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Doubles in session


Current system
21018+3916
STF 2746
HD 200370


Nearby doubles
3' : 21020+3914
LV 9

17' : 21023+3931
H 4 113AB

20' : 21009+3900
SEI1365

22' : 21015+3855
SEI1371

27' : 21008+3940
SEI1364

28' : 20595+3923
SEI1357

29' : 21042+3924
SEI1389

29' : 21037+3857
TDT2720

30' : 21013+3846
ES 2057

31' : 20593+3924
TOB 207

31' : 20593+3925
SEI1353

33' : 21029+3946
SEI1379

33' : 21014+3948
SEI1370

34' : 21012+3949
SEI1369

34' : 21025+3844
SEI1374

34' : 21040+3854
TDT2723

34' : 21047+3908
SEI1393

36' : 20591+3932
TOB 205

37' : 20589+3931
SEI1348

38' : 20587+3922
BKO 478

38' : 21051+3914
ES 1987

41' : 20592+3941
SEI1351AB

41' : 21037+3842
SEI1384

42' : 20586+3856
SEI1341

43' : 20583+3904
SEI1340

43' : 20591+3944
BKO 480



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.

21018+3916 STF 2746 (HD 200370)

 
 
21h 01m 50.05s +39° 15' 38.4" P.A. 323.00 sep 1.2 mag 7.92,8.71 Sp F0 dist. 249.38 pc (813.48 l.y.)
 
 
Coord 2000 21018+3916 Discov num STF2746 Comp Coord arcsec 2000 21 01 50.05 +39 15 38.4
Date first 1830 Date last 2018 Obs 134
Pa first 276 Pa last 322.7 P.A. Now (θ) 322.7°
Sep first 0.9 Sep last 1.198 Sep. Now (ρ) 1.198"
Mag pri 7.92 Mag sec 8.71 delta mag (ΔM) 0.79 Spectral class F0 (yellow-white)
Pri motion ra -014 Sec motion ra -014
Pri motion dec -025 Sec motion dec -025
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 200370 Constellation Cygnus SAO 70808 HIP 103782
Tycho2 3168-02514-1 Gaia DR2 1872972776079781376 HD 200370 GC 29366
BD BD+38 4318 Distance 249.38 Distance ly 813.48
 
 
WDS 21018+3916 STF 2746 (HD 200370) : 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
21018+3916 STF2746 2005 126 321 1.2 7.92 8.71 F0 D 210150.05+391538.4
21018+3916 STF2746 2009 129 322 1.2 7.92 8.71 F0 D 210150.05+391538.4
21018+3916 STF2746 2011 132 322 1.2 7.92 8.71 F0 210150.05+391538.4
21018+3916 STF2746 2013 129 323 1.2 7.92 8.71 F0 210150.05+391538.4
21018+3916 STF2746 2016 131 323 1.2 7.92 8.71 F0 210150.05+391538.4
21018+3916 STF2746 2018 133 323 1.2 7.92 8.71 F0 210150.05+391538.4

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

 
 
WDS 21018+3916 STF 2746 (HD 200370) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 21018+3916 STF 2746 (HD 200370) : MEASURES
 
 
No records found.

 
 
WDS 21018+3916 (HD 200370) : VIRTUAL EYEPIECE
 
 

21018+3916 STF2746A mag 7.92 Sp F0 21018+3916 STF2746B sep 1.1 P.A. 329.50 mag 8.71 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 21018+3916 (HD 200370) : ALADIN DSS IMAGE @ 21h 01m 50.05s +39° 15' 38.4"
 
 
 
 
WDS 21018+3916 STF 2746 (HD 200370) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

21018+3916 STF2746 distance=0' 21020+3914 LV 9 distance=3' 21023+3931 H 4 113AB distance=17' 21023+3931 H 4 113AC distance=17' 21023+3931 SMY 6AE distance=17' 21023+3931 WRD 4AF distance=17' 21023+3931 SMY 6AD distance=17' 21023+3931 WRD 4AG distance=17' 21023+3931 FYM 114AI distance=17' 21023+3931 WRD 4ED distance=17' 21023+3931 WRD 4EH distance=17' 21009+3900 SEI1365 distance=20' 21015+3855 SEI1371 distance=22' 21008+3940 SEI1364 distance=27' 20595+3923 SEI1357 distance=28' 21042+3924 SEI1389 distance=29' 21037+3857 TDT2720 distance=29' 21013+3846 ES 2057 distance=30' 20593+3924 TOB 207 distance=31' 20593+3925 SEI1353 distance=31' 21029+3946 SEI1379 distance=33' 21014+3948 SEI1370 distance=33' 21012+3949 SEI1369 distance=34' 21025+3844 SEI1374 distance=34' 21040+3854 TDT2723 distance=34' 21047+3908 SEI1393 distance=34' 20591+3932 TOB 205 distance=36' 20589+3931 SEI1348 distance=37' 20587+3922 BKO 478 distance=38' 21051+3914 ES 1987 distance=38' 20592+3941 SEI1351AB distance=41' 20592+3941 TOB 206AC distance=41' 21037+3842 SEI1384 distance=41' 20586+3856 SEI1341 distance=42' 20583+3904 SEI1340 distance=43' 20591+3944 BKO 480 distance=43' 20592+3946 BKO 481 distance=44' 20580+3918 ES 1985AB distance=44' 20580+3918 SEI1338AC distance=44' 20580+3918 BKO 476BD distance=44' 20590+3945 SEI1349 distance=45' 21010+3959 A 1438 distance=45' 20587+3942 BKO 477 distance=45' 20596+3953 SEI1358 distance=46' 21031+3959 LDS2483AB distance=47' 21054+3937 CRB 137 distance=47' 20591+3950 BKO 479 distance=47' 20578+3923 BKO 475 distance=47' 21058+3929 A 2691CD distance=48' 21058+3929 A 2691AB distance=48' 21058+3929 A 2691AC distance=48' 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 21018+3916 STF2746 323 1.2
Show 21020+3914 LV 9 195 2.3 3
Show 21023+3931 H 4 113 AB 299 18.9 17
Show 21023+3931 H 4 113 AC 248 26.7 17
Show 21023+3931 SMY 6 AE 87 95.7 17
Show 21023+3931 WRD 4 AF 223 101.8 17
Show 21023+3931 SMY 6 AD 141 57.0 17
Show 21023+3931 WRD 4 AG 230 95.0 17
Show 21023+3931 FYM 114 AI 277 41.1 17
Show 21023+3931 WRD 4 ED 230 77.7 17
Show 21023+3931 WRD 4 EH 159 37.4 17
Show 21009+3900 SEI1365 263 18.4 20
Show 21015+3855 SEI1371 147 11.2 22
Show 21008+3940 SEI1364 114 12.1 27
Show 20595+3923 SEI1357 93 14.4 28
Show 21042+3924 SEI1389 61 18.2 29
Show 21037+3857 TDT2720 214 0.5 29
Show 21013+3846 ES 2057 258 5.0 30
Show 20593+3924 TOB 207 228 22.0 31
Show 20593+3925 SEI1353 113 17.5 31
Show 21029+3946 SEI1379 7 19.4 33
Show 21014+3948 SEI1370 141 20.7 33
Show 21012+3949 SEI1369 309 4.5 34
Show 21025+3844 SEI1374 104 17.0 34
Show 21040+3854 TDT2723 122 2.6 34
Show 21047+3908 SEI1393 132 25.7 34
Show 20591+3932 TOB 205 203 14.5 36
Show 20589+3931 SEI1348 295 26.4 37
Show 20587+3922 BKO 478 75 7.9 38
Show 21051+3914 ES 1987 354 7.0 38
Show 20592+3941 SEI1351 AB 256 17.5 41
Show 20592+3941 TOB 206 AC 71 38.4 41
Show 21037+3842 SEI1384 95 26.4 41
Show 20586+3856 SEI1341 209 29.5 42
Show 20583+3904 SEI1340 199 10.2 43
Show 20591+3944 BKO 480 236 11.1 43
Show 20592+3946 BKO 481 204 11.5 44
Show 20580+3918 ES 1985 AB 276 8.4 44
Show 20580+3918 SEI1338 AC 277 32.7 44
Show 20580+3918 BKO 476 BD 246 6.0 44
Show 20590+3945 SEI1349 160 27.9 45
Show 21010+3959 A 1438 257 0.3 45
Show 20587+3942 BKO 477 8 7.6 45
Show 20596+3953 SEI1358 273 30.9 46
Show 21031+3959 LDS2483 AB 41 30.6 47
Show 21054+3937 CRB 137 352 29.3 47
Show 20591+3950 BKO 479 9 12.4 47
Show 20578+3923 BKO 475 265 5.5 47
Show 21058+3929 A 2691 CD 275 6.4 48
Show 21058+3929 A 2691 AB 217 2.7 48
Show 21058+3929 A 2691 AC 313 27.4 48

 
 
WDS 21018+3916 : COMPONENTS
 
 
  A
B pa=329.5°
sep=1.11"
 
 
21018+3916 A
 
 
Componente originario normalizzato AB Name HD 200370 Coord arcsec 2000 210150.05+391538.4 Mag 7.92
Spectral class F0 (yellow-white) PmRA -14.00 PmDE -25.0 SAO 70808
HIP 103782 Tycho2 3168-02514-1 HD 200370 GC 29366
BD BD+38 4318
Tycho2
Tycho2 3168-02514-1 Pflag P RAmdeg 315.45853485 DEmdeg 39.26066152
PmRA -13.5 PmDE -24.5 E RAmdeg 5 E DEmdeg 5
E pmRA 2.1 E pmDE 1.8 EpRAm 1991.52 EpDEm 1991.62
Num 5 Q RAmdeg 1.8 Q DEmdeg 2.6 Q pmRA 1.8
Q pmDE 2.6 BTmag 8.341 E BTmag 0.015 VTmag 7.923
E VTmag 0.011 Prox 12 TYC T HIP 103782
CCDM A RAdeg 315.45864667 DEdeg 39.26065861 EpRA 1990 1.59
EpDE 1990 1.71 E RAdeg 4.7 E DEdeg 4.6 Posflg D
Corr 0.1
SAO
SAO 70808 DelFlag RA1950 PmRA1950 -0.0005
DE1950 PmDE1950 0 Vmag 7.5 SpType F0
Double code Source 70 CatNum 29366 DM BD+38 4318
DMcomp BDsup HD 200370 M HD 0
GC 29366 RA1950rad 5.49739781 DE1950rad 0.68178797 PmRA2000 -0.0002
PmDE2000 -0.003
Hipparcos
Catalog H HIP 103782 Proxy H RAhms 21 01 50.08
DEdms +39 15 38.4 Vmag 7.46 VarFlag R Vmag G
RAdeg 315.459 DEdeg 39.2607 AstroRef A Plx 5.25
CCDM 21018+3916 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 317 Rho 1.188 HD 200370 BD BD+38 4318
CD CP Dm number +38 4318 VIred 0.47
SpType F0 R SpType Coord arcsec 2000 210150.08+391538.4
Hipparcos 2
HIP 103782 Sn 15 So 3 Nc 2
RArad 5.5057921277 DErad 0.6852277599 Plx 4.01 PmRA -13.62
PmDE -19.37 E RArad 0.5 E DErad 0.53 E Plx 0.67
E pmRA 0.61 E pmDE 0.63 Hpmag 7.5659 E Hpmag 0.0009
SHp 0.011 VA 0 BV 0.402 E BV 0.015
VI 0.47
CCDM
Ccdm 21018+3916 RComp Comp A Note1
Note2 Discov num DRAs 2.06 DDEs -19.9
R dRAs 10 Year Theta Rho
Obs 2 Vmag 8.0 Sp F0 PmNote *
PmRA -6 PmDE 0 Dm number +38 4318 Cat1 BD
Name2 70808 Cat2 SAO HD 200370 M HD
ADS BDS A14558 M ADS BDS N IDS IDS 20580N3852A
HIC 103782
 
 
21018+3916 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 210150.00+391539.4 Mag 8.71 PmRA -14.00
PmDE -25.0 Tycho2 3168-02514-2 Calc delta mag 0.79 Calc coord yes
Tycho2
Tycho2 3168-02514-2 Pflag P RAmdeg 315.45853485 DEmdeg 39.26066152
PmRA -13.5 PmDE -24.5 E RAmdeg 5 E DEmdeg 5
E pmRA 2.1 E pmDE 1.8 EpRAm 1991.52 EpDEm 1991.62
Num 5 Q RAmdeg 1.8 Q DEmdeg 2.6 Q pmRA 1.8
Q pmDE 2.6 BTmag 9.121 E BTmag 0.017 VTmag 8.711
E VTmag 0.013 Prox 12 TYC HIP 103782
CCDM B RAdeg 315.45835583 DEdeg 39.26090167 EpRA 1990 1.59
EpDE 1990 1.70 E RAdeg 7.0 E DEdeg 6.7 Posflg D
Corr 0.1
CCDM
Ccdm 21018+3916 RComp Comp B Note1
Note2 Discov num STF2746 DRAs DDEs
R dRAs Year 1959 Theta 310 Rho 1.0
Obs 99 Vmag 8.6 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A14558 M ADS BDS N IDS IDS 20580N3852B
HIC 103782