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Current system
20356+3510
STF 2702
HD 196344


Nearby doubles
2' : 20355+3509
POP 7

2' : 20355+3510
POP 6

4' : 20355+3507
SEI1183

14' : 20359+3458
J 793

15' : 20344+3510
TDT2383

15' : 20353+3525
ES 2250

16' : 20344+3513
J 1143

20' : 20355+3450
ES 2307

21' : 20340+3505
SEI1169

22' : 20339+3515
WRH 34AB

30' : 20337+3452
TDT2373

32' : 20380+3523
TDT2437

33' : 20346+3541
TDT2386

35' : 20329+3515
ES 2306

36' : 20340+3441
STT 408

37' : 20386+3509
POP 8

38' : 20373+3541
ES 2251

39' : 20356+3432
J 792

46' : 20361+3426
ES 2308

47' : 20364+3555
TDT2414

47' : 20318+3517
SEI1152

49' : 20315+3517
CRB 135

50' : 20356+3559
TDT2401

51' : 20350+3419
J 791AB

54' : 20391+3543
SEI1205

55' : 20389+3546
TDT2450



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.

20356+3510 STF 2702 (HD 196344)

 
 
20h 35m 34.94s +35° 10' 10.8" P.A. 208.00 sep 3.1 mag 8.70,8.99 Sp A0
 
 
Coord 2000 20356+3510 Discov num STF2702 Comp Coord arcsec 2000 20 35 34.94 +35 10 10.8
Date first 1828 Date last 2018 Obs 52
Pa first 205 Pa last 208.4 P.A. Now (θ) 208.4°
Sep first 2.6 Sep last 3.14 Sep. Now (ρ) 3.14"
Mag pri 8.70 Mag sec 8.99 delta mag (ΔM) 0.29 Spectral class A0 (white)
Pri motion ra +009 Sec motion ra +008
Pri motion dec +000 Sec motion dec +001
Notes T (Parallax indicates physical)
rPM=0.157 (< 0.3, Physical double)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 196344 Constellation Cygnus SAO 70241 Tycho2 2694-00849-1
Gaia DR2 1864452282533028096 HD 196344 GC 28675
 
 
WDS 20356+3510 STF 2702 (HD 196344) : 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
20356+3510 STF2702 1999 49 205 2.8 8.70 8.99 A0 D 203534.94+351010.8
20356+3510 STF2702 2009 51 206 3.1 8.70 8.99 A0 D 203534.94+351010.8
20356+3510 STF2702 2011 54 205 3.1 8.70 8.99 A0 D 203534.94+351010.8
20356+3510 STF2702 2015 49 205 3.2 8.70 8.99 A0 203534.94+351010.8
20356+3510 STF2702 2018 50 206 3.2 8.70 8.99 A0 203534.94+351010.8

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

 
 
WDS 20356+3510 STF 2702 (HD 196344) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 20356+3510 STF 2702 (HD 196344) : MEASURES
 
 
No records found.

 
 
WDS 20356+3510 (HD 196344) : VIRTUAL EYEPIECE
 
 

20356+3510 STF2702A mag 8.7 Sp A0 20356+3510 STF2702B sep 3.0 P.A. 203.80 mag 8.99 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 20356+3510 (HD 196344) : ALADIN DSS IMAGE @ 20h 35m 34.94s +35° 10' 10.8"
 
 
 
 
WDS 20356+3510 STF 2702 (HD 196344) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

20356+3510 STF2702 distance=0' 20355+3509 POP 7 distance=2' 20355+3510 POP 6 distance=2' 20355+3507 SEI1183 distance=4' 20359+3458 J 793 distance=14' 20344+3510 TDT2383 distance=15' 20353+3525 ES 2250 distance=15' 20344+3513 J 1143 distance=16' 20355+3450 ES 2307 distance=20' 20340+3505 SEI1169 distance=21' 20339+3515 WRH 34AB distance=22' 20339+3515 BU 1490AC distance=22' 20337+3452 TDT2373 distance=30' 20380+3523 TDT2437 distance=32' 20346+3541 TDT2386 distance=33' 20329+3515 ES 2306 distance=35' 20340+3441 STT 408 distance=36' 20386+3509 POP 8 distance=37' 20373+3541 ES 2251 distance=38' 20356+3432 J 792 distance=39' 20361+3426 ES 2308 distance=46' 20364+3555 TDT2414 distance=47' 20318+3517 SEI1152 distance=47' 20315+3517 CRB 135 distance=49' 20356+3559 TDT2401 distance=50' 20350+3419 J 791AB distance=51' 20350+3419 J 791AC distance=51' 20391+3543 SEI1205 distance=54' 20389+3546 TDT2450 distance=55' 20376+3559 LSC 92 distance=55' 20394+3541 TOB 194 distance=57' 20403+3508 TDT2460 distance=58' 20309+3459 SEI1145 distance=59' 20381+3601 HJ 1553 distance=60' 20322+3552 GRV 350 distance=60' 20307+3521 HU 760BC distance=61' 20307+3521 HJ 1526A,BC distance=62' 20306+3452 ES 2305 distance=64' 20306+3525 COU1961 distance=64' 20321+3558 COU2133AB distance=65' 20321+3558 COU2133Aa,Ab distance=65' 20305+3454 ES 2304 distance=65' 20359+3615 GII 52Aa,Ab distance=66' 20359+3615 GII 52AB distance=66' 20359+3617 TDT2405 distance=67' 20365+3616 SEI1190 distance=67' 20411+3516 COU1963AB distance=68' 20411+3516 COU1963AB,C distance=68' 20401+3551 SEI1211 distance=69' 20305+3540 SEI1142 distance=70' 20316+3420 TOK 338 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 20356+3510 STF2702 208 3.1
Show 20355+3509 POP 7 66 7.9 2
Show 20355+3510 POP 6 219 6.5 2
Show 20355+3507 SEI1183 -1 -1.0 4
Show 20359+3458 J 793 67 2.9 14
Show 20344+3510 TDT2383 124 0.6 15
Show 20353+3525 ES 2250 121 5.5 15
Show 20344+3513 J 1143 271 4.1 16
Show 20355+3450 ES 2307 90 3.3 20
Show 20340+3505 SEI1169 262 20.8 21
Show 20339+3515 WRH 34 AB 278 0.3 22
Show 20339+3515 BU 1490 AC 210 115.1 22
Show 20337+3452 TDT2373 67 0.8 30
Show 20380+3523 TDT2437 73 0.4 32
Show 20346+3541 TDT2386 203 0.5 33
Show 20329+3515 ES 2306 328 7.4 35
Show 20340+3441 STT 408 193 1.6 36
Show 20386+3509 POP 8 195 3.7 37
Show 20373+3541 ES 2251 196 3.6 38
Show 20356+3432 J 792 321 3.4 39
Show 20361+3426 ES 2308 246 7.5 46
Show 20364+3555 TDT2414 222 0.9 47
Show 20318+3517 SEI1152 316 25.3 47
Show 20315+3517 CRB 135 4 16.6 49
Show 20356+3559 TDT2401 358 0.4 50
Show 20350+3419 J 791 AB 181 3.7 51
Show 20350+3419 J 791 AC 229 18.2 51
Show 20391+3543 SEI1205 74 20.4 54
Show 20389+3546 TDT2450 250 1.9 55
Show 20376+3559 LSC 92 105 0.1 55
Show 20394+3541 TOB 194 306 18.8 57
Show 20403+3508 TDT2460 121 2.1 58
Show 20309+3459 SEI1145 88 7.7 59
Show 20381+3601 HJ 1553 192 11.5 60
Show 20322+3552 GRV 350 159 36.5 60
Show 20307+3521 HU 760 BC 67 0.3 61
Show 20307+3521 HJ 1526 A,BC 148 8.8 62
Show 20306+3452 ES 2305 286 6.7 64
Show 20306+3525 COU1961 205 0.4 64
Show 20321+3558 COU2133 AB 29 2.4 65
Show 20321+3558 COU2133 Aa,Ab 119 0.1 65
Show 20305+3454 ES 2304 39 3.6 65
Show 20359+3615 GII 52 Aa,Ab 217 0.4 66
Show 20359+3615 GII 52 AB 344 3.9 66
Show 20359+3617 TDT2405 355 1.1 67
Show 20365+3616 SEI1190 153 2.4 67
Show 20411+3516 COU1963 AB 0.2 68
Show 20411+3516 COU1963 AB,C 41 1.8 68
Show 20401+3551 SEI1211 149 20.4 69
Show 20305+3540 SEI1142 78 21.7 70
Show 20316+3420 TOK 338 2 94.2 71

 
 
WDS 20356+3510 : COMPONENTS
 
 
  A
B pa=203.8°
sep=3.02"
 
 
20356+3510 A
 
 
Componente originario normalizzato AB Name HD 196344 Coord arcsec 2000 203534.94+351010.8 Mag 8.7
Spectral class A0 (white) PmRA 9.00 PmDE 0.0 Tycho2 2694-00849-1
Tycho2
Tycho2 2694-00849-1 Pflag RAmdeg 308.89557984 DEmdeg 35.16967773
PmRA 15.6 PmDE 6.4 E RAmdeg 7 E DEmdeg 6
E pmRA 3.8 E pmDE 3.6 EpRAm 1991.53 EpDEm 1991.69
Num 2 Q RAmdeg Q DEmdeg Q pmRA
Q pmDE BTmag 8.767 E BTmag 0.017 VTmag 8.695
E VTmag 0.013 Prox 32 TYC T HIP
CCDM RAdeg 308.89553556 DEdeg 35.16966306 EpRA 1990 1.57
EpDE 1990 1.73 E RAdeg 6.6 E DEdeg 6.2 Posflg D
Corr 0.0
CCDM
Ccdm 20356+3510 RComp Comp A Note1
Note2 Discov num DRAs -1.17 DDEs 9.1
R dRAs 10 Year Theta Rho
Obs 2 Vmag 9.3 Sp A0 PmNote *
PmRA 6 PmDE 1 Dm number +34 4091 Cat1 BD
Name2 70241 Cat2 SAO HD 196344 M HD
ADS BDS A14045 M ADS BDS N IDS IDS 20317N3449A
HIC
 
 
20356+3510 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 203534.84+351008.0 Mag 8.99 PmRA 8.00
PmDE 1.0 SAO 70241 Tycho2 2694-00849-2 HD 196344
GC 28675 DM BD+34 4091 Calc delta mag 0.29 Calc coord yes
Tycho2
Tycho2 2694-00849-2 Pflag RAmdeg 308.89511555 DEmdeg 35.16884889
PmRA 12.6 PmDE -2.1 E RAmdeg 8 E DEmdeg 8
E pmRA 3.9 E pmDE 3.7 EpRAm 1991.52 EpDEm 1991.71
Num 2 Q RAmdeg Q DEmdeg Q pmRA
Q pmDE BTmag 9.128 E BTmag 0.017 VTmag 8.991
E VTmag 0.015 Prox 32 TYC T HIP
CCDM RAdeg 308.89507972 DEdeg 35.16885361 EpRA 1990 1.58
EpDE 1990 1.77 E RAdeg 8.4 E DEdeg 7.7 Posflg D
Corr 0.0
SAO
SAO 70241 DelFlag RA1950 PmRA1950 0.0005
DE1950 PmDE1950 0 Vmag 7.6 SpType A0
Double code Source 70 CatNum 28675 DM BD+34 4091
DMcomp BDsup HD 196344 M HD 0
GC 28675 RA1950rad 5.38271655 DE1950rad 0.61078385 PmRA2000 0.0007
PmDE2000 -0.002
CCDM
Ccdm 20356+3510 RComp Comp B Note1
Note2 Discov num STF2702 DRAs DDEs
R dRAs Year 1831 Theta 205 Rho 3.3
Obs 15 Vmag 9.5 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A14045 M ADS BDS N IDS IDS 20317N3449B
HIC