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Current system
20494+4452
TDS 1103


Nearby doubles
7' : 20494+4458
GRV 384

17' : 20504+4518
SMA 121

20' : 20511+4459
LDS2459

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ES 2702

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LDS2456

32' : 20521+4438
HER 18

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COU2646

34' : 20490+4525
SMA 120

34' : 20514+4519
ARG 40

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CHN 29

35' : 20472+4427
COU2424

35' : 20504+4525
LDS5912

35' : 20509+4421
CHN 30AB

36' : 20461+4452
ES 30

38' : 20459+4448
ES 2701

40' : 20525+4430
BRT2279

43' : 20512+4415
CHN 31

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HDS2965

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STT 595AB

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SMA 122

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LDS5915

54' : 20535+4523
HDS2975

56' : 20461+4410
BRT2275



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

20494+4452 TDS 1103

 
 
20h 49m 25.98s +44° 52' 14.8" P.A. 200.00 sep 0.8 mag 11.45,12.21
 
 
Coord 2000 20494+4452 Discov num TDS1103 Comp Coord arcsec 2000 20 49 25.98 +44 52 14.8
Date first 1991 Date last 1991 Obs 1
Pa first 200 Pa last 199.6 P.A. Now (θ) 199.6°
Sep first 0.8 Sep last 0.809 Sep. Now (ρ) 0.809"
Mag pri 11.45 Mag sec 12.21 delta mag (ΔM) 0.76 Spectral class
Pri motion ra -002 Sec motion ra -002
Pri motion dec -004 Sec motion dec -004
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Cygnus Tycho2 3178-00023-1 Gaia DR2 2163213300010819712
 
 
WDS 20494+4452 TDS 1103 : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
TDS Tycho Double Star (from additional DD list) ...................
TDT Tycho Double Star (from additional DD list) ...................
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20494+4452 TDS1103 1991 1 200 0.8 11.45 12.21 204925.98+445214.8

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

 
 
WDS 20494+4452 TDS 1103 : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 20494+4452 TDS 1103 : MEASURES
 
 
No records found.

 
 
WDS 20494+4452 : VIRTUAL EYEPIECE
 
 

20494+4452 TDS1103A mag 11.45 20494+4452 TDS1103B sep 0.8 P.A. 194.20 mag 12.21 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 20494+4452 : ALADIN DSS IMAGE @ 20h 49m 25.98s +44° 52' 14.8"
 
 
 
 
WDS 20494+4452 TDS 1103 : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

20494+4452 TDS1103 distance=1' 20494+4458 GRV 384 distance=7' 20504+4518 SMA 121 distance=17' 20511+4459 LDS2459 distance=20' 20500+4521 ES 2702 distance=30' 20485+4519 LDS2456 distance=30' 20521+4438 HER 18 distance=32' 20492+4525 COU2646 distance=33' 20490+4525 SMA 120 distance=34' 20514+4519 ARG 40 distance=34' 20506+4421 CHN 29 distance=34' 20472+4427 COU2424 distance=35' 20504+4525 LDS5912 distance=35' 20509+4421 CHN 30AB distance=35' 20509+4421 CHN 30Aa,Ab distance=35' 20461+4452 ES 30 distance=36' 20459+4448 ES 2701 distance=38' 20525+4430 BRT2279 distance=40' 20512+4415 CHN 31 distance=43' 20489+4537 HDS2965 distance=46' 20473+4535 HO 280 distance=48' 20538+4443 LDS5914 distance=49' 20501+4404 STT 595AB distance=50' 20501+4404 STG 9AC distance=50' 20501+4404 FYM 92AD distance=50' 20501+4404 FYM 92AE distance=50' 20501+4404 FYM 92AF distance=50' 20532+4423 LSC 94 distance=50' 20519+4537 SMA 122 distance=52' 20542+4508 LDS5915 distance=53' 20535+4523 HDS2975 distance=54' 20461+4410 BRT2275 distance=56' 20449+4425 ES 1332 distance=57' 20549+4451 LDS2466 distance=58' 20541+4507 STT 422 distance=59' 20527+4547 TDT2597 distance=65' 20434+4501 ES 668AB distance=65' 20434+4501 ES 668AC distance=65' 20434+4501 FYM 322AD distance=65' 20440+4521 KPP3361 distance=65' 20556+4453 COU2648 distance=66' 20433+4456 ES 2699 distance=66' 20436+4514 CBL 85 distance=66' 20432+4458 BKO 159 distance=67' 20464+4551 CVR 230 distance=67' 20476+4347 CHN 28 distance=68' 20461+4353 GRV 378 distance=68' 20558+4448 ES 674 distance=68' 20528+4551 COU2647 distance=69' 20432+4431 COU2422 distance=71' 20473+4345 COU2425 distance=71' 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 20494+4452 TDS1103 200 0.8 1
Show 20494+4458 GRV 384 222 22.1 7
Show 20504+4518 SMA 121 32 11.6 17
Show 20511+4459 LDS2459 228 43.7 20
Show 20500+4521 ES 2702 348 8.6 30
Show 20485+4519 LDS2456 236 18.0 30
Show 20521+4438 HER 18 85 60.7 32
Show 20492+4525 COU2646 266 0.4 33
Show 20490+4525 SMA 120 313 4.3 34
Show 20514+4519 ARG 40 250 9.2 34
Show 20506+4421 CHN 29 52 5.3 34
Show 20472+4427 COU2424 255 0.5 35
Show 20504+4525 LDS5912 252 17.4 35
Show 20509+4421 CHN 30 AB 92 2.7 35
Show 20509+4421 CHN 30 Aa,Ab 108 0.6 35
Show 20461+4452 ES 30 57 17.1 36
Show 20459+4448 ES 2701 81 50.9 38
Show 20525+4430 BRT2279 5 4.5 40
Show 20512+4415 CHN 31 47 6.7 43
Show 20489+4537 HDS2965 282 0.1 46
Show 20473+4535 HO 280 75 11.7 48
Show 20538+4443 LDS5914 124 6.2 49
Show 20501+4404 STT 595 AB 48 55.4 50
Show 20501+4404 STG 9 AC 83 102.7 50
Show 20501+4404 FYM 92 AD 242 51.8 50
Show 20501+4404 FYM 92 AE 190 35.2 50
Show 20501+4404 FYM 92 AF 80 46.9 50
Show 20532+4423 LSC 94 183 0.3 50
Show 20519+4537 SMA 122 262 7.4 52
Show 20542+4508 LDS5915 43 18.0 53
Show 20535+4523 HDS2975 191 0.2 54
Show 20461+4410 BRT2275 10 2.8 56
Show 20449+4425 ES 1332 325 7.0 57
Show 20549+4451 LDS2466 287 4.8 58
Show 20541+4507 STT 422 332 2.6 59
Show 20527+4547 TDT2597 327 1.3 65
Show 20434+4501 ES 668 AB 68 5.2 65
Show 20434+4501 ES 668 AC 269 23.4 65
Show 20434+4501 FYM 322 AD 200 18.7 65
Show 20440+4521 KPP3361 134 2.2 65
Show 20556+4453 COU2648 21 1.3 66
Show 20433+4456 ES 2699 296 40.1 66
Show 20436+4514 CBL 85 166 17.7 66
Show 20432+4458 BKO 159 37 13.2 67
Show 20464+4551 CVR 230 7 112.9 67
Show 20476+4347 CHN 28 57 5.0 68
Show 20461+4353 GRV 378 135 35.3 68
Show 20558+4448 ES 674 94 5.6 68
Show 20528+4551 COU2647 225 0.4 69
Show 20432+4431 COU2422 236 1.3 71
Show 20473+4345 COU2425 58 0.2 71

 
 
WDS 20494+4452 : COMPONENTS
 
 
  A
B pa=194.2°
sep=0.79"
 
 
20494+4452 A
 
 
Componente originario normalizzato AB Coord arcsec 2000 204925.98+445214.8 Mag 11.45 PmRA -2.00
PmDE -4.0 Tycho2 3178-00023-1
Tycho2
Tycho2 3178-00023-1 Pflag P RAmdeg 312.35826641 DEmdeg 44.87077520
PmRA -2.3 PmDE -4.4 E RAmdeg 44 E DEmdeg 44
E pmRA 1.8 E pmDE 1.7 EpRAm 1985.63 EpDEm 1984.11
Num 3 Q RAmdeg 1.2 Q DEmdeg 0.5 Q pmRA 1.3
Q pmDE 0.5 BTmag 11.582 E BTmag 0.064 VTmag 11.450
E VTmag 0.089 Prox 8 TYC HIP
CCDM RAdeg 312.35829000 DEdeg 44.87081722 EpRA 1990 1.68
EpDE 1990 1.66 E RAdeg 45.0 E DEdeg 45.5 Posflg D
Corr 0.2
 
 
20494+4452 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 204925.96+445214.0 Mag 12.21 PmRA -2.00
PmDE -4.0 Tycho2 3178-00023-2 Calc delta mag 0.76 Calc coord yes
Tycho2
Tycho2 3178-00023-2 Pflag P RAmdeg 312.35826641 DEmdeg 44.87077520
PmRA -2.3 PmDE -4.4 E RAmdeg 44 E DEmdeg 44
E pmRA 1.8 E pmDE 1.7 EpRAm 1985.63 EpDEm 1984.11
Num 3 Q RAmdeg 1.2 Q DEmdeg 0.5 Q pmRA 1.3
Q pmDE 0.5 BTmag 12.885 E BTmag 0.225 VTmag 12.207
E VTmag 0.173 Prox 8 TYC HIP
CCDM RAdeg 312.35818389 DEdeg 44.87060556 EpRA 1990 1.69
EpDE 1990 1.66 E RAdeg 91.5 E DEdeg 93.9 Posflg D
Corr 0.2