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Doubles in session


Current system
20378+6045
STF 2717 AB
HD 196988


Nearby doubles
14' : 20369+6034
MLR 505

24' : 20403+6030
TOK 679

37' : 20371+6122
SHY 780

40' : 20411+6116
SMA 119

42' : 20331+6109
MLR 504

48' : 20413+6006
KPP2292

54' : 20354+5956
SHN 246

56' : 20308+6107
HU 761

60' : 20313+6121
STI 987

60' : 20414+6138
BVD 336

64' : 20363+6148
TDT2409

66' : 20464+6102
MLB 141

70' : 20445+6136
HDS2952

73' : 20310+5953
HDS2933

74' : 20475+6031
TDT2541

75' : 20400+5933
RAO 440

76' : 20284+6015
A 733

78' : 20313+5945
A 737

83' : 20335+5929
STI 988

85' : 20453+6150
BU 1493

85' : 20313+6156
TDT2335

85' : 20466+5951
MLR 236

91' : 20330+5922
TDT2359

94' : 20289+5939
HJ 2978

95' : 20256+6018
HJ 2972

96' : 20293+5932
ES 1759AB



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.

20378+6045 STF 2717 AB (HD 196988)

 
 
20h 37m 48.12s +60° 45' 21.5" P.A. 259.00 sep 2.1 mag 7.34,9.46 Sp G3III dist. 263.16 pc (858.43 l.y.)
 
 
Coord 2000 20378+6045 Discov num STF2717 Comp AB Coord arcsec 2000 20 37 48.12 +60 45 21.5
Date first 1832 Date last 2016 Obs 29
Pa first 267 Pa last 258.5 P.A. Now (θ) 258.5°
Sep first 2.1 Sep last 2.064 Sep. Now (ρ) 2.064"
Mag pri 7.34 Mag sec 9.46 delta mag (ΔM) 2.12 Spectral class G3III (yellow)
Pri motion ra +023 Sec motion ra +023
Pri motion dec +019 Sec motion dec +019
Notes
Nature of this double is uncertain.
 
 
20378+6045 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show HD 196988 18958 20 37 48 +60 45 22 STF 2717 AB 2016 29 259 2.1 7.34 9.46 2.12 <===
Show 18958 20 37 48 +60 45 22 STF 2717 AC 2015 14 52 40.8 7.34 10.43 3.09
Triple system
3 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 196988 Constellation Cygnus SAO 18958 HIP 101794
Tycho2 4246-01820-1 Gaia DR2 2194638510560907904 HD 196988 GC 28759
BD BD+60 2142 Distance 263.16 Distance ly 858.43
 
 
WDS 20378+6045 STF 2717 AB (HD 196988) : 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
20378+6045 STF2717 AB 2002 25 259 2.0 7.34 9.46 G3III D 203748.12+604521.5
20378+6045 STF2717 AB 2012 26 259 1.8 7.34 9.46 G3III 203748.12+604521.5
20378+6045 STF2717 AB 2014 27 257 2.0 7.34 9.46 G3III 203748.12+604521.5
20378+6045 STF2717 AB 2016 28 259 2.1 7.34 9.46 G3III 203748.12+604521.5

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

 
 
WDS 20378+6045 STF 2717 AB (HD 196988) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 20378+6045 STF 2717 AB (HD 196988) : MEASURES
 
 
No records found.

 
 
WDS 20378+6045 (HD 196988) : VIRTUAL EYEPIECE
 
 

20378+6045 STF2717A mag 7.34 Sp G3III 20378+6045 STF2717B sep 1.1 P.A. 247.40 mag 9.46 20378+6045 STF2717C sep 29.7 P.A. 31.70 mag 10.43 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 20378+6045 (HD 196988) : ALADIN DSS IMAGE @ 20h 37m 48.12s +60° 45' 21.5"
 
 
 
 
WDS 20378+6045 STF 2717 AB (HD 196988) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

20378+6045 STF2717AB distance=0' 20369+6034 MLR 505 distance=14' 20403+6030 TOK 679 distance=24' 20371+6122 SHY 780 distance=37' 20411+6116 SMA 119 distance=40' 20331+6109 MLR 504 distance=42' 20413+6006 KPP2292 distance=48' 20354+5956 SHN 246 distance=54' 20308+6107 HU 761 distance=56' 20313+6121 STI 987 distance=60' 20414+6138 BVD 336 distance=60' 20363+6148 TDT2409 distance=64' 20464+6102 MLB 141 distance=66' 20445+6136 HDS2952 distance=70' 20310+5953 HDS2933 distance=73' 20475+6031 TDT2541 distance=74' 20400+5933 RAO 440 distance=75' 20284+6015 A 733 distance=76' 20313+5945 A 737 distance=78' 20335+5929 STI 988 distance=83' 20453+6150 BU 1493 distance=85' 20313+6156 TDT2335 distance=85' 20466+5951 MLR 236 distance=85' 20330+5922 TDT2359 distance=91' 20289+5939 HJ 2978 distance=94' 20256+6018 HJ 2972 distance=95' 20293+5932 ES 1759AB distance=96' 20293+5932 ES 1759AC distance=96' 20257+6011 A 731 distance=96' 20249+6027 TDT2250 distance=97' 20262+6001 STI 980 distance=97' 20405+6220 KPP4211 distance=97' 20251+6118 MLR 503 distance=99' 20366+6226 H 4 78 distance=101' 20252+6001 MLR 433 distance=104' 20520+6039 STI1001 distance=105' 20286+5924 ADP 6 distance=107' 20245+6004 TDT2243 distance=107' 20433+6226 BU 471 distance=108' 20520+6022 SKF2091 distance=108' 20234+6108 STI 974 distance=109' 20406+5858 HJ 1569 distance=109' 20351+6233 TDT2397 distance=110' 20525+6026 DAM1044 distance=110' 20234+6018 TDT2230 distance=110' 20521+6127 HU 762 distance=112' 20317+6228 BU 671 distance=112' 20258+5938 TDT2261 distance=112' 20303+6226 STI 985 distance=115' 20444+5902 KR 51 distance=115' 20454+5906 ES 2700 distance=116' 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 20378+6045 STF2717 AB 259 2.1
Show 20378+6045 STF2717 AC 52 40.8
Show 20369+6034 MLR 505 138 0.5 14
Show 20403+6030 TOK 679 63 23.9 24
Show 20371+6122 SHY 780 100 999.9 37
Show 20411+6116 SMA 119 355 14.0 40
Show 20331+6109 MLR 504 198 0.9 42
Show 20413+6006 KPP2292 68 19.3 48
Show 20354+5956 SHN 246 -1 0.4 54
Show 20308+6107 HU 761 128 0.5 56
Show 20313+6121 STI 987 36 5.4 60
Show 20414+6138 BVD 336 344 23.3 60
Show 20363+6148 TDT2409 258 0.4 64
Show 20464+6102 MLB 141 283 3.7 66
Show 20445+6136 HDS2952 345 0.2 70
Show 20310+5953 HDS2933 9 0.4 73
Show 20475+6031 TDT2541 286 0.6 74
Show 20400+5933 RAO 440 123 3.1 75
Show 20284+6015 A 733 170 1.1 76
Show 20313+5945 A 737 65 1.5 78
Show 20335+5929 STI 988 212 11.0 83
Show 20453+6150 BU 1493 103 42.4 85
Show 20313+6156 TDT2335 250 1.7 85
Show 20466+5951 MLR 236 41 1.6 85
Show 20330+5922 TDT2359 113 2.0 91
Show 20289+5939 HJ 2978 277 14.1 94
Show 20256+6018 HJ 2972 242 11.6 95
Show 20293+5932 ES 1759 AB 211 2.6 96
Show 20293+5932 ES 1759 AC 308 5.1 96
Show 20257+6011 A 731 217 2.3 96
Show 20249+6027 TDT2250 349 1.4 97
Show 20262+6001 STI 980 231 8.2 97
Show 20405+6220 KPP4211 113 1.9 97
Show 20251+6118 MLR 503 3 0.2 99
Show 20366+6226 H 4 78 128 28.5 101
Show 20252+6001 MLR 433 160 0.3 104
Show 20520+6039 STI1001 223 7.1 105
Show 20286+5924 ADP 6 159 4.4 107
Show 20245+6004 TDT2243 355 1.0 107
Show 20433+6226 BU 471 305 2.0 108
Show 20520+6022 SKF2091 292 45.4 108
Show 20234+6108 STI 974 58 7.8 109
Show 20406+5858 HJ 1569 306 3.9 109
Show 20351+6233 TDT2397 87 1.9 110
Show 20525+6026 DAM1044 45 6.8 110
Show 20234+6018 TDT2230 142 0.7 110
Show 20521+6127 HU 762 178 1.6 112
Show 20317+6228 BU 671 316 0.4 112
Show 20258+5938 TDT2261 134 2.0 112
Show 20303+6226 STI 985 167 7.6 115
Show 20444+5902 KR 51 181 1.4 115

 
 
WDS 20378+6045 : COMPONENTS
 
 
  A B
B pa=247.4°
sep=1.07"
 
C pa=31.7°
sep=29.71"
pa=32.9°
sep=30.59"
 
 
20378+6045 A
 
 
Name HD 196988 Coord arcsec 2000 203748.12+604521.5 Mag 7.34 Spectral class G3III (yellow)
PmRA 23.00 PmDE 19.0 SAO 18958 HIP 101794
Tycho2 4246-01820-1 HD 196988 GC 28759 BD BD+60 2142
Tycho2
Tycho2 4246-01820-1 Pflag P RAmdeg 309.45043399 DEmdeg 60.75599575
PmRA 23.3 PmDE 19.1 E RAmdeg 5 E DEmdeg 5
E pmRA 3.6 E pmDE 4.0 EpRAm 1991.62 EpDEm 1991.59
Num 3 Q RAmdeg 1.2 Q DEmdeg 0.8 Q pmRA 1.3
Q pmDE 0.7 BTmag 8.469 E BTmag 0.016 VTmag 7.342
E VTmag 0.011 Prox 20 TYC T HIP 101794
CCDM A RAdeg 309.45049833 DEdeg 60.75596639 EpRA 1990 1.64
EpDE 1990 1.61 E RAdeg 5.0 E DEdeg 5.3 Posflg D
Corr 0.0
SAO
SAO 18958 DelFlag RA1950 PmRA1950 0.0033
DE1950 PmDE1950 0.022 Vmag 7.1 SpType G0
Double code Source 70 CatNum 28759 DM BD+60 2142
DMcomp BDsup HD 196988 M HD 0
GC 28759 RA1950rad 5.39643529 DE1950rad 1.05731155 PmRA2000 0.0038
PmDE2000 0.019
Hipparcos
Catalog H HIP 101794 Proxy H RAhms 20 37 48.12
DEdms +60 45 21.5 Vmag 7.08 VarFlag R Vmag G
RAdeg 309.451 DEdeg 60.756 AstroRef A Plx 3.55
CCDM 20378+6045 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 259 Rho 2.032 HD 196988 BD BD+60 2142
CD CP Dm number +60 2142 VIred 0.86
SpType G0 R SpType Coord arcsec 2000 203748.12+604521.5
Hipparcos 2
HIP 101794 Sn 15 So 3 Nc 2
RArad 5.4009300366 DErad 1.0603916143 Plx 3.8 PmRA 17.07
PmDE 13.03 E RArad 0.54 E DErad 0.49 E Plx 0.58
E pmRA 0.64 E pmDE 0.54 Hpmag 7.2599 E Hpmag 0.0012
SHp 0.01 VA 0 BV 0.838 E BV 0.017
VI 0.86
CCDM
Ccdm 20378+6045 RComp Comp A Note1
Note2 Discov num DRAs 0.01 DDEs 21.1
R dRAs 10 Year Theta Rho
Obs 3 Vmag 7.2 Sp G0 PmNote *
PmRA 7 PmDE 8 Dm number +60 2142 Cat1 BD
Name2 +60 1307 Cat2 AGK2/3 HD 196988 M HD
ADS BDS A14102 M ADS BDS N IDS IDS 20357N6024A
HIC 101794
 
 
20378+6045 B
 
 
Coord arcsec 2000 203747.99+604521.1 Mag 9.46 PmRA 23.00 PmDE 19.0
Tycho2 4246-01820-2 Calc delta mag 2.12 Calc coord yes
Tycho2
Tycho2 4246-01820-2 Pflag P RAmdeg 309.45043399 DEmdeg 60.75599575
PmRA 23.3 PmDE 19.1 E RAmdeg 5 E DEmdeg 5
E pmRA 3.6 E pmDE 4.0 EpRAm 1991.62 EpDEm 1991.59
Num 3 Q RAmdeg 1.2 Q DEmdeg 0.8 Q pmRA 1.3
Q pmDE 0.7 BTmag 9.748 E BTmag 0.026 VTmag 9.456
E VTmag 0.025 Prox 20 TYC T HIP 101794
CCDM B RAdeg 309.44936694 DEdeg 60.75586694 EpRA 1990 1.68
EpDE 1990 1.58 E RAdeg 14.1 E DEdeg 16.4 Posflg D
Corr 0.0
CCDM
Ccdm 20378+6045 RComp Comp B Note1
Note2 Discov num STF2717 DRAs DDEs
R dRAs Year 1956 Theta 259 Rho 1.8
Obs 13 Vmag 9.7 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A14102 M ADS BDS N IDS IDS 20357N6024B
HIC 101794
 
 
20378+6045 C
 
 
Coord arcsec 2000 203750.25+604546.8 Mag 10.43 PmRA -22.00 PmDE -14.0
Calc delta mag 3.09 Calc coord yes
CCDM
Ccdm 20378+6045 RComp Comp C Note1
Note2 Discov num STF2717 DRAs DDEs
R dRAs Year 1956 Theta 052 Rho 42.7
Obs 5 Vmag 9.7 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A14102 M ADS BDS N IDS IDS 20357N6024C
HIC