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Doubles in session


Current system
20462+3358
STT 594 AB
Aljanah


Nearby doubles
18' : 20448+3401
GRV 376

19' : 20447+3357
ES 2311

21' : 20446+3401
TDT2511

24' : 20477+3343
NSN 736

24' : 20445+3409
HU 690

25' : 20481+3403
LDS1047

26' : 20442+3404
TDT2507

28' : 20472+3422
BU 677AB

31' : 20486+3424
ES 249

38' : 20432+3350
HDS2949

40' : 20487+3334
ES 9006

40' : 20437+3332
GRV 373

41' : 20482+3326
ES 2377

41' : 20431+3411
ES 2310

42' : 20470+3318
TDT2535

43' : 20488+3426
SEI1256

51' : 20460+3308
GYL 69

51' : 20493+3430
POP 51

52' : 20424+3405
ES 2309

52' : 20429+3430
SEI1225

53' : 20420+3349
UC 253

54' : 20504+3406
GRV 387

54' : 20466+3451
SEI1245

54' : 20466+3452
SEI1246

56' : 20503+3337
ES 2378

59' : 20493+3314
ES 31AB



Selections
Full WDS
Binocular doubles
Binary Systems
Triple Systems
Quadruple Systems
Multiple Systems
Neglected List I
Neglected List II
Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

20462+3358 STT 594 AB (Aljanah)

 
 
20h 46m 12.68s +33° 58' 12.9" P.A. 261.00 sep 79.2 mag 2.46,11.60 Sp K0III dist. 22.29 pc (72.71 l.y.)
 
 
Coord 2000 20462+3358 Discov num STT 594 Comp AB Coord arcsec 2000 20 46 12.68 +33 58 12.9
Date first 1852 Date last 2017 Obs 21
Pa first 339 Pa last 261.3 P.A. Now (θ) 261.3°
Sep first 40.7 Sep last 79.2 Sep. Now (ρ) 79.2"
Mag pri 2.46 Mag sec 11.60 delta mag (ΔM) 9.14 Spectral class K0III (yellow-orange)
Pri motion ra +356 Sec motion ra
Pri motion dec +331 Sec motion dec
Notes N U (See Notes, Proper motion indicates non-physical)
This double is not physical.
 
 
20462+3358 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 70474 20 46 13 +33 58 13 CHR 100 Aa,Ab 1991 2 350 0.0 2.46
Show Aljanah 70474 20 46 13 +33 58 13 STT 594 AB 2017 21 261 79.2 2.46 11.60 9.14 <===
Show 70474 20 46 13 +33 58 13 BU 676 AC 2017 4 269 79.0 2.46 13.40 10.94
Show 70474 20 46 13 +33 58 13 LEP 96 AD 2002 2 271 93.4 2.46 14.68 12.22
Quintuple system
4 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Common name Aljanah Constellation Cygnus SAO 70474 HIP 102488
Tycho2 2695-04139-1 HD 197989 HR 7949 GC 28959
ADS 14274 GL Gl 806.1A BD BD+33 4018 Bayer Epsilon Cygni
Bayer name Eps Cyg Flamsteed 53 Cygni Flamsteed name 53 Cyg FK5 780
Distance 22.29 Distance ly 72.71 Bayer greek ε Cyg
 
 
WDS 20462+3358 STT 594 AB (Aljanah) : NOTES
 
 
discov_num notes refcode
CHR 100 eps Cyg = 53 Cyg = Aljanah. A spectroscopic binary.
van Maanan notes a common high-proper motion companion located 1'.3 Maa1934
west and 0'.1 south of eps Cyg. The companion (photographic magnitude
~14.8) was found on two plates taken with the Mt. Wilson 60inch over
an interval of 12 years.
1991.8987: This finally confirms the discovery observation of this
component, made in 1983 (McAlister et al 1987). A number of unresolved McA1987b
observations of this very close system, dating from 1979 to 1981, were
published by Hartkopf & McAlister (1984). Hrt1984
A single lined spectroscopic binary with a period of 55 yr yields an Grf1994
estimated semi-major axis of 1.05", so the companion has only escaped
visual resolution only due to its faintness. MK III measures of the MkT2003
diameter and no loss of coherence rules out companions with dm < 5.7.
It is possible that CHR 100 is an artifact caused by wave-front Tok2010b
distortions in the dome. The star was likely observed near the zenith
and the separation of the putative companion is close to the first
diffraction ring, as typical for such artifacts.
Mk III Limb-darkened diameter 4.62 mas. MkT1991
Mk III Limb-darkened diameter 4.612 +/- 0.046 mas. MkT2003
STT 594 AB: Optical pair, based on study of relative motion of the
components using the method of apparent motion parameters. Kiy2008
AB: Rectilinear solution by Friedman et al. (2012). USN2012a
 
 
REFERENCES
 
 
refcode metd author reference
Hrt1984 Sc j Hartkopf, W.I. & McAlister, H.A. 1984PASP...96..105H
Hrt1984 PASP 96, 105, 1984
Kiy2008 - Kiyaeva, O.V., Kiselev, A.A. & Izmailov, I.S. 2008SvAL...32..405K
Kiy2008 SvAL 34, 405, 2008
Maa1934 - Maanen, A. van 1934PASP...46..296M
Maa1934 PASP 46, 296, 1934
McA1987b Sc j McAlister, H.A., Hartkopf, W.I., Hutter, D.J., & Franz, O.G. 1987AJ.....93..688M
McA1987b AJ 93, 688, 1987
MkT1991 not j Mozurkewich, D., Johnston, K.J., Simon, R.S., Bowers, P.F., Gaume, R., Hutter, 1991AJ....101.2207M
MkT1991 D.J., Colavita, M.M., Shao, M. & Pan, X.P. .
MkT1991 AJ 101, 2207, 1991 .
MkT2003 Km - Mozurkewich, D., Armstrong, J.T., Hindsley, R., Quirrenbach, A., Hummel, C.A., 2003AJ....126.2502M
MkT2003 +not Hutter, D., Johnston, K.J., Hajian, A., Elias, N.M., II, Buscher, D., & Simon, R.
MkT2003 AJ 126, 2502, 2003
Tok2010b S - Tokovinin, A. ...................
Tok2010b private communication
USN2012a lin - Friedman, E.A., Mason, B.D., & Hartkopf, W.I. 2012IAUDS.176....1F
USN2012a Inf. Circ. 176, 1, 2012
 
 
DISCOVERER
 
 
idgroup discov author
1 BU Burnham, S.W. (BU 1 - 81)
179 CHR Center for High Ang. Res. Astronomy (speckle interferometry systems)
181 LEP Lepine, S., Wallace, D., Shara, M., Moffat, A., & Niemela, V.
194 STT Struve, O.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20462+3358 STT 594 AB 2007 21 259 74.8 2.46 11.60 K0III N 204612.43+335810.0
20462+3358 STT 594 AB 2017 21 261 79.2 2.46 11.60 K0III NL U 204612.68+335812.9

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

 
 
WDS 20462+3358 STT 594 AB (Aljanah) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 20462+3358 STT 594 AB (Aljanah) : MEASURES
 
 
No records found.

 
 
WDS 20462+3358 (Aljanah) : VIRTUAL EYEPIECE
 
 

20462+3358 STT 594A mag 2.46 Sp K0III 20462+3358 CHR 100Ab 20462+3358 STT 594B sep 66.0 P.A. 259.50 mag 11.6 20462+3358 BU 676C sep 65.5 P.A. 268.80 mag 13.4 Sp M3 20462+3358 LEP 96D sep 77.5 P.A. 271.40 mag 14.68 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 20462+3358 (Aljanah) : ALADIN DSS IMAGE @ 20h 46m 12.68s +33° 58' 12.9"
 
 
 
 
WDS 20462+3358 STT 594 AB (Aljanah) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

20462+3358 STT 594AB (Aljanah) distance=0' 20448+3401 GRV 376 distance=18' 20447+3357 ES 2311 distance=19' 20446+3401 TDT2511 distance=21' 20477+3343 NSN 736 distance=24' 20445+3409 HU 690 distance=24' 20481+3403 LDS1047 distance=25' 20442+3404 TDT2507 distance=26' 20472+3422 BU 677AB distance=28' 20472+3422 BU 677AC distance=28' 20486+3424 ES 249 distance=31' 20432+3350 HDS2949 distance=38' 20487+3334 ES 9006 distance=40' 20437+3332 GRV 373 distance=40' 20482+3326 ES 2377 distance=41' 20431+3411 ES 2310 distance=41' 20470+3318 TDT2535 distance=42' 20488+3426 SEI1256 distance=43' 20460+3308 GYL 69 distance=51' 20493+3430 POP 51 distance=51' 20424+3405 ES 2309 distance=52' 20429+3430 SEI1225 distance=52' 20420+3349 UC 253 distance=53' 20504+3406 GRV 387 distance=54' 20466+3451 SEI1245 distance=54' 20466+3452 SEI1246 distance=54' 20503+3337 ES 2378 distance=56' 20493+3314 ES 31AB distance=59' 20493+3314 ES 31AC distance=59' 20489+3449 SEI1258 distance=61' 20479+3456 TDT2545 distance=62' 20498+3442 SEI1264 distance=62' 20477+3258 COU1634 distance=63' 20490+3451 SEI1259 distance=64' 20435+3302 GRV 372 distance=65' 20502+3441 SEI1269 distance=66' 20465+3504 GRV 379 distance=67' 20469+3252 ARG 93 distance=67' 20489+3503 SEI1257AB distance=73' 20464+3511 COU1810 distance=74' 20424+3455 COU1965 distance=74' 20522+3401 TDT2593 distance=75' 20407+3431 TDT2466 distance=76' 20483+3247 TDT2550 distance=76' 20410+3315 GYL 38 distance=78' 20519+3327 GYL 26AB distance=78' 20519+3327 WSI 47AC distance=78' 20452+3240 TDT2517 distance=79' 20422+3254 RAO 441 distance=82' 20520+3320 TDT2590 distance=82' 20437+3243 COU1633Aa,Ab distance=82' 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 Aljanah 20462+3358 CHR 100 Aa,Ab 350 0.0
Show Aljanah 20462+3358 STT 594 AB 261 79.2
Show Aljanah 20462+3358 BU 676 AC 269 79.0
Show Aljanah 20462+3358 LEP 96 AD 271 93.4
Show 20448+3401 GRV 376 179 65.2 18
Show 20447+3357 ES 2311 44 7.0 19
Show 20446+3401 TDT2511 239 0.6 21
Show 20477+3343 NSN 736 354 45.5 24
Show 20445+3409 HU 690 278 0.5 24
Show 20481+3403 LDS1047 7 110.2 25
Show 20442+3404 TDT2507 165 0.9 26
Show 20472+3422 BU 677 AB 120 10.0 28
Show 20472+3422 BU 677 AC 211 16.8 28
Show 20486+3424 ES 249 26 7.7 31
Show 20432+3350 HDS2949 166 0.9 38
Show 20487+3334 ES 9006 93 25.3 40
Show 20437+3332 GRV 373 178 26.2 40
Show 20482+3326 ES 2377 220 4.3 41
Show 20431+3411 ES 2310 33 4.1 41
Show 20470+3318 TDT2535 86 0.7 42
Show 20488+3426 SEI1256 279 26.3 43
Show 20460+3308 GYL 69 357 26.7 51
Show 20493+3430 POP 51 347 6.6 51
Show 20424+3405 ES 2309 168 4.1 52
Show 20429+3430 SEI1225 275 17.0 52
Show 20420+3349 UC 253 203 42.7 53
Show 20504+3406 GRV 387 254 26.4 54
Show 20466+3451 SEI1245 5 23.1 54
Show 20466+3452 SEI1246 58 18.9 54
Show 20503+3337 ES 2378 193 6.2 56
Show 20493+3314 ES 31 AB 238 13.8 59
Show 20493+3314 ES 31 AC 143 18.7 59
Show 20489+3449 SEI1258 351 25.1 61
Show 20479+3456 TDT2545 195 2.5 62
Show 20498+3442 SEI1264 39 7.5 62
Show 20477+3258 COU1634 61 0.4 63
Show 20490+3451 SEI1259 88 15.5 64
Show 20435+3302 GRV 372 109 17.3 65
Show 20502+3441 SEI1269 148 7.9 66
Show 20465+3504 GRV 379 162 57.1 67
Show 20469+3252 ARG 93 87 10.9 67
Show 20489+3503 SEI1257 AB 215 17.9 73
Show 20464+3511 COU1810 183 0.2 74
Show 20424+3455 COU1965 278 0.4 74
Show 20522+3401 TDT2593 357 2.3 75
Show 20407+3431 TDT2466 20 0.6 76
Show 20483+3247 TDT2550 132 0.9 76
Show 20410+3315 GYL 38 274 17.5 78
Show 20519+3327 GYL 26 AB 353 28.6 78
Show 20519+3327 WSI 47 AC 337 11.0 78
Show 20452+3240 TDT2517 144 1.6 79

 
 
WDS 20462+3358 : COMPONENTS
 
 
  A Ab B C
Ab pa=351.7°
sep=0.04"
 
B pa=259.5°
sep=66.02"
pa=259.5°
sep=66.03"
 
C pa=268.8°
sep=65.50"
pa=268.8°
sep=65.49"
pa=357.0°
sep=10.62"
 
D pa=271.4°
sep=77.45"
pa=271.4°
sep=77.45"
pa=318.1°
sep=18.72"
pa=285.6°
sep=12.40"
 
 
20462+3358 A
 
 
Common name Aljanah Coord arcsec 2000 204612.68+335812.9 Mag 2.46 Spectral class K0III (yellow-orange)
PmRA 356.00 PmDE 331.0 SAO 70474 HIP 102488
Tycho2 2695-04139-1 HD 197989 HR 7949 GC 28959
BD BD+33 4018 Bayer Epsilon Cygni Bayer name Eps Cyg Flamsteed 53 Cygni
Flamsteed name 53 Cyg FK5 780
Tycho2
Tycho2 2695-04139-1 Pflag RAmdeg 311.55284573 DEmdeg 33.97025353
PmRA 356.8 PmDE 328.4 E RAmdeg 3 E DEmdeg 3
E pmRA 0.4 E pmDE 0.5 EpRAm 1990.64 EpDEm 1991.07
Num 25 Q RAmdeg 1.7 Q DEmdeg 0.7 Q pmRA 1.8
Q pmDE 0.8 BTmag 3.790 E BTmag 0.014 VTmag 2.570
E VTmag 0.009 Prox 999 TYC T HIP 102488
CCDM RAdeg 311.55184722 DEdeg 33.96950833 EpRA 1990 1.64
EpDE 1990 1.83 E RAdeg 3.2 E DEdeg 3.1 Posflg
Corr 0.2
SAO
SAO 70474 DelFlag RA1950 PmRA1950 0.0285
DE1950 PmDE1950 0.329 Vmag 2.6 SpType K0
Double code Source 74 CatNum 780 DM BD+33 4018
DMcomp BDsup HD 197989 M HD 0
GC 28959 RA1950rad 5.4287861 DE1950rad 0.5896069 PmRA2000 0.0287
PmDE2000 0.328
Hipparcos
Catalog H HIP 102488 Proxy RAhms 20 46 12.43
DEdms +33 58 10.0 Vmag 2.48 VarFlag 1 R Vmag H
RAdeg 311.552 DEdeg 33.9695 AstroRef Plx 45.26
CCDM 20462+3358 N CCDM I Nsys 1 Ncomp 1
MultFlag Source Qual M HIP
Theta Rho HD 197989 BD BD+33 4018
CD CP Dm number +33 4018 VIred 1
SpType K0III R SpType Coord arcsec 2000 204612.43+335810.0
Hipparcos 2
HIP 102488 Sn 5 So 0 Nc 1
RArad 5.4376047148 DErad 0.5928788067 Plx 44.86 PmRA 355.66
PmDE 330.6 E RArad 0.07 E DErad 0.08 E Plx 0.12
E pmRA 0.08 E pmDE 0.09 Hpmag 2.6429 E Hpmag 0.0003
SHp 0.005 VA 0 BV 1.021 E BV 0.015
VI 1
CCDM
Ccdm 20462+3358 RComp Comp A Note1
Note2 Discov num DRAs 0.69 DDEs 12.9
R dRAs 10 Year Theta Rho
Obs 3 Vmag 2.6 Sp K0 PmNote *
PmRA 356 PmDE 329 Dm number +33 4018 Cat1 BD
Name2 +33 2000 Cat2 AGK2/3 HD 197989 M HD
ADS BDS A14274 M ADS BDS N IDS IDS 20422N3336A
HIC 102488
 
 
20462+3358 Ab
 
 
Coord arcsec 2000 204612.68+335812.9 Calc delta mag 2.46 Calc coord yes
 
 
20462+3358 B
 
 
Coord arcsec 2000 204607.46+335800.9 Mag 11.6 Calc delta mag 9.14 Calc coord yes
CCDM
Ccdm 20462+3358 RComp Comp B Note1
Note2 Discov num BU 676 DRAs DDEs
R dRAs Year 1959 Theta 272 Rho 54.9
Obs 15 Vmag 11.6 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A14274 M ADS BDS N IDS IDS 20422N3336B
HIC
 
 
20462+3358 C
 
 
Coord arcsec 2000 204607.42+335811.5 Mag 13.4 Spectral class M3 (red) Calc delta mag 10.94
Calc coord yes
CCDM
Ccdm 20462+3358 RComp Comp C Note1
Note2 Discov num BU 676 DRAs DDEs
R dRAs Year 1959 Theta 265 Rho 78.1
Obs 1 Vmag Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A14274 M ADS BDS N IDS IDS 20422N3336C
HIC
 
 
20462+3358 D
 
 
Coord arcsec 2000 204606.46+335814.9 Mag 14.68 PmRA 357.00 PmDE 328.0
Calc delta mag 12.22 Calc coord yes