.0 56
Show 20311+3652 SEI1148 281 24.5 57
Show 20351+3725 SEI1179 69 27.3 58
Show 20259+3758 SEI1123 138 27.6 58
Show 20263+3728 AG 255 287 5.2 58
Show 20337+3835 A 1431 29 0.9 58
Show 20311+3847 SEI1150 74 21.6 59
Show 20357+3747 TOB 190 68 17.8 59
Show 20354+3810 RAO 439 235 0.7 60
Show 20257+3745 FOX 36 325 2.7 60

 
 
WDS 20308+3749 : COMPONENTS
 
 
  A B
B pa=35.7°
sep=9.32"
 
C pa=289.5°
sep=11.67"
pa=257.4°
sep=16.85"
 
 
20308+3749 A
 
 
Coord arcsec 2000 203045.51+374858.8 Mag 12.25 PmRA 3.00 PmDE -1.0
CCDM
Ccdm 20308+3749 RComp Comp A Note1
Note2 Discov num DRAs -2.17 DDEs 1.8
R dRAs 65 Year Theta Rho
Obs 4 Vmag 9.5 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS M ADS BDS N IDS IDS 20270N3729A
HIC
 
 
20308+3749 B
 
 
Coord arcsec 2000 203045.97+374906.4 Mag 12.27 PmRA 2.00 PmDE 0.0
Calc delta mag 0.02 Calc coord yes
CCDM
Ccdm 20308+3749 RComp Comp B Note1
Note2 Discov num SEI1147 DRAs -3.71 DDEs 1.8
R dRAs 65 Year 1895 Theta 280 Rho 18.7
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 20270N3729B
HIC
 
 
20308+3749 C
 
 
Coord arcsec 2000 203044.58+374902.7 Mag 12.53 PmRA 35.00 PmDE 10.0
Calc delta mag 0.28 Calc coord yes
CCDM
Ccdm 20308+3749 RComp Comp C Note1
Note2 Discov num DRAs DDEs
R dRAs Year Theta Rho
Obs Vmag 11.8 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS M ADS BDS N IDS IDS 20270N3729A
HIC