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Current system
21493+3937
SEI 1536


Nearby doubles
16' : 21505+3944
ES 211AB

17' : 21504+3927
HO 170

23' : 21512+3941
TDT3192

24' : 21513+3938
TDT3196

25' : 21487+3914
TDS1147

25' : 21490+3912
TDT3173

27' : 21509+3918
MLB 788

30' : 21481+3911
TDT3162

40' : 21459+3943
SEI1535

43' : 21506+4017
SEI1539

46' : 21458+3945
MLB 902

48' : 21492+3849
TDT3176

49' : 21454+3955
SEI1534

50' : 21450+3942
GRV 499

51' : 21520+3857
COU1823

53' : 21506+3847
MLB 962

54' : 21518+4022
TDT3199

55' : 21529+3901
SEI1542

57' : 21445+3933
A 1447

57' : 21498+4033
TDT3183

59' : 21542+3953
HJ 1703

60' : 21523+4025
ES 261

61' : 21464+3847
MLB 961

64' : 21453+3853
TDT3139

67' : 21458+4029
ES 1693

68' : 21526+3841
MLB 991



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

21493+3937 SEI 1536

 
 
21h 49m 18.35s +39° 37' 00.1" P.A. 147.00 sep 28.1 mag 10.04,11.80 Sp A2
 
 
Coord 2000 21493+3937 Discov num SEI1536 Comp Coord arcsec 2000 21 49 18.35 +39 37 00.1
Date first 1895 Date last 2016 Obs 11
Pa first 154 Pa last 146.5 P.A. Now (θ) 146.5°
Sep first 27.5 Sep last 28.122 Sep. Now (ρ) 28.122"
Mag pri 10.04 Mag sec 11.80 delta mag (ΔM) 1.76 Spectral class A2 (white)
Pri motion ra -010 Sec motion ra +016
Pri motion dec -012 Sec motion dec -003
Notes
rPM=1.69
This double is not physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Cygnus Tycho2 3188-00660-1 Gaia DR2 1953394251992756480
 
 
WDS 21493+3937 SEI 1536 : 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
21493+3937 SEI1536 1998 4 148 27.8 10.04 12.20 A2 D 214918.35+393700.1
21493+3937 SEI1536 2002 5 148 27.9 10.04 12.20 A2 D 214918.35+393700.1
21493+3937 SEI1536 2010 6 148 27.9 10.04 11.80 A2 214918.35+393700.1
21493+3937 SEI1536 2016 7 147 28.1 10.04 11.80 A2 214918.35+393700.1

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

 
 
WDS 21493+3937 SEI 1536 : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 21493+3937 SEI 1536 : MEASURES
 
 
No records found.

 
 
WDS 21493+3937 : VIRTUAL EYEPIECE
 
 

21493+3937 SEI1536A mag 10.04 Sp A2 21493+3937 SEI1536B sep 26.3 P.A. 153.00 mag 11.8 virtual eyepiece
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Pass over with the mouse cursor to display the catalog designation.
Radius:
Components only
 
 
WDS 21493+3937 : ALADIN DSS IMAGE @ 21h 49m 18.35s +39° 37' 00.1"
 
 
 
 
WDS 21493+3937 SEI 1536 : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

21493+3937 SEI1536 distance=1' 21505+3944 ES 211AB distance=16' 21505+3944 ES 211AC distance=16' 21505+3944 ES 211AD distance=16' 21504+3927 HO 170 distance=17' 21512+3941 TDT3192 distance=23' 21513+3938 TDT3196 distance=24' 21487+3914 TDS1147 distance=25' 21490+3912 TDT3173 distance=25' 21509+3918 MLB 788 distance=27' 21481+3911 TDT3162 distance=30' 21459+3943 SEI1535 distance=40' 21506+4017 SEI1539 distance=43' 21458+3945 MLB 902 distance=46' 21492+3849 TDT3176 distance=48' 21454+3955 SEI1534 distance=49' 21450+3942 GRV 499 distance=50' 21520+3857 COU1823 distance=51' 21506+3847 MLB 962 distance=53' 21518+4022 TDT3199 distance=54' 21529+3901 SEI1542 distance=55' 21445+3933 A 1447 distance=57' 21498+4033 TDT3183 distance=57' 21542+3953 HJ 1703 distance=59' 21523+4025 ES 261 distance=60' 21464+3847 MLB 961 distance=61' 21453+3853 TDT3139 distance=64' 21458+4029 ES 1693 distance=67' 21526+3841 MLB 991 distance=68' 21512+4050 GRV 515 distance=77' 21520+3826 HDS3114 distance=78' 21493+3816 A 1448 distance=81' 21494+4058 TDT3178 distance=81' 21429+3904 GRV 496 distance=81' 21550+3851 TDT3237 distance=81' 21538+4041 COU1980 distance=83' 21431+4021 TDT3121 distance=84' 21550+3843 KU 62 distance=86' 21522+3817 TDT3205 distance=87' 21556+3849 A 1449 distance=88' 21466+3815 COU1639 distance=89' 21484+3806 ALI 694 distance=93' 21413+3928 BU 274 distance=93' 21545+4052 TDT3230 distance=97' 21421+3848 ALI 980 distance=98' 21417+4022 TDT3111 distance=98' 21571+3858 SEI1545 distance=99' 21576+3912 TDT3260 distance=100' 21576+4004 SEI1546 distance=100' 21436+3822 ES 2522 distance=102' 21456+4110 TDT3144 distance=103' 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 21493+3937 SEI1536 147 28.1 1
Show 21505+3944 ES 211 AB 197 2.5 16
Show 21505+3944 ES 211 AC 178 10.1 16
Show 21505+3944 ES 211 AD 102 21.1 16
Show 21504+3927 HO 170 256 0.3 17
Show 21512+3941 TDT3192 118 0.5 23
Show 21513+3938 TDT3196 234 2.1 24
Show 21487+3914 TDS1147 26 1.0 25
Show 21490+3912 TDT3173 137 0.6 25
Show 21509+3918 MLB 788 52 4.9 27
Show 21481+3911 TDT3162 146 2.0 30
Show 21459+3943 SEI1535 229 8.5 40
Show 21506+4017 SEI1539 260 27.0 43
Show 21458+3945 MLB 902 327 5.6 46
Show 21492+3849 TDT3176 1 2.3 48
Show 21454+3955 SEI1534 189 27.8 49
Show 21450+3942 GRV 499 170 67.4 50
Show 21520+3857 COU1823 13 1.0 51
Show 21506+3847 MLB 962 322 4.4 53
Show 21518+4022 TDT3199 341 3.9 54
Show 21529+3901 SEI1542 172 29.7 55
Show 21445+3933 A 1447 243 0.4 57
Show 21498+4033 TDT3183 55 0.8 57
Show 21542+3953 HJ 1703 82 8.9 59
Show 21523+4025 ES 261 165 5.1 60
Show 21464+3847 MLB 961 4 6.5 61
Show 21453+3853 TDT3139 65 0.5 64
Show 21458+4029 ES 1693 34 7.4 67
Show 21526+3841 MLB 991 4.4 68
Show 21512+4050 GRV 515 313 28.2 77
Show 21520+3826 HDS3114 119 0.1 78
Show 21493+3816 A 1448 331 4.7 81
Show 21494+4058 TDT3178 251 0.6 81
Show 21429+3904 GRV 496 72 29.9 81
Show 21550+3851 TDT3237 115 1.7 81
Show 21538+4041 COU1980 247 1.5 83
Show 21431+4021 TDT3121 157 1.7 84
Show 21550+3843 KU 62 54 1.6 86
Show 21522+3817 TDT3205 142 0.5 87
Show 21556+3849 A 1449 50 0.3 88
Show 21466+3815 COU1639 204 1.8 89
Show 21484+3806 ALI 694 163 6.4 93
Show 21413+3928 BU 274 180 3.7 93
Show 21545+4052 TDT3230 222 2.0 97
Show 21421+3848 ALI 980 139 8.9 98
Show 21417+4022 TDT3111 296 2.7 98
Show 21571+3858 SEI1545 324 5.8 99
Show 21576+3912 TDT3260 304 0.5 100
Show 21576+4004 SEI1546 212 29.0 100
Show 21436+3822 ES 2522 101 4.0 102
Show 21456+4110 TDT3144 193 2.2 103

 
 
WDS 21493+3937 : COMPONENTS
 
 
  A
B pa=153.0°
sep=26.32"
 
 
21493+3937 A
 
 
Componente originario normalizzato AB Coord arcsec 2000 214918.35+393700.1 Mag 10.04 Spectral class A2 (white)
PmRA -10.00 PmDE -12.0 Tycho2 3188-00660-1
Tycho2
Tycho2 3188-00660-1 Pflag RAmdeg 327.32647308 DEmdeg 39.61669177
PmRA -10.4 PmDE -12.7 E RAmdeg 16 E DEmdeg 14
E pmRA 1.0 E pmDE 1.0 EpRAm 1987.27 EpDEm 1988.71
Num 10 Q RAmdeg 1.1 Q DEmdeg 1.4 Q pmRA 1.1
Q pmDE 1.3 BTmag 10.418 E BTmag 0.028 VTmag 10.042
E VTmag 0.026 Prox 277 TYC T HIP
CCDM RAdeg 327.32650472 DEdeg 39.61672000 EpRA 1990 1.56
EpDE 1990 1.69 E RAdeg 17.6 E DEdeg 14.9 Posflg
Corr 0.1
CCDM
Ccdm 21493+3937 RComp Comp A Note1
Note2 Discov num DRAs 0.37 DDEs -0.8
R dRAs 10 Year Theta Rho
Obs 2 Vmag 9.8 Sp PmNote *
PmRA 5 PmDE -29 Dm number +38 4613 Cat1 BD
Name2 +39 2324 Cat2 AGK2/3 HD M HD
ADS BDS M ADS BDS N IDS IDS 21452N3909A
HIC
 
 
21493+3937 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 214919.38+393636.6 Mag 11.8 PmRA 16.00
PmDE -3.0 Tycho2 3188-00588-1 Calc delta mag 1.76 Calc coord yes
Tycho2
Tycho2 3188-00588-1 Pflag RAmdeg 327.33172525 DEmdeg 39.61014213
PmRA 14.7 PmDE -8.3 E RAmdeg 113 E DEmdeg 97
E pmRA 3.1 E pmDE 2.8 EpRAm 1970.82 EpDEm 1974.21
Num 3 Q RAmdeg 0.2 Q DEmdeg 4.0 Q pmRA 0.2
Q pmDE 4.0 BTmag 12.358 E BTmag 0.142 VTmag 12.203
E VTmag 0.161 Prox 277 TYC HIP
CCDM RAdeg 327.33167944 DEdeg 39.61014889 EpRA 1990 1.54
EpDE 1990 1.71 E RAdeg 131.1 E DEdeg 109.1 Posflg
Corr 0.1
CCDM
Ccdm 21493+3937 RComp Comp B Note1
Note2 Discov num SEI1536 DRAs DDEs
R dRAs Year 1895 Theta 154 Rho 27.4
Obs 2 Vmag 11.2 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS M ADS BDS N IDS IDS 21452N3909B
HIC