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Current system
21431+4021
TDT 3121


Nearby doubles
16' : 21417+4022
TDT3111

27' : 21408+4027
TDT3102

33' : 21458+4029
ES 1693

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S 796AB

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SEI1534

38' : 21422+4057
DAM 231

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MLB 30

43' : 21426+4103
BU 688AB

45' : 21450+3942
GRV 499

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KUI 108AB

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MLB 902

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MLB 29

51' : 21459+3943
SEI1535

52' : 21445+3933
A 1447

54' : 21393+3948
KPP4241

55' : 21399+3941
A 1446

57' : 21413+3928
BU 274

58' : 21456+4110
TDT3144

60' : 21412+4117
COU1977

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TDT3090

62' : 21431+4122
COU1978

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A 1445AB

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MLB 786

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DRS 20

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ALI 978

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TDT3080



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

21431+4021 TDT 3121

 
 
21h 43m 04.10s +40° 20' 45.3" P.A. 157.00 sep 1.7 mag 11.85,12.36
 
 
Coord 2000 21431+4021 Discov num TDT3121 Comp Coord arcsec 2000 21 43 04.10 +40 20 45.3
Date first 1991 Date last 2016 Obs 3
Pa first 157 Pa last 156.6 P.A. Now (θ) 156.6°
Sep first 1.9 Sep last 1.675 Sep. Now (ρ) 1.675"
Mag pri 11.85 Mag sec 12.36 delta mag (ΔM) 0.51 Spectral class
Pri motion ra -014 Sec motion ra -014
Pri motion dec +003 Sec motion dec +003
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Cygnus Tycho2 3188-01558-1 Gaia DR2 1954341103300482944
 
 
WDS 21431+4021 TDT 3121 : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
No records found.

 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
21431+4021 TDT3121 1991 1 157 1.9 11.85 12.36 214304.10+402045.3
21431+4021 TDT3121 2015 2 157 1.7 11.85 12.36 214304.10+402045.3
21431+4021 TDT3121 2016 3 157 1.7 11.85 12.36 214304.10+402045.3

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

 
 
WDS 21431+4021 TDT 3121 : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 21431+4021 TDT 3121 : MEASURES
 
 
No records found.

 
 
WDS 21431+4021 : VIRTUAL EYEPIECE
 
 

21431+4021 TDT3121A mag 11.85 21431+4021 TDT3121B sep 1.6 P.A. 161.70 mag 12.36 virtual eyepiece
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Pass over with the mouse cursor to display the catalog designation.
Radius:
Components only
 
 
WDS 21431+4021 : ALADIN DSS IMAGE @ 21h 43m 04.10s +40° 20' 45.3"
 
 
 
 
WDS 21431+4021 TDT 3121 : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

21431+4021 TDT3121 distance=0' 21417+4022 TDT3111 distance=16' 21408+4027 TDT3102 distance=27' 21458+4029 ES 1693 distance=33' 21416+4048 S 796AB distance=33' 21416+4048 S 796AC distance=33' 21416+4048 FYM 112AD distance=33' 21416+4048 FYM 112AE distance=33' 21416+4048 FYM 112AF distance=33' 21454+3955 SEI1534 distance=37' 21422+4057 DAM 231 distance=38' 21419+4058 MLB 30 distance=40' 21426+4103 BU 688AB distance=43' 21426+4103 FOX9036AB,D distance=43' 21426+4103 BU 688AB,C distance=43' 21450+3942 GRV 499 distance=45' 21424+4105 KUI 108AB distance=45' 21424+4105 ARY 129AB,C distance=45' 21458+3945 MLB 902 distance=45' 21396+4049 MLB 29 distance=50' 21459+3943 SEI1535 distance=51' 21445+3933 A 1447 distance=52' 21393+3948 KPP4241 distance=54' 21399+3941 A 1446 distance=55' 21413+3928 BU 274 distance=57' 21456+4110 TDT3144 distance=58' 21412+4117 COU1977 distance=60' 21397+3934 TDT3090 distance=62' 21431+4122 COU1978 distance=62' 21399+3931 A 1445AB distance=62' 21399+3931 HJ 1675AC distance=62' 21385+3942 MLB 786 distance=65' 21369+4025 DRS 20 distance=71' 21400+3919 ALI 978 distance=72' 21387+3924 TDT3080 distance=76' 21429+3904 GRV 496 distance=77' 21363+4012 AG 273 distance=78' 21498+4033 TDT3183 distance=78' 21371+3942 TDT3063 distance=79' 21363+4002 MLB 28 distance=80' 21494+4058 TDT3178 distance=82' 21383+3917 GRV 488 distance=84' 21361+4048 TDT3051 distance=84' 21493+3937 SEI1536 distance=84' 21506+4017 SEI1539 distance=87' 21365+4105 TDT3055 distance=88' 21403+3858 MLB 787 distance=89' 21461+4143 TDT3148 distance=90' 21481+3911 TDT3162 distance=91' 21453+3853 TDT3139 distance=92' 21366+3928 VYS 10 distance=92' 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 21431+4021 TDT3121 157 1.7
Show 21417+4022 TDT3111 296 2.7 16
Show 21408+4027 TDT3102 25 1.4 27
Show 21458+4029 ES 1693 34 7.4 33
Show 21416+4048 S 796 AB 233 58.2 33
Show 21416+4048 S 796 AC 282 132.4 33
Show 21416+4048 FYM 112 AD 163 70.0 33
Show 21416+4048 FYM 112 AE 143 73.8 33
Show 21416+4048 FYM 112 AF 305 55.0 33
Show 21454+3955 SEI1534 189 27.8 37
Show 21422+4057 DAM 231 292 8.9 38
Show 21419+4058 MLB 30 228 9.1 40
Show 21426+4103 BU 688 AB 198 0.4 43
Show 21426+4103 FOX9036 AB,D 306 46.7 43
Show 21426+4103 BU 688 AB,C 30 27.0 43
Show 21450+3942 GRV 499 170 67.4 45
Show 21424+4105 KUI 108 AB 14 0.2 45
Show 21424+4105 ARY 129 AB,C 132 145.5 45
Show 21458+3945 MLB 902 327 5.6 45
Show 21396+4049 MLB 29 340 6.8 50
Show 21459+3943 SEI1535 229 8.5 51
Show 21445+3933 A 1447 243 0.4 52
Show 21393+3948 KPP4241 95 4.0 54
Show 21399+3941 A 1446 40 1.3 55
Show 21413+3928 BU 274 180 3.7 57
Show 21456+4110 TDT3144 193 2.2 58
Show 21412+4117 COU1977 97 1.2 60
Show 21397+3934 TDT3090 171 0.7 62
Show 21431+4122 COU1978 87 0.2 62
Show 21399+3931 A 1445 AB 283 1.5 62
Show 21399+3931 HJ 1675 AC 264 37.9 62
Show 21385+3942 MLB 786 209 5.3 65
Show 21369+4025 DRS 20 58 7.0 71
Show 21400+3919 ALI 978 14 13.3 72
Show 21387+3924 TDT3080 245 2.7 76
Show 21429+3904 GRV 496 72 29.9 77
Show 21363+4012 AG 273 3 8.9 78
Show 21498+4033 TDT3183 55 0.8 78
Show 21371+3942 TDT3063 159 0.6 79
Show 21363+4002 MLB 28 256 4.3 80
Show 21494+4058 TDT3178 251 0.6 82
Show 21383+3917 GRV 488 19 59.8 84
Show 21361+4048 TDT3051 275 0.6 84
Show 21493+3937 SEI1536 147 28.1 84
Show 21506+4017 SEI1539 260 27.0 87
Show 21365+4105 TDT3055 247 0.5 88
Show 21403+3858 MLB 787 351 5.4 89
Show 21461+4143 TDT3148 18 0.4 90
Show 21481+3911 TDT3162 146 2.0 91
Show 21453+3853 TDT3139 65 0.5 92
Show 21366+3928 VYS 10 261 1.0 92

 
 
WDS 21431+4021 : COMPONENTS
 
 
  A
B pa=161.7°
sep=1.62"
 
 
21431+4021 A
 
 
Componente originario normalizzato AB Coord arcsec 2000 214304.10+402045.3 Mag 11.85 PmRA -14.00
PmDE 3.0 Tycho2 3188-01558-1
Tycho2
Tycho2 3188-01558-1 Pflag RAmdeg 325.76707670 DEmdeg 40.34591793
PmRA -13.9 PmDE 3.3 E RAmdeg 78 E DEmdeg 71
E pmRA 2.5 E pmDE 2.3 EpRAm 1979.27 EpDEm 1979.34
Num 3 Q RAmdeg 1.0 Q DEmdeg 2.5 Q pmRA 1.0
Q pmDE 2.6 BTmag 12.744 E BTmag 0.186 VTmag 11.812
E VTmag 0.124 Prox 999 TYC HIP
CCDM RAdeg 325.76711667 DEdeg 40.34590639 EpRA 1990 1.63
EpDE 1990 1.69 E RAdeg 83.6 E DEdeg 77.3 Posflg
Corr 0.1
 
 
21431+4021 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 214304.14+402043.8 Mag 12.36 PmRA -14.00
PmDE 3.0 Calc delta mag 0.51 Calc coord yes