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Current system
20454+4011
TDT 2518


Nearby doubles
3' : 20453+4010
COU2293

5' : 20456+4014
TDT2519

13' : 20454+4023
OSO 133AB

16' : 20466+4020
ES 1982

20' : 20444+4027
TDT2510

24' : 20436+4024
DAM1256

25' : 20440+4030
SLN 85

26' : 20434+4001
BRT2272

29' : 20432+4026
COU2421

30' : 20446+4040
HJ 1573

31' : 20446+4041
HJ 1574

32' : 20426+4013
TDT2488

35' : 20481+3958
CVR 231

36' : 20484+4002
SEI1255AB

37' : 20434+3943
TDT2497

37' : 20476+4038
CNT 9

39' : 20486+4000
TOB 198

39' : 20478+3944
GRV 381

39' : 20420+4015
A 1433

40' : 20429+4036
MLB 24

40' : 20427+3947
TDT2491

41' : 20488+4024
ALI1192

43' : 20419+3956
SEI1221

44' : 20419+3953
SEI1222

46' : 20485+4041
ES 1682

47' : 20441+3927
ES 1981



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

20454+4011 TDT 2518

 
 
20h 45m 23.19s +40° 11' 13.3" P.A. 203.00 sep 0.7 mag 11.80,12.29
 
 
Coord 2000 20454+4011 Discov num TDT2518 Comp Coord arcsec 2000 20 45 23.19 +40 11 13.3
Date first 1991 Date last 1991 Obs 1
Pa first 203 Pa last 202.6 P.A. Now (θ) 202.6°
Sep first 0.7 Sep last 0.69 Sep. Now (ρ) 0.69"
Mag pri 11.80 Mag sec 12.29 delta mag (ΔM) 0.49 Spectral class
Pri motion ra -001 Sec motion ra -001
Pri motion dec -001 Sec motion dec -001
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Cygnus Tycho2 3170-00716-1 Gaia DR2 2065264371800990976
 
 
WDS 20454+4011 TDT 2518 : 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
20454+4011 TDT2518 1991 1 203 0.7 11.80 12.29 204523.19+401113.3

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

 
 
WDS 20454+4011 TDT 2518 : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 20454+4011 TDT 2518 : MEASURES
 
 
No records found.

 
 
WDS 20454+4011 : VIRTUAL EYEPIECE
 
 

20454+4011 TDT2518A mag 11.8 20454+4011 TDT2518B sep 0.7 P.A. 197.60 mag 12.29 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 20454+4011 : ALADIN DSS IMAGE @ 20h 45m 23.19s +40° 11' 13.3"
 
 
 
 
WDS 20454+4011 TDT 2518 : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

20454+4011 TDT2518 distance=0' 20453+4010 COU2293 distance=3' 20456+4014 TDT2519 distance=5' 20454+4023 OSO 133AB distance=13' 20454+4023 OSO 133AC distance=13' 20454+4023 OSO 133AD distance=13' 20454+4023 OSO 133AE distance=13' 20466+4020 ES 1982 distance=16' 20444+4027 TDT2510 distance=20' 20436+4024 DAM1256 distance=24' 20440+4030 SLN 85 distance=25' 20434+4001 BRT2272 distance=26' 20432+4026 COU2421 distance=29' 20446+4040 HJ 1573 distance=30' 20446+4041 HJ 1574 distance=31' 20426+4013 TDT2488 distance=32' 20481+3958 CVR 231 distance=35' 20484+4002 J 1237BC distance=36' 20484+4002 SEI1255AB distance=36' 20434+3943 TDT2497 distance=37' 20476+4038 CNT 9 distance=37' 20486+4000 TOB 198 distance=39' 20478+3944 GRV 381 distance=39' 20420+4015 A 1433 distance=39' 20429+4036 MLB 24 distance=40' 20427+3947 TDT2491 distance=40' 20488+4024 ALI1192 distance=41' 20419+3956 SEI1221 distance=43' 20419+3953 SEI1222 distance=44' 20485+4041 ES 1682 distance=46' 20441+3927 ES 1981 distance=47' 20438+3928 SEI1230 distance=48' 20422+4041 MLB 23 distance=48' 20490+3947 STF2731AB distance=48' 20490+3947 HO 596AC distance=48' 20490+3947 HO 596AD distance=48' 20416+3950 COU2290 distance=49' 20445+3921 HJ 1572 distance=52' 20495+4035 COU2426 distance=53' 20498+3958 SEI1267 distance=53' 20444+4103 COU2423AB distance=54' 20444+4103 GRV 375AC distance=54' 20457+3917 SEI1241 distance=55' 20405+4010 TOB 196BC distance=57' 20405+4010 SEI1214AB distance=57' 20435+3919 SEI1229 distance=58' 20413+4051 COU2419 distance=62' 20402+3953 MLB 885 distance=62' 20480+3917 A 1434AB distance=62' 20480+3917 A 1434AB,C distance=62' 20490+3925 TDT2560 distance=63' 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 20454+4011 TDT2518 203 0.7
Show 20453+4010 COU2293 201 1.1 3
Show 20456+4014 TDT2519 347 1.3 5
Show 20454+4023 OSO 133 AB 114 12.0 13
Show 20454+4023 OSO 133 AC 236 11.7 13
Show 20454+4023 OSO 133 AD 67 21.8 13
Show 20454+4023 OSO 133 AE 8 22.4 13
Show 20466+4020 ES 1982 301 3.9 16
Show 20444+4027 TDT2510 157 0.9 20
Show 20436+4024 DAM1256 106 9.6 24
Show 20440+4030 SLN 85 203 9.1 25
Show 20434+4001 BRT2272 285 5.1 26
Show 20432+4026 COU2421 110 0.3 29
Show 20446+4040 HJ 1573 274 9.8 30
Show 20446+4041 HJ 1574 278 7.4 31
Show 20426+4013 TDT2488 138 0.5 32
Show 20481+3958 CVR 231 359 9.7 35
Show 20484+4002 J 1237 BC 355 5.6 36
Show 20484+4002 SEI1255 AB 338 24.4 36
Show 20434+3943 TDT2497 317 0.5 37
Show 20476+4038 CNT 9 292 9.0 37
Show 20486+4000 TOB 198 96 21.0 39
Show 20478+3944 GRV 381 340 35.8 39
Show 20420+4015 A 1433 24 0.8 39
Show 20429+4036 MLB 24 175 5.9 40
Show 20427+3947 TDT2491 275 1.4 40
Show 20488+4024 ALI1192 2 16.5 41
Show 20419+3956 SEI1221 254 2.0 43
Show 20419+3953 SEI1222 77 25.4 44
Show 20485+4041 ES 1682 152 3.1 46
Show 20441+3927 ES 1981 310 4.5 47
Show 20438+3928 SEI1230 124 25.3 48
Show 20422+4041 MLB 23 41 7.6 48
Show 20490+3947 STF2731 AB 86 4.1 48
Show 20490+3947 HO 596 AC 178 18.0 48
Show 20490+3947 HO 596 AD 247 18.2 48
Show 20416+3950 COU2290 43 0.5 49
Show 20445+3921 HJ 1572 280 15.6 52
Show 20495+4035 COU2426 328 1.2 53
Show 20498+3958 SEI1267 308 3.1 53
Show 20444+4103 COU2423 AB 180 0.3 54
Show 20444+4103 GRV 375 AC 197 31.4 54
Show 20457+3917 SEI1241 309 7.1 55
Show 20405+4010 TOB 196 BC 32 23.4 57
Show 20405+4010 SEI1214 AB 78 20.3 57
Show 20435+3919 SEI1229 156 19.6 58
Show 20413+4051 COU2419 69 0.8 62
Show 20402+3953 MLB 885 72 1.7 62
Show 20480+3917 A 1434 AB 178 0.0 62
Show 20480+3917 A 1434 AB,C 256 2.5 62
Show 20490+3925 TDT2560 38 1.1 63

 
 
WDS 20454+4011 : COMPONENTS
 
 
  A
B pa=197.6°
sep=0.67"
 
 
20454+4011 A
 
 
Componente originario normalizzato AB Coord arcsec 2000 204523.19+401113.3 Mag 11.8 PmRA -1.00
PmDE -1.0 Tycho2 3170-00716-1
Tycho2
Tycho2 3170-00716-1 Pflag RAmdeg 311.34657068 DEmdeg 40.18693629
PmRA -0.5 PmDE -0.9 E RAmdeg 42 E DEmdeg 39
E pmRA 1.7 E pmDE 1.6 EpRAm 1984.05 EpDEm 1984.46
Num 4 Q RAmdeg 1.5 Q DEmdeg 1.2 Q pmRA 1.5
Q pmDE 1.1 BTmag 11.653 E BTmag 0.061 VTmag 11.371
E VTmag 0.077 Prox 904 TYC T HIP
CCDM RAdeg 311.34657028 DEdeg 40.18693778 EpRA 1990 1.60
EpDE 1990 1.71 E RAdeg 43.8 E DEdeg 41.4 Posflg
Corr 0.1
 
 
20454+4011 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 204523.17+401112.7 Mag 12.29 PmRA -1.00
PmDE -1.0 Calc delta mag 0.49 Calc coord yes