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Doubles in session


Current system
21209+0307
BU 838
HD 203235


Nearby doubles
16' : 21214+0253
STT 435

23' : 21197+0256
CVR 893

30' : 21211+0336
NSN 5

34' : 21189+0252
HEI 407

39' : 21188+0245
BAL2051

42' : 21192+0339
J 1721

48' : 21185+0236
OSO 144

50' : 21210+0217
HEI 408AB

53' : 21242+0323
BAL2052

53' : 21242+0248
J 914

56' : 21243+0327
BAL2561

57' : 21173+0323
BAL2050

61' : 21225+0403
UC 4462

63' : 21243+0343
A 2288

67' : 21251+0330
FMR 163

67' : 21218+0202
STF2787AB

71' : 21199+0158
KPP 763

71' : 21232+0409
SKF2742

73' : 21256+0248
J 1039

74' : 21169+0347
UC 4426

75' : 21179+0407
BAL2559

78' : 21260+0312
BAL2053

86' : 21237+0422
STF2791

90' : 21242+0422
CVR 898

92' : 21267+0335
VOU 41

95' : 21266+0347
TDT2969



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.

21209+0307 BU 838 (HD 203235)

 
 
21h 20m 55.78s +03° 07' 05.6" P.A. 156.00 sep 1.6 mag 7.92,10.02 Sp F8 dist. 70.97 pc (231.5 l.y.)
 
 
Coord 2000 21209+0307 Discov num BU  838 Comp Coord arcsec 2000 21 20 55.78 +03 07 05.6
Date first 1881 Date last 2016 Obs 63
Pa first 90 Pa last 156 P.A. Now (θ) 156°
Sep first 1.3 Sep last 1.644 Sep. Now (ρ) 1.644"
Mag pri 7.92 Mag sec 10.02 delta mag (ΔM) 2.1 Spectral class F8 (yellow-white)
Pri motion ra +133 Sec motion ra +133
Pri motion dec +004 Sec motion dec +004
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 203235 Constellation Equuleus HIP 105399 Tycho2 0532-00314-1
Gaia DR2 2692691366400681216 HD 203235 ADS 14880 BD BD+02 4343
Distance 70.97 Distance ly 231.5
 
 
ORBITAL ELEMENTS
 
 
Period (P)1023.3887y± 492.068 Periastron (T)2050.7451y± 43.9035 Semi-major axis (a)5.36256a± 3.03216
Eccentricity (e)0.85848± 0.19487 Inclination (i)77.217°± 11.019 Longitude of periastron (ω)68.921°± 25.091
Node (Ω)169.101°± 10.014 Notes ReferenceIzm2019
Equinox Last observation2007 Grade5(1=Definitive, 9=Indet.)
label theta rho
2000 147.6 1.640
2001 148.0 1.639
2002 148.5 1.639
2003 148.9 1.639
2004 149.3 1.638
2005 149.7 1.637
2006 150.2 1.635
2007 150.6 1.634
2008 151.0 1.632
2009 151.5 1.629
2010 151.9 1.627
2011 152.3 1.623
2012 152.8 1.620
2013 153.2 1.616
2014 153.6 1.611
2015 154.1 1.606
2016 154.5 1.601
2017 155.0 1.594
2018 155.4 1.588
2019 155.9 1.580
2020 156.4 1.572
2021 156.8 1.563
2022 157.3 1.553
2023 157.8 1.543
2024 158.3 1.531
2025 158.8 1.518
2026 159.3 1.505
2027 159.8 1.490
2028 160.3 1.474
2029 160.8 1.456
2030 161.4 1.437


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


 
  


wds21209%2B0307b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 21209+0307 BU 838 (HD 203235) : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
Izm2019 orb u Izmailov, I.S. 2019AstL...45...30I
Izm2019 Ast. Lett. 45, 30, 2019
Izm2019 (Orbital elements from weighted solutions used when available (Table 2),
Izm2019 unweighted elements (Table 1) used for remaining 29 systems.)
 
 
DISCOVERER
 
 
idgroup discov author
1 BU Burnham, S.W. (BU 1 - 81)
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
21209+0307 BU 838 1999 58 149 1.6 7.92 10.02 F8 D 212055.78+030705.6
21209+0307 BU 838 2007 60 151 1.6 7.92 10.02 F8 D 212055.78+030705.6
21209+0307 BU 838 2016 61 156 1.6 7.92 10.02 F8 O 212055.78+030705.6

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

 
 
WDS 21209+0307 BU 838 (HD 203235) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 21209+0307 BU 838 (HD 203235) : MEASURES
 
 
No records found.

 
 
WDS 21209+0307 (HD 203235) : VIRTUAL EYEPIECE
 
 

21209+0307 BU 838A mag 7.92 Sp F8 21209+0307 BU 838B sep 1.6 P.A. 156.00 mag 10.02 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 21209+0307 (HD 203235) : ALADIN DSS IMAGE @ 21h 20m 55.78s +03° 07' 05.6"
 
 
 
 
WDS 21209+0307 BU 838 (HD 203235) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

21209+0307 BU 838 distance=0' 21214+0253 STT 435 distance=16' 21197+0256 CVR 893 distance=23' 21211+0336 NSN 5 distance=30' 21189+0252 HEI 407 distance=34' 21188+0245 BAL2051 distance=39' 21192+0339 J 1721 distance=42' 21185+0236 OSO 144 distance=48' 21210+0217 BAL1586Aa,Ab distance=50' 21210+0217 HEI 408AB distance=50' 21210+0217 HEI 408AC distance=50' 21210+0217 HEI 408AD distance=50' 21210+0217 HEI 408DE distance=51' 21242+0323 BAL2052 distance=53' 21242+0248 J 914 distance=53' 21243+0327 BAL2561 distance=56' 21173+0323 BAL2050 distance=57' 21225+0403 UC 4462 distance=61' 21243+0343 A 2288 distance=63' 21251+0330 FMR 163 distance=67' 21218+0202 STF2787AB distance=67' 21218+0202 STF2787AC distance=67' 21199+0158 KPP 763 distance=71' 21232+0409 SKF2742 distance=71' 21256+0248 J 1039 distance=73' 21169+0347 UC 4426 distance=74' 21179+0407 BAL2559 distance=75' 21260+0312 BAL2053 distance=78' 21237+0422 STF2791 distance=86' 21242+0422 CVR 898 distance=90' 21267+0335 VOU 41 distance=92' 21266+0347 TDT2969 distance=95' 21255+0203 A 2289AB distance=95' 21255+0203 STT 439AB,C distance=95' 21251+0157 BAL1588 distance=96' 21182+0141 BAL1584 distance=96' 21164+0421 GRV 442 distance=101' 21147+0354 UC 4420 distance=104' 21172+0438 HU 274 distance=107' 21156+0419 TDT2865 distance=107' 21234+0123 BAL1228 distance=111' 21276+0204 J 2349 distance=118' 21286+0237 BAL2054 distance=118' 21130+0248 BU 1303 distance=121' 21211+0104 BAL1227 distance=122' 21129+0333 UC 4407 distance=124' 21217+0512 CBL 599 distance=125' 21149+0440 BAL2979 distance=130' 21139+0427 BAL2977 distance=133' 21145+0441 BU 682AB distance=135' 21145+0441 BU 682AC distance=135' 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 21209+0307 BU 838 156 1.6
Show 21214+0253 STT 435 239 0.7 16
Show 21197+0256 CVR 893 85 21.0 23
Show 21211+0336 NSN 5 65 7.5 30
Show 21189+0252 HEI 407 62 0.2 34
Show 21188+0245 BAL2051 166 2.6 39
Show 21192+0339 J 1721 272 3.2 42
Show 21185+0236 OSO 144 346 16.8 48
Show 21210+0217 BAL1586 Aa,Ab 111 0.6 50
Show 21210+0217 HEI 408 AB 258 2.3 50
Show 21210+0217 HEI 408 AC 273 55.5 50
Show 21210+0217 HEI 408 AD 111 95.2 50
Show 21210+0217 HEI 408 DE 106 54.5 51
Show 21242+0323 BAL2052 256 16.9 53
Show 21242+0248 J 914 1.8 53
Show 21243+0327 BAL2561 288 20.5 56
Show 21173+0323 BAL2050 181 18.3 57
Show 21225+0403 UC 4462 71 29.2 61
Show 21243+0343 A 2288 227 0.4 63
Show 21251+0330 FMR 163 12 15.4 67
Show 21218+0202 STF2787 AB 20 22.6 67
Show 21218+0202 STF2787 AC 94 70.4 67
Show 21199+0158 KPP 763 174 6.6 71
Show 21232+0409 SKF2742 104 1.4 71
Show 21256+0248 J 1039 332 4.3 73
Show 21169+0347 UC 4426 251 27.3 74
Show 21179+0407 BAL2559 283 3.9 75
Show 21260+0312 BAL2053 93 19.9 78
Show 21237+0422 STF2791 103 2.9 86
Show 21242+0422 CVR 898 250 13.6 90
Show 21267+0335 VOU 41 171 0.1 92
Show 21266+0347 TDT2969 155 0.5 95
Show 21255+0203 A 2289 AB 334 0.1 95
Show 21255+0203 STT 439 AB,C 222 14.6 95
Show 21251+0157 BAL1588 134 17.2 96
Show 21182+0141 BAL1584 338 9.7 96
Show 21164+0421 GRV 442 181 52.9 101
Show 21147+0354 UC 4420 80 51.3 104
Show 21172+0438 HU 274 147 4.1 107
Show 21156+0419 TDT2865 112 2.1 107
Show 21234+0123 BAL1228 317 5.9 111
Show 21276+0204 J 2349 237 8.4 118
Show 21286+0237 BAL2054 121 18.1 118
Show 21130+0248 BU 1303 234 4.2 121
Show 21211+0104 BAL1227 152 4.3 122
Show 21129+0333 UC 4407 306 58.2 124
Show 21217+0512 CBL 599 197 19.9 125
Show 21149+0440 BAL2979 182 11.5 130
Show 21139+0427 BAL2977 305 17.1 133
Show 21145+0441 BU 682 AB 102 5.7 135
Show 21145+0441 BU 682 AC 179 93.0 135

 
 
WDS 21209+0307 : COMPONENTS
 
 
  A
B pa=156.0°
sep=1.64"
 
 
21209+0307 A
 
 
Componente originario normalizzato AB Name HD 203235 Coord arcsec 2000 212055.78+030705.6 Mag 7.92
Spectral class F8 (yellow-white) PmRA 133.00 PmDE 4.0 HIP 105399
Tycho2 0532-00314-1 HD 203235 ADS 14880 BD BD+02 4343
Tycho2
Tycho2 0532-00314-1 Pflag P RAmdeg 320.23241271 DEmdeg 3.11823571
PmRA 132.7 PmDE 3.6 E RAmdeg 6 E DEmdeg 7
E pmRA 1.3 E pmDE 1.3 EpRAm 1991.41 EpDEm 1991.28
Num 6 Q RAmdeg 0.7 Q DEmdeg 1.7 Q pmRA 0.6
Q pmDE 1.6 BTmag 8.470 E BTmag 0.017 VTmag 7.920
E VTmag 0.013 Prox 17 TYC T HIP 105399
CCDM A RAdeg 320.23209222 DEdeg 3.11824750 EpRA 1990 1.69
EpDE 1990 1.70 E RAdeg 6.0 E DEdeg 6.9 Posflg D
Corr -0.2
Hipparcos
Catalog H HIP 105399 Proxy H RAhms 21 20 55.70
DEdms +03 07 05.7 Vmag 7.75 VarFlag R Vmag H
RAdeg 320.232 DEdeg 3.11824 AstroRef A Plx 14.03
CCDM 21209+0307 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 144 Rho 1.61 HD 203235 BD BD+02 4343
CD CP Dm number +02 4343 VIred 0.34
SpType F8 R SpType Coord arcsec 2000 212055.70+030705.7
Hipparcos 2
HIP 105399 Sn 15 So 3 Nc 2
RArad 5.5891041213 DErad 0.0544236352 Plx 14.09 PmRA 137.74
PmDE 5.61 E RArad 0.82 E DErad 0.77 E Plx 0.99
E pmRA 1.09 E pmDE 0.82 Hpmag 7.8239 E Hpmag 0.0018
SHp 0.016 VA 0 BV 0 E BV 0
VI 0
CCDM
Ccdm 21209+0307 RComp Comp A Note1
Note2 Discov num DRAs 1.79 DDEs 4.5
R dRAs 10 Year Theta Rho
Obs 2 Vmag 8.1 Sp F8 PmNote *
PmRA 138 PmDE -8 Dm number +02 4343 Cat1 BD
Name2 +02 2719 Cat2 AGK2/3 HD 203235 M HD
ADS BDS A14880 M ADS BDS N IDS IDS 21159N0242A
HIC 105399
 
 
21209+0307 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 212055.82+030704.1 Mag 10.02 PmRA 133.00
PmDE 4.0 Tycho2 0532-00314-2 Calc delta mag 2.1 Calc coord yes
Tycho2
Tycho2 0532-00314-2 Pflag P RAmdeg 320.23241271 DEmdeg 3.11823571
PmRA 132.7 PmDE 3.6 E RAmdeg 6 E DEmdeg 7
E pmRA 1.3 E pmDE 1.3 EpRAm 1991.41 EpDEm 1991.28
Num 6 Q RAmdeg 0.7 Q DEmdeg 1.7 Q pmRA 0.6
Q pmDE 1.6 BTmag 10.934 E BTmag 0.065 VTmag 10.016
E VTmag 0.043 Prox 17 TYC HIP 105399
CCDM B RAdeg 320.23235778 DEdeg 3.11786556 EpRA 1990 1.67
EpDE 1990 1.64 E RAdeg 29.2 E DEdeg 36.4 Posflg D
Corr -0.1
CCDM
Ccdm 21209+0307 RComp Comp B Note1
Note2 Discov num BU 838 DRAs DDEs
R dRAs Year 1958 Theta 130 Rho 1.6
Obs 99 Vmag 10.0 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A14880 M ADS BDS N IDS IDS 21159N0242B
HIC 105399