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Doubles in session


Current system
20397+2141
STF 2710
HD 196909


Nearby doubles
3' : 20396+2143
STF2709

20' : 20406+2156
A 2795

20' : 20407+2128
COU 127

22' : 20411+2133
HJ 922

28' : 20415+2149
GRV 368

36' : 20373+2157
MCT 11

41' : 20383+2106
TDT2441

45' : 20406+2059
TDT2465

47' : 20382+2224
HJ 1550

49' : 20423+2109
BRT2480

54' : 20433+2201
TDT2495

55' : 20364+2213
J 1178

56' : 20381+2050
COU 328

63' : 20403+2040
TDT2461

63' : 20402+2039
SCA 173

65' : 20442+2154
OSO 132

66' : 20374+2239
KPP4207

67' : 20419+2043
BU 673AB

71' : 20445+2123
BRT2483

71' : 20444+2119
A 171

72' : 20365+2044
J 3096AB

73' : 20355+2225
STJ 39

82' : 20412+2023
COU 423

84' : 20338+2125
TDS1083

84' : 20396+2018
WFC 257

84' : 20418+2259
HO 595



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.

20397+2141 STF 2710 (HD 196909)

 
 
20h 39m 39.21s +21° 41' 22.0" P.A. 163.00 sep 19.0 mag 8.27,10.10 Sp K2
 
 
Coord 2000 20397+2141 Discov num STF2710 Comp Coord arcsec 2000 20 39 39.21 +21 41 22.0
Date first 1879 Date last 2020 Obs 15
Pa first 162 Pa last 163.3 P.A. Now (θ) 163.3°
Sep first 18.5 Sep last 19.02 Sep. Now (ρ) 19.02"
Mag pri 8.27 Mag sec 10.10 delta mag (ΔM) 1.83 Spectral class K2 (yellow-orange)
Pri motion ra -009 Sec motion ra -010
Pri motion dec +000 Sec motion dec -003
Notes
rPM=0.303
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 196909 Constellation Vulpecula SAO 88971 Tycho2 1645-00951-1
Gaia DR2 1818066567005099904 HD 196909
 
 
WDS 20397+2141 STF 2710 (HD 196909) : 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
20397+2141 STF2710 2000 6 163 18.9 8.27 10.10 K2 D 203939.21+214122.0
20397+2141 STF2710 2011 7 163 18.9 8.27 10.10 K2 D 203939.21+214122.0
20397+2141 STF2710 2015 10 163 18.9 8.27 10.10 K2 203939.21+214122.0
20397+2141 STF2710 2020 15 163 19.0 8.27 10.10 K2 203939.21+214122.0

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

 
 
WDS 20397+2141 STF 2710 (HD 196909) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 20397+2141 STF 2710 (HD 196909) : MEASURES
 
 
No records found.

 
 
WDS 20397+2141 (HD 196909) : VIRTUAL EYEPIECE
 
 

20397+2141 STF2710A mag 8.27 Sp K2 20397+2141 STF2710B sep 18.9 P.A. 164.40 mag 10.1 virtual eyepiece
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Pass over with the mouse cursor to display the catalog designation.
Radius:
Components only
 
 
WDS 20397+2141 (HD 196909) : ALADIN DSS IMAGE @ 20h 39m 39.21s +21° 41' 22.0"
 
 
 
 
WDS 20397+2141 STF 2710 (HD 196909) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

20397+2141 STF2710 distance=0' 20396+2143 STF2709 distance=3' 20406+2156 A 2795 distance=20' 20407+2128 COU 127 distance=20' 20411+2133 HJ 922 distance=22' 20415+2149 GRV 368 distance=28' 20373+2157 MCT 11 distance=36' 20383+2106 TDT2441 distance=41' 20406+2059 TDT2465 distance=45' 20382+2224 HJ 1550 distance=47' 20423+2109 BRT2480 distance=49' 20433+2201 TDT2495 distance=54' 20364+2213 J 1178 distance=55' 20381+2050 COU 328 distance=56' 20403+2040 TDT2461 distance=63' 20402+2039 SCA 173 distance=63' 20442+2154 OSO 132 distance=65' 20374+2239 KPP4207 distance=66' 20419+2043 BU 673AB distance=67' 20419+2043 BU 673AC distance=67' 20445+2123 BRT2483 distance=71' 20444+2119 A 171 distance=71' 20365+2044 J 3096BC distance=72' 20365+2044 J 3096AB distance=72' 20355+2225 STJ 39 distance=73' 20412+2023 COU 423 distance=82' 20338+2125 TDS1083 distance=84' 20396+2018 WFC 257 distance=84' 20418+2259 HO 595 distance=84' 20448+2051 A 172 distance=89' 20345+2235 BRT2479 distance=90' 20336+2111 HJ 2979AB distance=90' 20336+2111 HJ 2979AC distance=90' 20336+2106 ARN 83 distance=92' 20339+2227 GRV 353 distance=93' 20433+2300 HJ 1565 distance=94' 20440+2253 GRV 374 distance=94' 20386+2007 COU 225 distance=96' 20392+2317 POU4800 distance=96' 20449+2041 J 1179 distance=97' 20425+2310 LDS6416 distance=98' 20395+2319 POU4807 distance=98' 20393+2003 J 3103 distance=98' 20461+2222 J 514 distance=98' 20447+2032 BRT2484 distance=99' 20379+2317 POU4754 distance=99' 20415+2317 BKO 838 distance=100' 20394+2321 POU4805 distance=100' 20415+2318 BKO 837 distance=100' 20418+2317 BKO 841 distance=101' 20417+2318 BKO 839 distance=102' 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 20397+2141 STF2710 163 19.0
Show 20396+2143 STF2709 295 10.2 3
Show 20406+2156 A 2795 240 0.2 20
Show 20407+2128 COU 127 48 6.1 20
Show 20411+2133 HJ 922 313 7.7 22
Show 20415+2149 GRV 368 30 78.3 28
Show 20373+2157 MCT 11 121 51.8 36
Show 20383+2106 TDT2441 89 0.6 41
Show 20406+2059 TDT2465 30 1.1 45
Show 20382+2224 HJ 1550 223 7.9 47
Show 20423+2109 BRT2480 232 4.7 49
Show 20433+2201 TDT2495 124 0.9 54
Show 20364+2213 J 1178 328 3.9 55
Show 20381+2050 COU 328 155 1.0 56
Show 20403+2040 TDT2461 356 0.5 63
Show 20402+2039 SCA 173 170 1.5 63
Show 20442+2154 OSO 132 320 10.4 65
Show 20374+2239 KPP4207 116 2.7 66
Show 20419+2043 BU 673 AB 292 3.9 67
Show 20419+2043 BU 673 AC 163 102.6 67
Show 20445+2123 BRT2483 307 3.6 71
Show 20444+2119 A 171 325 5.4 71
Show 20365+2044 J 3096 BC 10 8.5 72
Show 20365+2044 J 3096 AB 2 26.6 72
Show 20355+2225 STJ 39 246 1.2 73
Show 20412+2023 COU 423 162 0.4 82
Show 20338+2125 TDS1083 354 2.5 84
Show 20396+2018 WFC 257 317 6.7 84
Show 20418+2259 HO 595 112 17.8 84
Show 20448+2051 A 172 219 2.9 89
Show 20345+2235 BRT2479 350 5.1 90
Show 20336+2111 HJ 2979 AB 63 10.4 90
Show 20336+2111 HJ 2979 AC 354 18.9 90
Show 20336+2106 ARN 83 75 58.6 92
Show 20339+2227 GRV 353 82 19.7 93
Show 20433+2300 HJ 1565 67 16.9 94
Show 20440+2253 GRV 374 173 45.0 94
Show 20386+2007 COU 225 286 0.3 96
Show 20392+2317 POU4800 144 23.3 96
Show 20449+2041 J 1179 143 4.0 97
Show 20425+2310 LDS6416 258 10.9 98
Show 20395+2319 POU4807 191 12.5 98
Show 20393+2003 J 3103 224 5.5 98
Show 20461+2222 J 514 148 2.6 98
Show 20447+2032 BRT2484 5 2.9 99
Show 20379+2317 POU4754 66 15.1 99
Show 20415+2317 BKO 838 33 8.6 100
Show 20394+2321 POU4805 221 18.6 100
Show 20415+2318 BKO 837 241 10.8 100
Show 20418+2317 BKO 841 264 9.7 101
Show 20417+2318 BKO 839 346 8.3 102

 
 
WDS 20397+2141 : COMPONENTS
 
 
  A
B pa=164.4°
sep=18.91"
 
 
20397+2141 A
 
 
Componente originario normalizzato AB Name HD 196909 Coord arcsec 2000 203939.21+214122.0 Mag 8.27
Spectral class K2 (yellow-orange) PmRA -9.00 PmDE 0.0 SAO 88971
Tycho2 1645-00951-1 HD 196909 DM BD+21 4308
Tycho2
Tycho2 1645-00951-1 Pflag RAmdeg 309.91342851 DEmdeg 21.68946438
PmRA -8.4 PmDE -0.9 E RAmdeg 7 E DEmdeg 9
E pmRA 1.0 E pmDE 1.0 EpRAm 1990.91 EpDEm 1990.07
Num 10 Q RAmdeg 1.3 Q DEmdeg 1.0 Q pmRA 1.3
Q pmDE 1.0 BTmag 9.684 E BTmag 0.023 VTmag 8.272
E VTmag 0.013 Prox 999 TYC T HIP
CCDM RAdeg 309.91344917 DEdeg 21.68946694 EpRA 1990 1.64
EpDE 1990 1.37 E RAdeg 7.1 E DEdeg 8.5 Posflg
Corr 0.0
SAO
SAO 88971 DelFlag RA1950 PmRA1950 -0.0011
DE1950 PmDE1950 0.019 Vmag 8 SpType K2
Double code Source 35 CatNum 7848 DM BD+21 4308
DMcomp BDsup HD 196909 M HD 0
GC RA1950rad 5.39930898 DE1950rad 0.37545621 PmRA2000 -0.0011
PmDE2000 0.016
CCDM
Ccdm 20397+2141 RComp Comp A Note1
Note2 Discov num DRAs -2.81 DDEs 22.6
R dRAs 10 Year Theta Rho
Obs 2 Vmag 8.6 Sp K2 PmNote *
PmRA -2 PmDE 9 Dm number +21 4308 Cat1 BD
Name2 +21 2243 Cat2 AGK2/3 HD 196909 M HD
ADS BDS B10409 M ADS BDS N IDS IDS 20352N2120A
HIC
 
 
20397+2141 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 203939.57+214103.8 Mag 10.1 PmRA -10.00
PmDE -3.0 Calc delta mag 1.83 Calc coord yes
CCDM
Ccdm 20397+2141 RComp Comp B Note1
Note2 Discov num STF2710 DRAs DDEs
R dRAs Year 1879 Theta 163 Rho 18.7
Obs 2 Vmag 10.4 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS B10409 M ADS BDS N N IDS IDS 20352N2120B
HIC