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Doubles in session


Current system
20089+6205
STF 2652
HD 191940


Nearby doubles
16' : 20109+6211
LDS2789

17' : 20097+6220
ES 1853

19' : 20116+6205
LDS2791

20' : 20067+6214
TOR 22

22' : 20080+6225
BVD 335

24' : 20081+6227
STI 946

25' : 20073+6143
ES 1852AB

36' : 20111+6133
KPP3355

39' : 20043+6225
STI 943

41' : 20145+6152
LDS2793

43' : 20030+6215
STI 942

43' : 20129+6236
STI 954

50' : 20019+6207
TDT1923

53' : 20085+6113
TDT2015

55' : 20014+6217
MLR 13

58' : 20082+6109
MLR 502

74' : 20193+6152
STI 965

76' : 20196+6215
GUL 2

77' : 20193+6142
TDT2165

80' : 20194+6135
STI 966

81' : 20185+6122
LDS1469

82' : 20198+6235
LDS1470

83' : 20086+6328
STI 948

83' : 20001+6110
KPP4180

84' : 20207+6157
STI 968

85' : 20202+6236
HU 958



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.

20089+6205 STF 2652 (HD 191940)

 
 
20h 08m 56.80s +62° 04' 36.0" P.A. 211.00 sep 0.3 mag 7.29,7.78 Sp A0V dist. 252.53 pc (823.75 l.y.)
 
 
Coord 2000 20089+6205 Discov num STF2652 Comp Coord arcsec 2000 20 08 56.80 +62 04 36.0
Date first 1831 Date last 2009 Obs 76
Pa first 285 Pa last 211.2 P.A. Now (θ) 211.2°
Sep first 0.5 Sep last 0.313 Sep. Now (ρ) 0.313"
Mag pri 7.29 Mag sec 7.78 delta mag (ΔM) 0.49 Spectral class A0V (white)
Pri motion ra +012 Sec motion ra
Pri motion dec -019 Sec motion dec
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 191940 Constellation Draco SAO 18732 HIP 99257
Tycho2 4236-01106-1 Gaia DR2 2237927966972481792 HD 191940 GC 27995
ADS 13449 BD BD+61 1975 Distance 252.53 Distance ly 823.75
 
 
ORBITAL ELEMENTS
 
 
Period (P)495y Periastron (T)2185y Semi-major axis (a)0.495a
Eccentricity (e)0.72 Inclination (i)111.2° Longitude of periastron (ω)85.8°
Node (Ω)141.3° Notes ReferenceZir2014a
Equinox2000 Last observation2005 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 213.1 0.307
2001 212.6 0.308
2002 212.1 0.308
2003 211.6 0.308
2004 211.2 0.308
2005 210.7 0.309
2006 210.2 0.309
2007 209.8 0.309
2008 209.3 0.310
2009 208.8 0.310
2010 208.4 0.310
2011 207.9 0.311
2012 207.4 0.311
2013 207.0 0.311
2014 206.5 0.312
2015 206.1 0.312
2016 205.6 0.313
2017 205.1 0.313
2018 204.7 0.313
2019 204.2 0.314
2020 203.8 0.314
2021 203.3 0.315
2022 202.9 0.315
2023 202.4 0.315
2024 202.0 0.316
2025 201.5 0.316
2026 201.1 0.317
2027 200.6 0.317
2028 200.2 0.318
2029 199.8 0.318
2030 199.3 0.319


 
 grafico orbita
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.


 
  


wds20089%2B6205a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 20089+6205 STF 2652 (HD 191940) : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
Zir2014a orb - Zirm, H. 2014IAUDS.182....1Z
Zir2014a Inf. Circ. 182, 1, 2014
 
 
DISCOVERER
 
 
idgroup discov author
1 STF Struve, F.G.W.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20089+6205 STF2652 2005 73 207 0.3 7.29 7.78 A0V D 200856.80+620436.0
20089+6205 STF2652 2006 74 210 0.3 7.29 7.78 A0V O 200856.80+620436.0
20089+6205 STF2652 2009 75 214 0.3 7.29 7.78 A0V O 200856.80+620436.0

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

 
 
WDS 20089+6205 STF 2652 (HD 191940) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 20089+6205 STF 2652 (HD 191940) : MEASURES
 
 
No records found.

 
 
WDS 20089+6205 (HD 191940) : VIRTUAL EYEPIECE
 
 

20089+6205 STF2652A mag 7.29 Sp A0V 20089+6205 STF2652B sep 0.3 P.A. 195.80 mag 7.78 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 20089+6205 (HD 191940) : ALADIN DSS IMAGE @ 20h 08m 56.80s +62° 04' 36.0"
 
 
 
 
WDS 20089+6205 STF 2652 (HD 191940) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

20089+6205 STF2652 distance=0' 20109+6211 LDS2789 distance=16' 20097+6220 ES 1853 distance=17' 20116+6205 LDS2791 distance=19' 20067+6214 TOR 22 distance=20' 20080+6225 BVD 335 distance=22' 20081+6227 STI 946 distance=24' 20073+6143 ES 1852AB distance=25' 20073+6143 WAL 128AC distance=25' 20111+6133 KPP3355 distance=36' 20043+6225 STI 943 distance=39' 20145+6152 LDS2793 distance=41' 20030+6215 STI 942 distance=43' 20129+6236 STI 954 distance=43' 20019+6207 TDT1923 distance=50' 20085+6113 TDT2015 distance=53' 20014+6217 MLR 13 distance=55' 20082+6109 MLR 502 distance=58' 20193+6152 STI 965 distance=74' 20196+6215 GUL 2 distance=76' 20193+6142 TDT2165 distance=77' 20194+6135 STI 966 distance=80' 20185+6122 LDS1469 distance=81' 20198+6235 LDS1470 distance=82' 20086+6328 STI 948 distance=83' 20001+6110 KPP4180 distance=83' 20207+6157 STI 968 distance=84' 20202+6236 HU 958 distance=85' 19562+6154 TDT1861 distance=91' 19574+6124 HJ 2922 distance=92' 20202+6118 LDS1471 distance=92' 19579+6258 BU 9035CD distance=94' 20034+6330 STF2632 distance=94' 19573+6253 HDS2841 distance=95' 19599+6056 LDS2786AB distance=95' 19599+6056 LDS2786Aa,Ab distance=95' 20185+6313 HJ 2958 distance=96' 20010+6323 STI 940 distance=96' 19579+6258 HJ 2923AB distance=97' 19551+6211 TDT1846 distance=97' 19566+6122 ES 1851 distance=98' 19550+6214 STI 936 distance=98' 20227+6224 STI 973 distance=99' 19578+6105 TDT1879 distance=100' 20056+6342 STF2642AB distance=101' 20056+6342 STF2642AC distance=101' 20085+6024 CBL 525 distance=101' 20085+6346 STI 947 distance=102' 20052+6346 BU 470 distance=105' 19547+6240 UC 4052 distance=106' 20129+6023 HJ 2944 distance=106' 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 20089+6205 STF2652 211 0.3
Show 20109+6211 LDS2789 197 22.6 16
Show 20097+6220 ES 1853 293 4.3 17
Show 20116+6205 LDS2791 252 93.0 19
Show 20067+6214 TOR 22 316 14.9 20
Show 20080+6225 BVD 335 39 9.7 22
Show 20081+6227 STI 946 302 5.3 24
Show 20073+6143 ES 1852 AB 156 6.4 25
Show 20073+6143 WAL 128 AC 22 19.0 25
Show 20111+6133 KPP3355 150 19.0 36
Show 20043+6225 STI 943 78 13.5 39
Show 20145+6152 LDS2793 294 1.4 41
Show 20030+6215 STI 942 93 9.4 43
Show 20129+6236 STI 954 286 9.4 43
Show 20019+6207 TDT1923 141 2.5 50
Show 20085+6113 TDT2015 258 1.1 53
Show 20014+6217 MLR 13 231 0.3 55
Show 20082+6109 MLR 502 39 0.2 58
Show 20193+6152 STI 965 315 11.8 74
Show 20196+6215 GUL 2 347 0.3 76
Show 20193+6142 TDT2165 15 1.3 77
Show 20194+6135 STI 966 143 7.0 80
Show 20185+6122 LDS1469 345 9.7 81
Show 20198+6235 LDS1470 128 12.7 82
Show 20086+6328 STI 948 321 17.9 83
Show 20001+6110 KPP4180 47 1.9 83
Show 20207+6157 STI 968 87 12.9 84
Show 20202+6236 HU 958 354 0.9 85
Show 19562+6154 TDT1861 351 2.1 91
Show 19574+6124 HJ 2922 347 11.2 92
Show 20202+6118 LDS1471 142 8.4 92
Show 19579+6258 BU 9035 CD 237 47.2 94
Show 20034+6330 STF2632 299 26.2 94
Show 19573+6253 HDS2841 21 0.1 95
Show 19599+6056 LDS2786 AB 325 9.0 95
Show 19599+6056 LDS2786 Aa,Ab 280 4.0 95
Show 20185+6313 HJ 2958 316 9.5 96
Show 20010+6323 STI 940 69 14.1 96
Show 19579+6258 HJ 2923 AB 351 28.5 97
Show 19551+6211 TDT1846 268 0.5 97
Show 19566+6122 ES 1851 156 6.3 98
Show 19550+6214 STI 936 149 8.3 98
Show 20227+6224 STI 973 65 4.0 99
Show 19578+6105 TDT1879 263 2.0 100
Show 20056+6342 STF2642 AB 191 1.8 101
Show 20056+6342 STF2642 AC 34 68.6 101
Show 20085+6024 CBL 525 355 74.1 101
Show 20085+6346 STI 947 320 11.1 102
Show 20052+6346 BU 470 210 2.6 105
Show 19547+6240 UC 4052 95 85.4 106
Show 20129+6023 HJ 2944 196 25.0 106

 
 
WDS 20089+6205 : COMPONENTS
 
 
  A
B pa=195.8°
sep=0.28"
 
 
20089+6205 A
 
 
Componente originario normalizzato AB Name HD 191940 Coord arcsec 2000 200856.80+620436.0 Mag 7.29
Spectral class A0V (white) PmRA 12.00 PmDE -19.0 SAO 18732
HIP 99257 Tycho2 4236-01106-1 HD 191940 GC 27995
BD BD+61 1975
Tycho2
Tycho2 4236-01106-1 Pflag RAmdeg 302.23666945 DEmdeg 62.07661092
PmRA 11.6 PmDE -13.0 E RAmdeg 4 E DEmdeg 4
E pmRA 1.2 E pmDE 1.4 EpRAm 1991.53 EpDEm 1991.59
Num 12 Q RAmdeg 1.5 Q DEmdeg 1.0 Q pmRA 1.6
Q pmDE 0.9 BTmag 6.786 E BTmag 0.015 VTmag 6.743
E VTmag 0.010 Prox 999 TYC T HIP 99257
CCDM AB RAdeg 302.23661250 DEdeg 62.07664083 EpRA 1990 1.75
EpDE 1990 1.76 E RAdeg 3.9 E DEdeg 4.0 Posflg P
Corr 0.0
SAO
SAO 18732 DelFlag RA1950 PmRA1950 -0.0007
DE1950 PmDE1950 -0.009 Vmag 6.6 SpType A0
Double code Source 70 CatNum 27995 DM BD+61 1975
DMcomp BDsup HD 191940 M HD 0
GC 27995 RA1950rad 5.27156992 DE1950rad 1.08086093 PmRA2000 -0.0001
PmDE2000 -0.012
Hipparcos
Catalog H HIP 99257 Proxy H RAhms 20 08 56.80
DEdms +62 04 36.0 Vmag 6.74 VarFlag R Vmag H
RAdeg 302.237 DEdeg 62.0767 AstroRef A Plx 4.05
CCDM 20089+6205 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 218 Rho 0.305 HD 191940 BD BD+61 1975
CD CP Dm number +61 1975 VIred 0.03
SpType A0 R SpType Coord arcsec 2000 200856.80+620436.0
Hipparcos 2
HIP 99257 Sn 15 So 3 Nc 2
RArad 5.2750247211 DErad 1.0834422496 Plx 3.96 PmRA 8.37
PmDE -16.38 E RArad 0.39 E DErad 0.38 E Plx 0.4
E pmRA 0.46 E pmDE 0.43 Hpmag 6.7551 E Hpmag 0.0009
SHp 0.007 VA 0 BV 0.034 E BV 0.007
VI 0.05
CCDM
Ccdm 20089+6205 RComp Comp A Note1
Note2 Discov num DRAs 2.75 DDEs -24.8
R dRAs 10 Year Theta Rho
Obs 2 Vmag 7.2 Sp A0 PmNote *
PmRA -4 PmDE -21 Dm number +61 1975 Cat1 BD
Name2 +61 1170 Cat2 AGK2/3 HD 191940 M HD
ADS BDS A13449 M ADS BDS N IDS IDS 20074N6147A
HIC 99257
 
 
20089+6205 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 200856.79+620435.7 Mag 7.78 Calc delta mag 0.49
Calc coord yes
CCDM
Ccdm 20089+6205 RComp Comp B Note1
Note2 Discov num STF2652 DRAs DDEs
R dRAs Year 1958 Theta 238 Rho 0.3
Obs 99 Vmag 7.5 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A13449 M ADS BDS N IDS IDS 20074N6147B
HIC 99257