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Doubles in session


Current system
20396+3030
STF 2711
HD 196954


Nearby doubles
16' : 20401+3044
ROE 15AB

25' : 20410+3047
TDT2470

28' : 20407+3007
TDT2467

30' : 20413+3012
ARY 28AB

30' : 20414+3049
TDS1091

34' : 20391+3103
J 1238

36' : 20412+3001
COU1173

38' : 20381+2958
A 743

39' : 20419+3054
TDT2480

40' : 20416+3000
COU1174

42' : 20381+2953
A 744

43' : 20382+3109
AG 261

43' : 20374+2958
HJ 1547

44' : 20406+2948
HO 137AB

45' : 20403+2947
STF2714

45' : 20363+3044
TDT2411

46' : 20378+2951
TDT2435

48' : 20385+2945
COU1172

48' : 20408+3115
TDT2468

49' : 20377+3112
BRT 283

49' : 20362+3010
TDT2408

49' : 20371+2953
MLB 663

50' : 20368+2955
TDT2421

53' : 20368+2951
BTN 1

54' : 20416+3117
TDT2474

58' : 20361+2955
TDT2407



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.

20396+3030 STF 2711 (HD 196954)

 
 
20h 39m 35.12s +30° 30' 14.6" P.A. 223.00 sep 2.4 mag 8.17,9.24 Sp A2.5V dist. 344.83 pc (1124.84 l.y.)
 
 
Coord 2000 20396+3030 Discov num STF2711 Comp Coord arcsec 2000 20 39 35.12 +30 30 14.6
Date first 1831 Date last 2016 Obs 35
Pa first 223 Pa last 223 P.A. Now (θ) 223°
Sep first 2.5 Sep last 2.408 Sep. Now (ρ) 2.408"
Mag pri 8.17 Mag sec 9.24 delta mag (ΔM) 1.07 Spectral class A2.5V (white)
Pri motion ra -005 Sec motion ra -005
Pri motion dec -015 Sec motion dec -015
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 196954 Constellation Cygnus SAO 70331 HIP 101951
Tycho2 2686-00454-1 Gaia DR2 1859274128220740352 HD 196954 GC 28787
ADS 14124 BD BD+29 4124 Distance 344.83 Distance ly 1124.84
 
 
WDS 20396+3030 STF 2711 (HD 196954) : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
STFA (F. Struve DD - Appendix list #1) ...................
STFB (F. Struve DD - Appendix list #2) ...................
StF1833A Ma - Struve, F.G.W. 1833MmRAS...5...13H
StF1833A +Mc cited by Herschel (MemRAS 5, 13, 1833)
StF1833B Ma - Struve, F.G.W. 1833AN.....10..389B
StF1833B cited by Bessel (AN 10, 389, 1833)
StF1837 Ma - Struve, F.G.W. 1837AN.....14...249
StF1837 Stellarum duplicium et multiplicium mensurae micrometricae...
StF1837 (Dorpat, Academiae scientiarum caesareae petropolitaneifique), 1837
StF1844A Ma - Struve, F.G.W. 1844QB43.S66.......
StF1844A cited by Smyth (Cycle of Celestial Objects 2, 1844)
StF1852A Ma - Struve, F.G.W. .
StF1852A cited by Bishop (Bishop Obs. Astron. Observations 1852)
StF1865A Ma - Struve, F.G.W. 1865AN.....64...81E
StF1865A cited by Engelmann (AN 64, 81, #1518, 1865)
StF1875A Ma - Struve, F.G.W. 1875AN.....85..323D
StF1875A cited by Doberck, 1875 (see Dob1875b,f,g,h)
StF1878 Ma - Struve, F.G.W. .
StF1878 Pulkova Observations 9, 1878
StF1878B Ma - Struve, F.G.W. 1878Obs.....2..239G
StF1878B cited by Gledhill (Obs 2, 239, 1878)
StF1880A Ma - Struve, F.G.W. 1880Obs.....3..535G
StF1880A cited by Gledhill (Obs 3, 535, 1880)
StF1906A Ma - Struve, F.G.W. 1906QB821.B972.....
StF1906A cited in BDS (Burnham Double Star Cat.), 1906
StF1906B Ma - Struve, F.G.W. 1906MmRAS..56....1L
StF1906B cited by Lewis (MemRAS 56, 1, 1906)
StF1922A Ma - Struve, F.G.W. 1922AN....216...49R
StF1922A cited by Rabe (AN 216, 49, 1922)
StF1932A Ma - Struve, F.G.W. 1932QB821.A43......
StF1932A cited in ADS (Aitken Double Star Cat.), 1932
StF2002 - - Weis, J.
StF2002 F. G. W. Struve's double stars : the Dorpat catalogue; the Pulkovo catalogue
StF2002 USNO Library : QB 821 .S8 W49 2002
StF2022 - - email note from Jan Weis: 6 July 2022
StF9999 Ma - Struve, F.G.W. ...................
StF9999 Unpublished, manuscript or reference not found.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20396+3030 STF2711 1998 32 223 2.3 8.17 9.24 A2.5V D 203935.12+303014.6
20396+3030 STF2711 2011 33 223 2.3 8.17 9.24 A2.5V D 203935.12+303014.6
20396+3030 STF2711 2016 33 223 2.4 8.17 9.24 A2.5V 203935.12+303014.6

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

 
 
WDS 20396+3030 STF 2711 (HD 196954) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 20396+3030 STF 2711 (HD 196954) : MEASURES
 
 
No records found.

 
 
WDS 20396+3030 (HD 196954) : VIRTUAL EYEPIECE
 
 

20396+3030 STF2711A mag 8.17 Sp A2.5V 20396+3030 STF2711B sep 2.3 P.A. 218.80 mag 9.24 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 20396+3030 (HD 196954) : ALADIN DSS IMAGE @ 20h 39m 35.12s +30° 30' 14.6"
 
 
 
 
WDS 20396+3030 STF 2711 (HD 196954) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

20396+3030 STF2711 distance=0' 20401+3044 TDT2457Aa,Ab distance=16' 20401+3044 ROE 15AB distance=16' 20401+3044 ROE 15AC distance=16' 20410+3047 TDT2470 distance=25' 20407+3007 TDT2467 distance=28' 20413+3012 ARY 28AB distance=30' 20413+3012 ARY 28AC distance=30' 20414+3049 TDS1091 distance=30' 20391+3103 J 1238 distance=34' 20412+3001 COU1173 distance=36' 20381+2958 A 743 distance=38' 20419+3054 TDT2480 distance=39' 20416+3000 COU1174 distance=40' 20381+2953 A 744 distance=42' 20382+3109 AG 261 distance=43' 20374+2958 HJ 1547 distance=43' 20406+2948 HO 137AB distance=44' 20406+2948 GII 290Aa,Ab distance=44' 20403+2947 STF2714 distance=45' 20363+3044 TDT2411 distance=45' 20378+2951 TDT2435 distance=46' 20385+2945 COU1172 distance=48' 20408+3115 TDT2468 distance=48' 20377+3112 BRT 283 distance=49' 20362+3010 TDT2408 distance=49' 20371+2953 MLB 663 distance=49' 20368+2955 TDT2421 distance=50' 20378+2943 A 742BC distance=52' 20378+2943 A 742A,BC distance=53' 20368+2951 BTN 1 distance=53' 20416+3117 TDT2474 distance=54' 20361+2955 TDT2407 distance=58' 20351+3031 COU1327 distance=59' 20439+3005 TDS1097 distance=61' 20422+2939 COU1175 distance=62' 20375+3134 FYM 138BD distance=67' 20375+3134 FYM 138BE distance=67' 20375+3134 FYM 138BF distance=67' 20375+3134 FYM 138BG distance=67' 20411+2925 ES 508AB distance=68' 20411+2925 ES 508AC distance=68' 20346+3009 TDT2387 distance=69' 20448+3022 AG 410 distance=69' 20375+3134 STFA 53AB distance=70' 20375+3134 STFA 53AC distance=70' 20375+3134 FYM 138AH distance=70' 20413+2922 ARY 29 distance=73' 20344+3004 TDT2384 distance=73' 20376+3138 COU1328 distance=73' 20451+3014 ES 367 distance=74' 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 20396+3030 STF2711 223 2.4
Show 20401+3044 TDT2457 Aa,Ab 139 0.9 16
Show 20401+3044 ROE 15 AB 249 7.6 16
Show 20401+3044 ROE 15 AC 257 30.4 16
Show 20410+3047 TDT2470 181 2.5 25
Show 20407+3007 TDT2467 160 0.8 28
Show 20413+3012 ARY 28 AB 332 62.8 30
Show 20413+3012 ARY 28 AC 35 102.2 30
Show 20414+3049 TDS1091 350 0.8 30
Show 20391+3103 J 1238 18 3.6 34
Show 20412+3001 COU1173 46 1.1 36
Show 20381+2958 A 743 309 1.2 38
Show 20419+3054 TDT2480 147 0.6 39
Show 20416+3000 COU1174 32 0.3 40
Show 20381+2953 A 744 272 0.7 42
Show 20382+3109 AG 261 154 4.3 43
Show 20374+2958 HJ 1547 8 17.0 43
Show 20406+2948 HO 137 AB 358 0.8 44
Show 20406+2948 GII 290 Aa,Ab 43 0.1 44
Show 20403+2947 STF2714 338 6.8 45
Show 20363+3044 TDT2411 90 0.8 45
Show 20378+2951 TDT2435 143 2.3 46
Show 20385+2945 COU1172 100 0.3 48
Show 20408+3115 TDT2468 247 1.9 48
Show 20377+3112 BRT 283 266 4.3 49
Show 20362+3010 TDT2408 177 0.4 49
Show 20371+2953 MLB 663 265 4.3 49
Show 20368+2955 TDT2421 159 0.4 50
Show 20378+2943 A 742 BC 132 1.2 52
Show 20378+2943 A 742 A,BC 343 56.8 53
Show 20368+2951 BTN 1 1 13.8 53
Show 20416+3117 TDT2474 224 1.7 54
Show 20361+2955 TDT2407 124 0.5 58
Show 20351+3031 COU1327 8 2.7 59
Show 20439+3005 TDS1097 357 0.9 61
Show 20422+2939 COU1175 138 3.5 62
Show 20375+3134 FYM 138 BD 35 41.0 67
Show 20375+3134 FYM 138 BE 29 58.4 67
Show 20375+3134 FYM 138 BF 81 38.8 67
Show 20375+3134 FYM 138 BG 83 62.5 67
Show 20411+2925 ES 508 AB 232 2.5 68
Show 20411+2925 ES 508 AC 226 18.2 68
Show 20346+3009 TDT2387 216 0.5 69
Show 20448+3022 AG 410 187 19.0 69
Show 20375+3134 STFA 53 AB 177 182.7 70
Show 20375+3134 STFA 53 AC 71.3 70
Show 20375+3134 FYM 138 AH 89 111.0 70
Show 20413+2922 ARY 29 143 119.3 73
Show 20344+3004 TDT2384 142 0.5 73
Show 20376+3138 COU1328 35 2.8 73
Show 20451+3014 ES 367 244 6.9 74

 
 
WDS 20396+3030 : COMPONENTS
 
 
  A
B pa=218.8°
sep=2.26"
 
 
20396+3030 A
 
 
Componente originario normalizzato AB Name HD 196954 Coord arcsec 2000 203935.12+303014.6 Mag 8.17
Spectral class A2.5V (white) PmRA -5.00 PmDE -15.0 SAO 70331
HIP 101951 Tycho2 2686-00454-1 HD 196954 GC 28787
ADS 14124 BD BD+29 4124
Tycho2
Tycho2 2686-00454-1 Pflag P RAmdeg 309.89632429 DEmdeg 30.50405798
PmRA -5.0 PmDE -14.5 E RAmdeg 4 E DEmdeg 4
E pmRA 2.7 E pmDE 2.6 EpRAm 1991.62 EpDEm 1991.76
Num 3 Q RAmdeg 1.0 Q DEmdeg 0.0 Q pmRA 0.9
Q pmDE 0.0 BTmag 8.329 E BTmag 0.015 VTmag 8.168
E VTmag 0.010 Prox 24 TYC T HIP 101951
CCDM A RAdeg 309.89643750 DEdeg 30.50418194 EpRA 1990 1.64
EpDE 1990 1.79 E RAdeg 4.3 E DEdeg 4.1 Posflg D
Corr 0.3
SAO
SAO 70331 DelFlag RA1950 PmRA1950 -0.001
DE1950 PmDE1950 -0.011 Vmag 8 SpType A0
Double code Source 70 CatNum 28787 DM BD+29 4124
DMcomp BDsup HD 196954 M HD 0
GC 28787 RA1950rad 5.39972631 DE1950rad 0.52930397 PmRA2000 -0.0008
PmDE2000 -0.014
Hipparcos
Catalog H HIP 101951 Proxy H RAhms 20 39 35.15
DEdms +30 30 15.1 Vmag 7.82 VarFlag R Vmag H
RAdeg 309.896 DEdeg 30.5042 AstroRef A Plx 3.01
CCDM 20396+3030 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 223 Rho 2.384 HD 196954 BD BD+29 4124
CD CP Dm number +29 4124 VIred 0.1
SpType A0 R SpType Coord arcsec 2000 203935.15+303015.1
Hipparcos 2
HIP 101951 Sn 15 So 3 Nc 2
RArad 5.4087131841 DErad 0.5323984391 Plx 2.9 PmRA -6.41
PmDE -16.61 E RArad 0.41 E DErad 0.52 E Plx 0.77
E pmRA 0.45 E pmDE 0.52 Hpmag 7.8739 E Hpmag 0.0009
SHp 0.014 VA 0 BV 0.147 E BV 0.008
VI 0.16
CCDM
Ccdm 20396+3030 RComp Comp A Note1
Note2 Discov num DRAs -0.91 DDEs 15.5
R dRAs 10 Year Theta Rho
Obs 2 Vmag 8.1 Sp A0 PmNote *
PmRA -13 PmDE -10 Dm number +29 4124 Cat1 BD
Name2 70331 Cat2 SAO HD 196954 M HD
ADS BDS A14124 M ADS BDS N IDS IDS 20355N3009A
HIC 101951
 
 
20396+3030 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 203935.01+303012.8 Mag 9.24 PmRA -5.00
PmDE -15.0 Tycho2 2686-00454-2 Calc delta mag 1.07 Calc coord yes
Tycho2
Tycho2 2686-00454-2 Pflag P RAmdeg 309.89632429 DEmdeg 30.50405798
PmRA -5.0 PmDE -14.5 E RAmdeg 4 E DEmdeg 4
E pmRA 2.7 E pmDE 2.6 EpRAm 1991.62 EpDEm 1991.76
Num 3 Q RAmdeg 1.0 Q DEmdeg 0.0 Q pmRA 0.9
Q pmDE 0.0 BTmag 9.393 E BTmag 0.017 VTmag 9.244
E VTmag 0.014 Prox 24 TYC T HIP 101951
CCDM B RAdeg 309.89591083 DEdeg 30.50370167 EpRA 1990 1.64
EpDE 1990 1.77 E RAdeg 7.4 E DEdeg 7.1 Posflg D
Corr 0.2
CCDM
Ccdm 20396+3030 RComp Comp B Note1
Note2 Discov num STF2711 DRAs DDEs
R dRAs Year 1831 Theta 223 Rho 2.4
Obs 16 Vmag 9.1 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A14124 M ADS BDS N IDS IDS 20355N3009B
HIC 101951