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Current system
20311+3333
COU 1962
V2425 Cyg


Nearby doubles
6' : 20313+3337
ES 2354

14' : 20300+3333
HEI 584

15' : 20315+3347
LAF 62AB

17' : 20312+3332
J 1113

27' : 20332+3324
SEI1162

30' : 20333+3323
HJ 1535AB

34' : 20284+3327
GRV 343

34' : 20338+3336
HJ 1538

37' : 20283+3325
TDT2307

39' : 20338+3312
J 190AB

40' : 20341+3344
TDT2381

40' : 20311+3253
SKF2393

41' : 20344+3328
HEI 181

44' : 20281+3353
COU1956

45' : 20295+3254
TDT2321

45' : 20346+3334
GRV 356AB

48' : 20316+3420
TOK 338

49' : 20302+3245
J 843

50' : 20339+3258
GYL 36

50' : 20350+3323
HJ 1543

51' : 20271+3322
J 788

52' : 20270+3329
HJ 1515

53' : 20349+3358
SEI1173

54' : 20269+3329
CRB 134

54' : 20273+3357
COU1955

55' : 20334+3246
TDS1081



Selections
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Neglected List I
Neglected List II
Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

20311+3333 COU 1962 (V2425 Cyg)

 
 
20h 31m 07.72s +33° 32' 33.6" P.A. 294.00 sep 0.3 mag 9.03,9.51 Sp K0 dist. 48.85 pc (159.35 l.y.)
 
 
Coord 2000 20311+3333 Discov num COU1962 Comp Coord arcsec 2000 20 31 07.72 +33 32 33.6
Date first 1980 Date last 2014 Obs 64
Pa first 123 Pa last 293.5 P.A. Now (θ) 147.6°
Sep first 0.1 Sep last 0.261 Sep. Now (ρ) 0.088"
Mag pri 9.03 Mag sec 9.51 delta mag (ΔM) 0.48 Spectral class K0 (yellow-orange)
Pri motion ra +073 Sec motion ra
Pri motion dec +086 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Var name V2425 Cyg Constellation Cygnus HIP 101227 Tycho2 2689-00268-1
Gaia DR2 1863872427589249408 BD BD+33 3930 Distance 48.85 Distance ly 159.35
 
 
ORBITAL ELEMENTS
 
 
Period (P)20.465y± 0.067 Periastron (T)1999.128y± 0.177 Semi-major axis (a)0.199a± 0.004
Eccentricity (e)0.516± 0.013 Inclination (i)75.4°± 0.7 Longitude of periastron (ω)307.1°± 2.2
Node (Ω)116°± 0.7 Notesn ReferenceTok2021c
Equinox2000 Last observation2009 Grade2(1=Definitive, 9=Indet.)
label theta rho
2000 115.5 0.110
2001 126.4 0.119
2002 138.6 0.101
2003 157.9 0.077
2004 190.6 0.062
2005 227.2 0.070
2006 250.3 0.095
2007 263.0 0.125
2008 270.7 0.155
2009 276.0 0.183
2010 280.0 0.207
2011 283.2 0.226
2012 286.0 0.239
2013 288.6 0.245
2014 291.1 0.242
2015 293.8 0.229
2016 296.9 0.203
2017 301.5 0.160
2018 311.0 0.095
2019 28.8 0.026
2020 108.6 0.089
2021 121.5 0.120
2022 132.4 0.111
2023 147.6 0.088
2024 173.7 0.067
2025 211.4 0.064
2026 241.3 0.082
2027 257.9 0.111
2028 267.5 0.141
2029 273.8 0.170
2030 278.3 0.196


 
 grafico orbita
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.


 
  


wds20311%2B3333c.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 20311+3333 COU 1962 (V2425 Cyg) : NOTES
 
 
discov_num notes refcode
COU1962 More speckle obs needed to cover the orbit.
Malkov et al. (2012) derive dynamical, photometric, and spectroscopic
masses of 1.03 +/- 0.31, 1.82, and 0.85 Msun, respectively. Mlk2012
 
 
REFERENCES
 
 
refcode metd author reference
Mlk2012 not - Malkov, O.Yu., Tamazian, V.S., Docobo, J.A., & Chulkov, D.A. 2012A&A...546A..69M
Mlk2012 A&A 546, A69, 2012
Tok2021c orb - Tokovinin, A. 2021IAUDS.203....1S
Tok2021c Inf. Circ. 203, 1, 2021
 
 
DISCOVERER
 
 
idgroup discov author
1 COU Couteau, P.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20311+3333 COU1962 2006 55 76 0.1 9.03 9.51 K0 NOD 203107.72+333233.6
20311+3333 COU1962 2007 56 270 0.1 9.03 9.51 K0 NOD 203107.72+333233.6
20311+3333 COU1962 2008 58 93 0.2 9.03 9.51 K0 NOD 203107.72+333233.6
20311+3333 COU1962 2012 63 292 0.2 9.03 9.51 K0 NO 203107.72+333233.6
20311+3333 COU1962 2014 64 294 0.3 9.03 9.51 K0 NO 203107.72+333233.6

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

 
 
WDS 20311+3333 COU 1962 (V2425 Cyg) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 20311+3333 COU 1962 (V2425 Cyg) : MEASURES
 
 
No records found.

 
 
WDS 20311+3333 (V2425 Cyg) : VIRTUAL EYEPIECE
 
 

20311+3333 COU1962A mag 9.03 Sp K0 20311+3333 COU1962B sep 0.2 P.A. 297.60 mag 9.51 virtual eyepiece
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Pass over with the mouse cursor to display the catalog designation.
Radius:
Components only
 
 
WDS 20311+3333 (V2425 Cyg) : ALADIN DSS IMAGE @ 20h 31m 07.72s +33° 32' 33.6"
 
 
 
 
WDS 20311+3333 COU 1962 (V2425 Cyg) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

20311+3333 COU1962 distance=0' 20313+3337 ES 2354 distance=6' 20300+3333 HEI 584 distance=14' 20315+3347 LAF 62AB distance=15' 20315+3347 LAF 62AC distance=15' 20315+3347 LAF 62AD distance=15' 20315+3347 LAF 62AE distance=15' 20315+3347 LAF 62AF distance=15' 20315+3347 LAF 62AG distance=15' 20315+3347 LAF 62AH distance=15' 20315+3347 LAF 62AI distance=15' 20315+3347 LAF 62AJ distance=15' 20315+3347 LAF 62AK distance=15' 20315+3347 LAF 62AL distance=15' 20315+3347 LAF 62AM distance=15' 20315+3347 LAF 62AN distance=15' 20315+3347 LAF 62AO distance=15' 20315+3347 LAF 62AP distance=15' 20315+3347 LAF 62AQ distance=15' 20315+3347 LAF 62AR distance=15' 20315+3347 LAF 62AS distance=15' 20315+3347 LAF 62AT distance=15' 20315+3347 LAF 62AU distance=15' 20315+3347 LAF 62AV distance=15' 20315+3347 LAF 62AW distance=15' 20315+3347 LAF 62AX distance=15' 20315+3347 LAF 62AY distance=15' 20315+3347 LAF 62A,Za distance=15' 20315+3347 LAF 62A,Zb distance=15' 20315+3347 LAF 62A,Zc distance=15' 20315+3347 LAF 62A,Zd distance=15' 20315+3347 LAF 62A,Ze distance=15' 20315+3347 LAF 62A,Zf distance=15' 20315+3347 LAF 62A,Zg distance=15' 20315+3347 LAF 62A,Zh distance=15' 20315+3347 LAF 62A,Zi distance=15' 20315+3347 LAF 62A,Zj distance=15' 20315+3347 LAF 62A,Zk distance=15' 20315+3347 LAF 62A,Zl distance=15' 20315+3347 LAF 62A,Zm distance=15' 20315+3347 LAF 62A,Zn distance=15' 20315+3347 LAF 62A,Zo distance=15' 20315+3347 LAF 62A,Zp distance=15' 20315+3347 LAF 62A,Zq distance=15' 20315+3347 LAF 62A,Zr distance=15' 20312+3332 J 1113 distance=17' 20332+3324 SEI1162 distance=27' 20333+3323 RBR 30Ba,Bb distance=29' 20333+3323 HJ 1535AB distance=30' 20333+3323 HJ 1535AC distance=30' 20333+3323 HJ 1535AD distance=30' 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 20311+3333 COU1962 294 0.3
Show 20313+3337 ES 2354 313 6.7 6
Show 20300+3333 HEI 584 44 3.5 14
Show 20315+3347 LAF 62 AB 341 2.0 15
Show 20315+3347 LAF 62 AC 51 2.4 15
Show 20315+3347 LAF 62 AD 289 3.8 15
Show 20315+3347 LAF 62 AE 138 3.8 15
Show 20315+3347 LAF 62 AF 19 3.9 15
Show 20315+3347 LAF 62 AG 202 4.4 15
Show 20315+3347 LAF 62 AH 300 5.6 15
Show 20315+3347 LAF 62 AI 50 6.0 15
Show 20315+3347 LAF 62 AJ 233 6.6 15
Show 20315+3347 LAF 62 AK 156 6.7 15
Show 20315+3347 LAF 62 AL 255 6.7 15
Show 20315+3347 LAF 62 AM 10 8.0 15
Show 20315+3347 LAF 62 AN 144 8.3 15
Show 20315+3347 LAF 62 AO 72 8.3 15
Show 20315+3347 LAF 62 AP 156 8.4 15
Show 20315+3347 LAF 62 AQ 177 8.9 15
Show 20315+3347 LAF 62 AR 11 9.3 15
Show 20315+3347 LAF 62 AS 276 9.6 15
Show 20315+3347 LAF 62 AT 196 9.6 15
Show 20315+3347 LAF 62 AU 347 9.9 15
Show 20315+3347 LAF 62 AV 255 10.1 15
Show 20315+3347 LAF 62 AW 201 10.1 15
Show 20315+3347 LAF 62 AX 311 10.2 15
Show 20315+3347 LAF 62 AY 329 10.2 15
Show 20315+3347 LAF 62 A,Za 167 10.6 15
Show 20315+3347 LAF 62 A,Zb 80 10.6 15
Show 20315+3347 LAF 62 A,Zc 327 10.8 15
Show 20315+3347 LAF 62 A,Zd 58 10.8 15
Show 20315+3347 LAF 62 A,Ze 52 10.8 15
Show 20315+3347 LAF 62 A,Zf 244 11.3 15
Show 20315+3347 LAF 62 A,Zg 310 12.4 15
Show 20315+3347 LAF 62 A,Zh 15 11.7 15
Show 20315+3347 LAF 62 A,Zi 21 12.2 15
Show 20315+3347 LAF 62 A,Zj 47 12.5 15
Show 20315+3347 LAF 62 A,Zk 274 12.8 15
Show 20315+3347 LAF 62 A,Zl 128 13.1 15
Show 20315+3347 LAF 62 A,Zm 68 12.2 15
Show 20315+3347 LAF 62 A,Zn 81 13.2 15
Show 20315+3347 LAF 62 A,Zo 71 13.7 15
Show 20315+3347 LAF 62 A,Zp 66 14.4 15
Show 20315+3347 LAF 62 A,Zq 357 15.1 15
Show 20315+3347 LAF 62 A,Zr 180 15.2 15
Show 20312+3332 J 1113 55 3.1 17
Show 20332+3324 SEI1162 90 20.2 27
Show 20333+3323 RBR 30 Ba,Bb 308 0.2 29
Show 20333+3323 HJ 1535 AB 246 17.2 30
Show 20333+3323 HJ 1535 AC 194 31.9 30
Show 20333+3323 HJ 1535 AD 230 59.1 30

 
 
WDS 20311+3333 : COMPONENTS
 
 
  A
B pa=297.6°
sep=0.23"
 
 
20311+3333 A
 
 
Componente originario normalizzato AB Name V2425 Cyg Coord arcsec 2000 203107.72+333233.6 Mag 9.03
Spectral class K0 (yellow-orange) PmRA 73.00 PmDE 86.0 HIP 101227
Tycho2 2689-00268-1 BD BD+33 3930
Tycho2
Tycho2 2689-00268-1 Pflag RAmdeg 307.78236459 DEmdeg 33.54292162
PmRA 65.0 PmDE 101.8 E RAmdeg 7 E DEmdeg 6
E pmRA 1.4 E pmDE 1.4 EpRAm 1991.21 EpDEm 1991.47
Num 8 Q RAmdeg 1.1 Q DEmdeg 1.7 Q pmRA 1.1
Q pmDE 1.6 BTmag 9.418 E BTmag 0.018 VTmag 8.444
E VTmag 0.012 Prox 999 TYC T HIP 101227
CCDM AP RAdeg 307.78218306 DEdeg 33.54268806 EpRA 1990 1.61
EpDE 1990 1.74 E RAdeg 6.9 E DEdeg 6.1 Posflg P
Corr 0.1
Hipparcos
Catalog H HIP 101227 Proxy H RAhms 20 31 07.72
DEdms +33 32 33.6 Vmag 8.34 VarFlag R Vmag H
RAdeg 307.782 DEdeg 33.5427 AstroRef * Plx 22.38
CCDM 20311+3333 N CCDM M Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AP
Theta 284 Rho 0.233 HD BD BD+33 3930
CD CP Dm number +33 3930 VIred 0.85
SpType K0 R SpType Coord arcsec 2000 203107.72+333233.6
Hipparcos 2
HIP 101227 Sn 55 So 3 Nc 2
RArad 5.3718123038 DErad 0.5854300852 Plx 20.47 PmRA 66.81
PmDE 95.57 E RArad 0.65 E DErad 0.61 E Plx 0.95
E pmRA 0.86 E pmDE 0.73 Hpmag 8.4946 E Hpmag 0.0017
SHp 0.017 VA 0 BV 0.884 E BV 0.014
VI 0.89
CCDM
Ccdm 20311+3333 RComp Comp A Note1
Note2 Discov num DRAs 1.76 DDEs -26.0
R dRAs 10 Year Theta Rho
Obs 3 Vmag 8.9 Sp K0 PmNote *
PmRA 79 PmDE 88 Dm number +33 3930 Cat1 BD
Name2 +33 1959 Cat2 AGK2/3 HD M HD
ADS BDS A13950 M ADS BDS N IDS IDS 20272N3312A
HIC 101227
 
 
20311+3333 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 203107.70+333233.7 Mag 9.51 Calc delta mag 0.48
Calc coord yes
CCDM
Ccdm 20311+3333 RComp Comp B Note1
Note2 Discov num J 1113 DRAs DDEs
R dRAs Year 1915 Theta 050 Rho 2.6
Obs 1 Vmag 13.0 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A13950 M ADS BDS N IDS IDS 20272N3312B
HIC