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Current system
20456+3521
TDT 2520


Nearby doubles
9' : 20449+3524
SEI1235

10' : 20451+3529
COU1809

11' : 20452+3531
SEI1237

14' : 20462+3533
ES 2252AB

15' : 20464+3511
COU1810

21' : 20465+3504
GRV 379

23' : 20448+3542
SEI1234

26' : 20462+3546
SEI1243AB

30' : 20434+3535
ISM 5AB

32' : 20471+3545
SEI1247

32' : 20465+3550
ES 2196

32' : 20466+3452
SEI1246

32' : 20466+3451
SEI1245

34' : 20460+3554
TDT2525

39' : 20479+3456
TDT2545

39' : 20450+3600
ALI 204

41' : 20460+3601
SEI1242

43' : 20422+3510
POP 9

44' : 20489+3503
SEI1257AB

46' : 20481+3554
SEI1252

47' : 20424+3455
COU1965

47' : 20485+3550
SEI1254

47' : 20430+3555
HJ 1568

51' : 20414+3515
COU1964

52' : 20490+3451
SEI1259

52' : 20489+3449
SEI1258



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

20456+3521 TDT 2520

 
 
20h 45m 34.03s +35° 21' 14.0" P.A. 16.00 sep 0.4 mag 10.49,10.95
 
 
Coord 2000 20456+3521 Discov num TDT2520 Comp Coord arcsec 2000 20 45 34.03 +35 21 14.0
Date first 1991 Date last 1991 Obs 1
Pa first 16 Pa last 15.6 P.A. Now (θ) 15.6°
Sep first 0.4 Sep last 0.43 Sep. Now (ρ) 0.43"
Mag pri 10.49 Mag sec 10.95 delta mag (ΔM) 0.46 Spectral class
Pri motion ra -003 Sec motion ra -003
Pri motion dec -001 Sec motion dec -001
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Cygnus Tycho2 2695-02147-1 Gaia DR2 1870282030623776256
 
 
WDS 20456+3521 TDT 2520 : 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
20456+3521 TDT2520 1991 1 16 0.4 10.49 10.95 204534.03+352114.0

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

 
 
WDS 20456+3521 TDT 2520 : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 20456+3521 TDT 2520 : MEASURES
 
 
No records found.

 
 
WDS 20456+3521 : VIRTUAL EYEPIECE
 
 

20456+3521 TDT2520A mag 10.49 20456+3521 TDT2520B sep 0.4 P.A. 12.80 mag 10.95 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 20456+3521 : ALADIN DSS IMAGE @ 20h 45m 34.03s +35° 21' 14.0"
 
 
 
 
WDS 20456+3521 TDT 2520 : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

20456+3521 TDT2520 distance=0' 20449+3524 SEI1235 distance=9' 20451+3529 COU1809 distance=10' 20452+3531 SEI1237 distance=11' 20462+3533 ES 2252AB distance=14' 20462+3533 LMP 18AB,C distance=14' 20462+3533 LMP 18AB,D distance=14' 20464+3511 COU1810 distance=15' 20465+3504 GRV 379 distance=21' 20448+3542 SEI1234 distance=23' 20462+3546 SEI1243AB distance=26' 20462+3546 TDT2529Aa,Ab distance=26' 20434+3535 ISM 5AB distance=30' 20434+3535 EVS 44AC distance=30' 20434+3535 EVS 44AD distance=30' 20471+3545 SEI1247 distance=32' 20465+3550 ES 2196 distance=32' 20466+3452 SEI1246 distance=32' 20466+3451 SEI1245 distance=32' 20460+3554 TDT2525 distance=34' 20479+3456 TDT2545 distance=39' 20450+3600 ALI 204 distance=39' 20460+3601 SEI1242 distance=41' 20422+3510 POP 9 distance=43' 20489+3503 SEI1257AB distance=44' 20481+3554 SEI1252 distance=46' 20424+3455 COU1965 distance=47' 20485+3550 SEI1254 distance=47' 20430+3555 HJ 1568 distance=47' 20414+3515 COU1964 distance=51' 20490+3451 SEI1259 distance=52' 20489+3449 SEI1258 distance=52' 20435+3609 ES 2195AB distance=54' 20435+3609 ES 2195BC distance=54' 20494+3548 SEI1262 distance=55' 20499+3531 SEI1266 distance=55' 20411+3516 COU1963AB distance=56' 20411+3516 COU1963AB,C distance=56' 20418+3553 HJ 1560AB distance=56' 20418+3553 HJ 1560AC distance=56' 20501+3534 TDT2567 distance=57' 20423+3601 TDT2481 distance=57' 20444+3617 GII 53 distance=58' 20485+3608 SEI1253 distance=60' 20429+3430 SEI1225 distance=62' 20472+3422 BU 677AB distance=63' 20472+3422 BU 677AC distance=63' 20486+3424 ES 249 distance=63' 20498+3442 SEI1264 distance=65' 20403+3508 TDT2460 distance=66' 20462+3628 TDT2528 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 20456+3521 TDT2520 16 0.4
Show 20449+3524 SEI1235 77 9.4 9
Show 20451+3529 COU1809 101 0.7 10
Show 20452+3531 SEI1237 272 26.1 11
Show 20462+3533 ES 2252 AB 294 4.2 14
Show 20462+3533 LMP 18 AB,C 82 26.0 14
Show 20462+3533 LMP 18 AB,D 85 35.5 14
Show 20464+3511 COU1810 183 0.2 15
Show 20465+3504 GRV 379 162 57.1 21
Show 20448+3542 SEI1234 127 19.1 23
Show 20462+3546 SEI1243 AB 203 16.2 26
Show 20462+3546 TDT2529 Aa,Ab 218 0.6 26
Show 20434+3535 ISM 5 AB 145 0.0 30
Show 20434+3535 EVS 44 AC 96 12.9 30
Show 20434+3535 EVS 44 AD 298 14.8 30
Show 20471+3545 SEI1247 78 25.6 32
Show 20465+3550 ES 2196 70 5.6 32
Show 20466+3452 SEI1246 58 18.9 32
Show 20466+3451 SEI1245 5 23.1 32
Show 20460+3554 TDT2525 70 0.6 34
Show 20479+3456 TDT2545 195 2.5 39
Show 20450+3600 ALI 204 307 11.5 39
Show 20460+3601 SEI1242 214 23.6 41
Show 20422+3510 POP 9 342 4.5 43
Show 20489+3503 SEI1257 AB 215 17.9 44
Show 20481+3554 SEI1252 115 17.3 46
Show 20424+3455 COU1965 278 0.4 47
Show 20485+3550 SEI1254 20 22.3 47
Show 20430+3555 HJ 1568 44 11.2 47
Show 20414+3515 COU1964 130 1.0 51
Show 20490+3451 SEI1259 88 15.5 52
Show 20489+3449 SEI1258 351 25.1 52
Show 20435+3609 ES 2195 AB 4 20.7 54
Show 20435+3609 ES 2195 BC 91 1.8 54
Show 20494+3548 SEI1262 301 6.1 55
Show 20499+3531 SEI1266 179 10.5 55
Show 20411+3516 COU1963 AB 0.2 56
Show 20411+3516 COU1963 AB,C 41 1.8 56
Show 20418+3553 HJ 1560 AB 248 12.8 56
Show 20418+3553 HJ 1560 AC 74 24.3 56
Show 20501+3534 TDT2567 125 0.4 57
Show 20423+3601 TDT2481 43 0.7 57
Show 20444+3617 GII 53 358 0.3 58
Show 20485+3608 SEI1253 83 24.1 60
Show 20429+3430 SEI1225 275 17.0 62
Show 20472+3422 BU 677 AB 120 10.0 63
Show 20472+3422 BU 677 AC 211 16.8 63
Show 20486+3424 ES 249 26 7.7 63
Show 20498+3442 SEI1264 39 7.5 65
Show 20403+3508 TDT2460 121 2.1 66
Show 20462+3628 TDT2528 4 1.9 67

 
 
WDS 20456+3521 : COMPONENTS
 
 
  A
B pa=12.8°
sep=0.42"
 
 
20456+3521 A
 
 
Componente originario normalizzato AB Coord arcsec 2000 204534.03+352114.0 Mag 10.49 PmRA -3.00
PmDE -1.0 Tycho2 2695-02147-1
Tycho2
Tycho2 2695-02147-1 Pflag RAmdeg 311.39180701 DEmdeg 35.35394206
PmRA -2.9 PmDE -1.2 E RAmdeg 15 E DEmdeg 14
E pmRA 1.3 E pmDE 1.3 EpRAm 1989.09 EpDEm 1989.68
Num 8 Q RAmdeg 0.5 Q DEmdeg 0.9 Q pmRA 0.5
Q pmDE 0.8 BTmag 10.065 E BTmag 0.025 VTmag 10.025
E VTmag 0.029 Prox 349 TYC T HIP
CCDM RAdeg 311.39181361 DEdeg 35.35394583 EpRA 1990 1.61
EpDE 1990 1.69 E RAdeg 15.8 E DEdeg 15.3 Posflg P
Corr 0.2
 
 
20456+3521 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 204534.04+352114.4 Mag 10.95 PmRA -3.00
PmDE -1.0 Calc delta mag 0.46 Calc coord yes