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Current system
20251+4042
TDT 2253


Nearby doubles
20' : 20264+4029
MLB1087

23' : 20232+4046
ES 1677

24' : 20231+4047
J 787AB

24' : 20231+4048
GRF 15

24' : 20231+4037
TDT2228

25' : 20232+4052
CIA 46

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ALI1142

30' : 20254+4014
MLR 1

32' : 20278+4036
TDT2294

34' : 20248+4009
HO 278

35' : 20221+4042
ES 1676

36' : 20274+4107
TDT2288

36' : 20283+4038
TDT2306

37' : 20255+4006
D 22AB

38' : 20253+4003
MLB 22

39' : 20257+4004
TOR 25AB

41' : 20244+4002
MLB 21

46' : 20264+4125
A 292

47' : 20210+4041
TDT2199

48' : 20254+4129
COU2642

49' : 20283+4113
TDT2305

51' : 20296+4021
STN 50

52' : 20256+4132
COU2643

52' : 20207+4031
TDT2193

52' : 20283+4005
COU2538

53' : 20295+4100
HJ 1523



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

20251+4042 TDT 2253

 
 
20h 25m 06.74s +40° 42' 14.9" P.A. 239.00 sep 2.4 mag 11.74,12.37
 
 
Coord 2000 20251+4042 Discov num TDT2253 Comp Coord arcsec 2000 20 25 06.74 +40 42 14.9
Date first 1991 Date last 1991 Obs 1
Pa first 239 Pa last 238.7 P.A. Now (θ) 238.7°
Sep first 2.4 Sep last 2.44 Sep. Now (ρ) 2.44"
Mag pri 11.74 Mag sec 12.37 delta mag (ΔM) 0.63 Spectral class
Pri motion ra +009 Sec motion ra +009
Pri motion dec +002 Sec motion dec +002
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Cygnus Tycho2 3156-00956-1 Gaia DR2 2067645497367221504
 
 
WDS 20251+4042 TDT 2253 : 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
20251+4042 TDT2253 1991 1 239 2.4 11.74 12.37 202506.74+404214.9

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

 
 
WDS 20251+4042 TDT 2253 : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 20251+4042 TDT 2253 : MEASURES
 
 
No records found.

 
 
WDS 20251+4042 : VIRTUAL EYEPIECE
 
 

20251+4042 TDT2253A mag 11.74 20251+4042 TDT2253B sep 2.0 P.A. 231.30 mag 12.37 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 20251+4042 : ALADIN DSS IMAGE @ 20h 25m 06.74s +40° 42' 14.9"
 
 
 
 
WDS 20251+4042 TDT 2253 : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

20251+4042 TDT2253 distance=1' 20264+4029 MLB1087 distance=20' 20232+4046 ES 1677 distance=23' 20231+4047 J 787CD distance=23' 20231+4047 J 787AB distance=24' 20231+4047 J 787AC distance=24' 20231+4047 J 787AD distance=24' 20231+4048 GRF 15 distance=24' 20231+4037 TDT2228 distance=24' 20232+4052 CIA 46 distance=25' 20259+4019 ALI1142 distance=26' 20254+4014 MLR 1 distance=30' 20278+4036 TDT2294 distance=32' 20248+4009 HO 278 distance=34' 20221+4042 ES 1676 distance=35' 20274+4107 TDT2288 distance=36' 20283+4038 TDT2306 distance=36' 20255+4006 D 22AB distance=37' 20255+4006 D 22AC distance=37' 20255+4006 POP 224AD distance=37' 20253+4003 MLB 22 distance=38' 20257+4004 TOR 25AB distance=39' 20257+4004 POP 199AC distance=39' 20244+4002 MLB 21 distance=41' 20222+4015 BU 665A,BC (Sadr) distance=43' 20222+4015 BU 665BC,D distance=45' 20222+4015 BU 665BC distance=45' 20264+4125 A 292 distance=46' 20210+4041 TDT2199 distance=47' 20254+4129 COU2642 distance=48' 20283+4113 TDT2305 distance=49' 20296+4021 STN 50 distance=51' 20256+4132 COU2643 distance=52' 20207+4031 TDT2193 distance=52' 20283+4005 COU2538 distance=52' 20295+4100 HJ 1523 distance=53' 20280+3958 TDT2299 distance=56' 20204+4021 TDT2186 distance=58' 20294+4011 ALV 6 distance=59' 20299+4022 HJ 1525AB distance=59' 20299+4022 HJ 1525AC distance=59' 20272+3949 ES 1976 distance=59' 20272+3948 SEI1127 distance=60' 20215+4127 TDT2203 distance=62' 20212+4128 A 287 distance=64' 20205+4127 LI 4 distance=66' 20205+4122 LI 5AB distance=66' 20205+4122 FAB 15AC distance=66' 20238+4146 COU2641 distance=66' 20197+4108 STTA205 distance=67' 20215+3950 SEI1103 distance=67' 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 20251+4042 TDT2253 239 2.4 1
Show 20264+4029 MLB1087 98 9.5 20
Show 20232+4046 ES 1677 270 7.4 23
Show 20231+4047 J 787 CD 292 25.3 23
Show 20231+4047 J 787 AB 165 2.6 24
Show 20231+4047 J 787 AC 112 9.5 24
Show 20231+4047 J 787 AD 293 15.8 24
Show 20231+4048 GRF 15 139 199.3 24
Show 20231+4037 TDT2228 242 0.4 24
Show 20232+4052 CIA 46 14 0.0 25
Show 20259+4019 ALI1142 56 12.1 26
Show 20254+4014 MLR 1 213 0.4 30
Show 20278+4036 TDT2294 310 2.2 32
Show 20248+4009 HO 278 70 0.1 34
Show 20221+4042 ES 1676 285 2.4 35
Show 20274+4107 TDT2288 181 2.5 36
Show 20283+4038 TDT2306 156 1.1 36
Show 20255+4006 D 22 AB 163 2.9 37
Show 20255+4006 D 22 AC 114 18.1 37
Show 20255+4006 POP 224 AD 98 71.2 37
Show 20253+4003 MLB 22 227 6.2 38
Show 20257+4004 TOR 25 AB 191 4.7 39
Show 20257+4004 POP 199 AC 245 59.6 39
Show 20244+4002 MLB 21 15 8.8 41
Show Sadr 20222+4015 BU 665 A,BC 197 147.1 43
Show 20222+4015 BU 665 BC,D 131 41.0 45
Show 20222+4015 BU 665 BC 302 1.9 45
Show 20264+4125 A 292 134 2.1 46
Show 20210+4041 TDT2199 122 0.8 47
Show 20254+4129 COU2642 321 0.7 48
Show 20283+4113 TDT2305 227 0.7 49
Show 20296+4021 STN 50 170 6.3 51
Show 20256+4132 COU2643 108 0.5 52
Show 20207+4031 TDT2193 288 1.2 52
Show 20283+4005 COU2538 31 1.0 52
Show 20295+4100 HJ 1523 340 12.0 53
Show 20280+3958 TDT2299 8 0.5 56
Show 20204+4021 TDT2186 349 0.5 58
Show 20294+4011 ALV 6 259 0.6 59
Show 20299+4022 HJ 1525 AB 234 9.2 59
Show 20299+4022 HJ 1525 AC 39 17.1 59
Show 20272+3949 ES 1976 79 3.8 59
Show 20272+3948 SEI1127 116 26.3 60
Show 20215+4127 TDT2203 225 0.7 62
Show 20212+4128 A 287 132 1.5 64
Show 20205+4127 LI 4 333 8.9 66
Show 20205+4122 LI 5 AB 145 8.8 66
Show 20205+4122 FAB 15 AC 203 19.5 66
Show 20238+4146 COU2641 279 1.0 66
Show 20197+4108 STTA205 321 45.5 67
Show 20215+3950 SEI1103 223 17.0 67

 
 
WDS 20251+4042 : COMPONENTS
 
 
  A
B pa=231.3°
sep=2.03"
 
 
20251+4042 A
 
 
Componente originario normalizzato AB Coord arcsec 2000 202506.74+404214.9 Mag 11.74 PmRA 9.00
PmDE 2.0 Tycho2 3156-00956-1
Tycho2
Tycho2 3156-00956-1 Pflag RAmdeg 306.27808719 DEmdeg 40.70408628
PmRA 9.0 PmDE 2.3 E RAmdeg 70 E DEmdeg 65
E pmRA 1.9 E pmDE 1.8 EpRAm 1974.53 EpDEm 1974.53
Num 3 Q RAmdeg 0.6 Q DEmdeg 0.3 Q pmRA 0.6
Q pmDE 0.3 BTmag 12.040 E BTmag 0.123 VTmag 11.833
E VTmag 0.165 Prox 999 TYC HIP
CCDM RAdeg 306.27806000 DEdeg 40.70408083 EpRA 1990 1.68
EpDE 1990 1.62 E RAdeg 76.6 E DEdeg 72.1 Posflg
Corr 0.1
 
 
20251+4042 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 202506.60+404213.6 Mag 12.37 PmRA 9.00
PmDE 2.0 Calc delta mag 0.63 Calc coord yes