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Current system
20490+4525
SMA 120


Nearby doubles
3' : 20492+4525
COU2646

11' : 20485+4519
LDS2456

12' : 20500+4521
ES 2702

13' : 20489+4537
HDS2965

15' : 20504+4525
LDS5912

20' : 20473+4535
HO 280

25' : 20504+4518
SMA 121

26' : 20514+4519
ARG 40

28' : 20494+4458
GRV 384

33' : 20519+4537
SMA 122

34' : 20494+4452
TDS1103

34' : 20511+4459
LDS2459

38' : 20464+4551
CVR 230

42' : 20489+4607
HJ 1581

45' : 20527+4547
TDT2597

46' : 20461+4452
ES 30

48' : 20494+4613
ES 670

48' : 20528+4551
COU2647

48' : 20535+4523
HDS2975

50' : 20459+4448
ES 2701

53' : 20440+4521
KPP3361

57' : 20542+4508
LDS5915

58' : 20527+4607
A 750

58' : 20521+4438
HER 18

59' : 20436+4514
CBL 85

61' : 20472+4427
COU2424



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

20490+4525 SMA 120

 
 
20h 48m 59.78s +45° 25' 04.4" P.A. 313.00 sep 4.3 mag 12.20,13.20
 
 
Coord 2000 20490+4525 Discov num SMA 120 Comp Coord arcsec 2000 20 48 59.78 +45 25 04.4
Date first 1921 Date last 2015 Obs 5
Pa first 314 Pa last 312.6 P.A. Now (θ) 312.6°
Sep first 3.6 Sep last 4.259 Sep. Now (ρ) 4.259"
Mag pri 12.20 Mag sec 13.20 delta mag (ΔM) 1 Spectral class
Pri motion ra +010 Sec motion ra -028
Pri motion dec -004 Sec motion dec +015
Notes
rPM=1.337
This double is not physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Cygnus Gaia DR2 2166244138178007808
 
 
WDS 20490+4525 SMA 120 : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
Sma1931 Po - Smart, W.M., Green, H.E., & Fletcher, A. 1931MNRAS..92...37S
Sma1931 MNRAS 92, 37, 1931
Sma1932 Ma - Smart, W.M. & Green, H.E. 1932MNRAS..92..207S
Sma1932 +Po MNRAS 92, 207, 1932
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20490+4525 SMA 120 2000 2 313 4.3 12.20 13.20 D 204859.78+452504.4
20490+4525 SMA 120 2003 4 312 4.3 12.20 13.20 D 204859.78+452504.4
20490+4525 SMA 120 2015 5 313 4.3 12.20 13.20 204859.78+452504.4

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

 
 
WDS 20490+4525 SMA 120 : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 20490+4525 SMA 120 : MEASURES
 
 
No records found.

 
 
WDS 20490+4525 : VIRTUAL EYEPIECE
 
 

20490+4525 SMA 120A mag 12.2 20490+4525 SMA 120B sep 3.6 P.A. 322.60 mag 13.2 virtual eyepiece
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Pass over with the mouse cursor to display the catalog designation.
Radius:
Components only
 
 
WDS 20490+4525 : ALADIN DSS IMAGE @ 20h 48m 59.78s +45° 25' 04.4"
 
 
 
 
WDS 20490+4525 SMA 120 : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

20490+4525 SMA 120 distance=0' 20492+4525 COU2646 distance=3' 20485+4519 LDS2456 distance=11' 20500+4521 ES 2702 distance=12' 20489+4537 HDS2965 distance=13' 20504+4525 LDS5912 distance=15' 20473+4535 HO 280 distance=20' 20504+4518 SMA 121 distance=25' 20514+4519 ARG 40 distance=26' 20494+4458 GRV 384 distance=28' 20519+4537 SMA 122 distance=33' 20494+4452 TDS1103 distance=34' 20511+4459 LDS2459 distance=34' 20464+4551 CVR 230 distance=38' 20489+4607 HJ 1581 distance=42' 20527+4547 TDT2597 distance=45' 20461+4452 ES 30 distance=46' 20494+4613 ES 670 distance=48' 20528+4551 COU2647 distance=48' 20535+4523 HDS2975 distance=48' 20459+4448 ES 2701 distance=50' 20440+4521 KPP3361 distance=53' 20542+4508 LDS5915 distance=57' 20527+4607 A 750 distance=58' 20521+4438 HER 18 distance=58' 20436+4514 CBL 85 distance=59' 20472+4427 COU2424 distance=61' 20541+4507 STT 422 distance=64' 20434+4501 ES 668AB distance=64' 20434+4501 ES 668AC distance=64' 20434+4501 FYM 322AD distance=64' 20427+4521 ES 1270 distance=66' 20456+4621 HDS2955 distance=67' 20508+4628 BRT2276AB distance=67' 20508+4628 FYM 314AC distance=67' 20508+4628 FYM 314AD distance=67' 20506+4421 CHN 29 distance=67' 20525+4430 BRT2279 distance=67' 20509+4421 CHN 30AB distance=67' 20509+4421 CHN 30Aa,Ab distance=67' 20538+4443 LDS5914 distance=67' 20433+4456 ES 2699 distance=67' 20432+4458 BKO 159 distance=68' 20438+4610 TDT2503 distance=71' 20501+4635 ES 671 distance=71' 20549+4451 LDS2466 distance=71' 20466+4632 KUI 101 distance=72' 20423+4549 BKO 158EH distance=73' 20423+4549 BKO 158EF distance=73' 20423+4549 BKO 158EG distance=73' 20423+4549 BKO 158EI distance=73' 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 20490+4525 SMA 120 313 4.3
Show 20492+4525 COU2646 266 0.4 3
Show 20485+4519 LDS2456 236 18.0 11
Show 20500+4521 ES 2702 348 8.6 12
Show 20489+4537 HDS2965 282 0.1 13
Show 20504+4525 LDS5912 252 17.4 15
Show 20473+4535 HO 280 75 11.7 20
Show 20504+4518 SMA 121 32 11.6 25
Show 20514+4519 ARG 40 250 9.2 26
Show 20494+4458 GRV 384 222 22.1 28
Show 20519+4537 SMA 122 262 7.4 33
Show 20494+4452 TDS1103 200 0.8 34
Show 20511+4459 LDS2459 228 43.7 34
Show 20464+4551 CVR 230 7 112.9 38
Show 20489+4607 HJ 1581 170 22.4 42
Show 20527+4547 TDT2597 327 1.3 45
Show 20461+4452 ES 30 57 17.1 46
Show 20494+4613 ES 670 81 6.5 48
Show 20528+4551 COU2647 225 0.4 48
Show 20535+4523 HDS2975 191 0.2 48
Show 20459+4448 ES 2701 81 50.9 50
Show 20440+4521 KPP3361 134 2.2 53
Show 20542+4508 LDS5915 43 18.0 57
Show 20527+4607 A 750 211 0.1 58
Show 20521+4438 HER 18 85 60.7 58
Show 20436+4514 CBL 85 166 17.7 59
Show 20472+4427 COU2424 255 0.5 61
Show 20541+4507 STT 422 332 2.6 64
Show 20434+4501 ES 668 AB 68 5.2 64
Show 20434+4501 ES 668 AC 269 23.4 64
Show 20434+4501 FYM 322 AD 200 18.7 64
Show 20427+4521 ES 1270 289 5.9 66
Show 20456+4621 HDS2955 289 0.4 67
Show 20508+4628 BRT2276 AB 254 3.7 67
Show 20508+4628 FYM 314 AC 149 9.5 67
Show 20508+4628 FYM 314 AD 86 11.2 67
Show 20506+4421 CHN 29 52 5.3 67
Show 20525+4430 BRT2279 5 4.5 67
Show 20509+4421 CHN 30 AB 92 2.7 67
Show 20509+4421 CHN 30 Aa,Ab 108 0.6 67
Show 20538+4443 LDS5914 124 6.2 67
Show 20433+4456 ES 2699 296 40.1 67
Show 20432+4458 BKO 159 37 13.2 68
Show 20438+4610 TDT2503 68 0.5 71
Show 20501+4635 ES 671 91 1.6 71
Show 20549+4451 LDS2466 287 4.8 71
Show 20466+4632 KUI 101 112 0.3 72
Show 20423+4549 BKO 158 EH 340 51.6 73
Show 20423+4549 BKO 158 EF 281 24.9 73
Show 20423+4549 BKO 158 EG 221 28.7 73
Show 20423+4549 BKO 158 EI 236 39.6 73

 
 
WDS 20490+4525 : COMPONENTS
 
 
  A
B pa=322.6°
sep=3.63"
 
 
20490+4525 A
 
 
Componente originario normalizzato AB Coord arcsec 2000 204859.78+452504.4 Mag 12.2 PmRA 10.00
PmDE -4.0
 
 
20490+4525 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 204859.57+452507.3 Mag 13.2 PmRA -28.00
PmDE 15.0 Calc delta mag 1 Calc coord yes