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Current system
21237+0422
STF 2791
HD 203701


Nearby doubles
8' : 21242+0422
CVR 898

16' : 21232+0409
SKF2742

27' : 21225+0403
UC 4462

40' : 21243+0343
A 2288

56' : 21266+0347
TDT2969

56' : 21243+0327
BAL2561

57' : 21251+0330
FMR 163

59' : 21217+0512
CBL 599

60' : 21242+0323
BAL2052

61' : 21211+0336
NSN 5

65' : 21267+0335
VOU 41

68' : 21281+0440
HDS3056

68' : 21277+0455
CVR 903

73' : 21264+0522
GRV 468

78' : 21192+0339
J 1721

79' : 21260+0312
BAL2053

79' : 21267+0527
OSO 146AB

86' : 21209+0307
BU 838

89' : 21179+0407
BAL2559

91' : 21292+0451
J 2350

96' : 21242+0248
J 914

96' : 21214+0253
STT 435

97' : 21197+0537
J 2341

98' : 21184+0518
HDS3031

99' : 21256+0248
J 1039

99' : 21172+0438
HU 274



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Binary Systems
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Neglected List I
Neglected List II
Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

21237+0422 STF 2791 (HD 203701)

 
 
21h 23m 43.59s +04° 21' 54.2" P.A. 103.00 sep 2.9 mag 8.92,9.28 Sp F0 dist. 220.75 pc (720.09 l.y.)
 
 
Coord 2000 21237+0422 Discov num STF2791 Comp Coord arcsec 2000 21 23 43.59 +04 21 54.2
Date first 1827 Date last 2019 Obs 54
Pa first 104 Pa last 102.9 P.A. Now (θ) 102.9°
Sep first 2.4 Sep last 2.851 Sep. Now (ρ) 2.851"
Mag pri 8.92 Mag sec 9.28 delta mag (ΔM) 0.36 Spectral class F0 (yellow-white)
Pri motion ra +025 Sec motion ra +038
Pri motion dec +009 Sec motion dec +006
Notes N (See Notes)
rPM=0.347
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 203701 Constellation Equuleus SAO 126763 HIP 105634
Tycho2 0537-00937-1 Gaia DR2 2693078879824997376 HD 203701 GC 29949
BD BD+03 4559 Distance 220.75 Distance ly 720.09
 
 
WDS 21237+0422 STF 2791 (HD 203701) : NOTES
 
 
discov_num notes refcode
STF2791 J 1244. J__1962a
 
 
REFERENCES
 
 
refcode metd author reference
J__1962a M+ j Jonckheere, R. 1962QB821.J64......
J__1962a +Pa General Cat. of Double Stars, Marseille, 1962
 
 
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
21237+0422 STF2791 1997 54 104 2.8 8.92 9.28 F0 D 212343.59+042154.2
21237+0422 STF2791 2009 57 104 2.8 8.92 9.28 F0 D 212343.59+042154.2
21237+0422 STF2791 2010 59 104 2.8 8.92 9.28 F0 D 212343.59+042154.2
21237+0422 STF2791 2011 61 104 2.9 8.92 9.28 F0 212343.59+042154.2
21237+0422 STF2791 2016 50 104 2.9 8.92 9.28 F0 212343.59+042154.2
21237+0422 STF2791 2019 53 104 2.9 8.92 9.28 F0 N 212343.59+042154.2

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

 
 
WDS 21237+0422 STF 2791 (HD 203701) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 21237+0422 STF 2791 (HD 203701) : MEASURES
 
 
No records found.

 
 
WDS 21237+0422 (HD 203701) : VIRTUAL EYEPIECE
 
 

21237+0422 STF2791A mag 8.92 Sp F0 21237+0422 STF2791B sep 2.8 P.A. 102.90 mag 9.28 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 21237+0422 (HD 203701) : ALADIN DSS IMAGE @ 21h 23m 43.59s +04° 21' 54.2"
 
 
 
 
WDS 21237+0422 STF 2791 (HD 203701) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

21237+0422 STF2791 distance=0' 21242+0422 CVR 898 distance=8' 21232+0409 SKF2742 distance=16' 21225+0403 UC 4462 distance=27' 21243+0343 A 2288 distance=40' 21266+0347 TDT2969 distance=56' 21243+0327 BAL2561 distance=56' 21251+0330 FMR 163 distance=57' 21217+0512 CBL 599 distance=59' 21242+0323 BAL2052 distance=60' 21211+0336 NSN 5 distance=61' 21267+0335 VOU 41 distance=65' 21281+0440 HDS3056 distance=68' 21277+0455 CVR 903 distance=68' 21264+0522 GRV 468 distance=73' 21192+0339 J 1721 distance=78' 21260+0312 BAL2053 distance=79' 21267+0527 OSO 146AB distance=79' 21267+0527 OSO 146AC distance=79' 21209+0307 BU 838 distance=86' 21179+0407 BAL2559 distance=89' 21292+0451 J 2350 distance=91' 21242+0248 J 914 distance=96' 21214+0253 STT 435 distance=96' 21197+0537 J 2341 distance=97' 21184+0518 HDS3031 distance=98' 21256+0248 J 1039 distance=99' 21172+0438 HU 274 distance=99' 21197+0256 CVR 893 distance=106' 21169+0347 UC 4426 distance=109' 21164+0421 GRV 442 distance=109' 21173+0323 BAL2050 distance=113' 21189+0252 HEI 407 distance=114' 21190+0559 HJ 3022AB distance=121' 21190+0559 HJ 3022AC distance=121' 21156+0419 TDT2865 distance=121' 21188+0245 BAL2051 distance=122' 21286+0237 BAL2054 distance=128' 21158+0515 WRH 35 (Kitalpha) distance=130' 21185+0236 OSO 144 distance=132' 21210+0217 BAL1586Aa,Ab distance=132' 21210+0217 HEI 408AB distance=132' 21210+0217 HEI 408AC distance=132' 21210+0217 HEI 408AD distance=132' 21210+0217 HEI 408DE distance=132' 21149+0440 BAL2979 distance=134' 21325+0452 HJ 3032 distance=136' 21147+0354 UC 4420 distance=138' 21317+0312 J 1723 distance=138' 21145+0441 BU 682AB distance=140' 21145+0441 BU 682AC distance=140' 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 21237+0422 STF2791 103 2.9
Show 21242+0422 CVR 898 250 13.6 8
Show 21232+0409 SKF2742 104 1.4 16
Show 21225+0403 UC 4462 71 29.2 27
Show 21243+0343 A 2288 227 0.4 40
Show 21266+0347 TDT2969 155 0.5 56
Show 21243+0327 BAL2561 288 20.5 56
Show 21251+0330 FMR 163 12 15.4 57
Show 21217+0512 CBL 599 197 19.9 59
Show 21242+0323 BAL2052 256 16.9 60
Show 21211+0336 NSN 5 65 7.5 61
Show 21267+0335 VOU 41 171 0.1 65
Show 21281+0440 HDS3056 220 0.2 68
Show 21277+0455 CVR 903 251 8.2 68
Show 21264+0522 GRV 468 20 75.9 73
Show 21192+0339 J 1721 272 3.2 78
Show 21260+0312 BAL2053 93 19.9 79
Show 21267+0527 OSO 146 AB 309 25.0 79
Show 21267+0527 OSO 146 AC 49 25.3 79
Show 21209+0307 BU 838 156 1.6 86
Show 21179+0407 BAL2559 283 3.9 89
Show 21292+0451 J 2350 60 5.7 91
Show 21242+0248 J 914 1.8 96
Show 21214+0253 STT 435 239 0.7 96
Show 21197+0537 J 2341 350 7.4 97
Show 21184+0518 HDS3031 103 0.1 98
Show 21256+0248 J 1039 332 4.3 99
Show 21172+0438 HU 274 147 4.1 99
Show 21197+0256 CVR 893 85 21.0 106
Show 21169+0347 UC 4426 251 27.3 109
Show 21164+0421 GRV 442 181 52.9 109
Show 21173+0323 BAL2050 181 18.3 113
Show 21189+0252 HEI 407 62 0.2 114
Show 21190+0559 HJ 3022 AB 76 17.3 121
Show 21190+0559 HJ 3022 AC 310 41.8 121
Show 21156+0419 TDT2865 112 2.1 121
Show 21188+0245 BAL2051 166 2.6 122
Show 21286+0237 BAL2054 121 18.1 128
Show Kitalpha 21158+0515 WRH 35 104 0.0 130
Show 21185+0236 OSO 144 346 16.8 132
Show 21210+0217 BAL1586 Aa,Ab 111 0.6 132
Show 21210+0217 HEI 408 AB 258 2.3 132
Show 21210+0217 HEI 408 AC 273 55.5 132
Show 21210+0217 HEI 408 AD 111 95.2 132
Show 21210+0217 HEI 408 DE 106 54.5 132
Show 21149+0440 BAL2979 182 11.5 134
Show 21325+0452 HJ 3032 93 17.5 136
Show 21147+0354 UC 4420 80 51.3 138
Show 21317+0312 J 1723 121 2.4 138
Show 21145+0441 BU 682 AB 102 5.7 140
Show 21145+0441 BU 682 AC 179 93.0 140

 
 
WDS 21237+0422 : COMPONENTS
 
 
  A
B pa=102.9°
sep=2.84"
 
 
21237+0422 A
 
 
Componente originario normalizzato AB Name HD 203701 Coord arcsec 2000 212343.59+042154.2 Mag 8.92
Spectral class F0 (yellow-white) PmRA 25.00 PmDE 9.0 SAO 126763
HIP 105634 Tycho2 0537-00937-1 HD 203701 GC 29949
BD BD+03 4559
Tycho2
Tycho2 0537-00937-1 Pflag RAmdeg 320.93163571 DEmdeg 4.36505540
PmRA 28.6 PmDE 10.4 E RAmdeg 11 E DEmdeg 11
E pmRA 1.5 E pmDE 1.5 EpRAm 1990.96 EpDEm 1991.04
Num 4 Q RAmdeg 1.0 Q DEmdeg 1.5 Q pmRA 1.0
Q pmDE 1.5 BTmag 9.362 E BTmag 0.023 VTmag 8.921
E VTmag 0.019 Prox 27 TYC T HIP 105634
CCDM A RAdeg 320.93156917 DEdeg 4.36503139 EpRA 1990 1.63
EpDE 1990 1.73 E RAdeg 11.0 E DEdeg 11.4 Posflg D
Corr -0.1
SAO
SAO 126763 DelFlag RA1950 PmRA1950 0.0036
DE1950 PmDE1950 0.01 Vmag 8.3 SpType F0
Double code Source 70 CatNum 29949 DM BD+03 4559
DMcomp BDsup HD 203701 M HD 0
GC 29949 RA1950rad 5.59035756 DE1950rad 0.0724266 PmRA2000 0.0038
PmDE2000 0.006
Hipparcos
Catalog H HIP 105634 Proxy H RAhms 21 23 43.57
DEdms +04 21 54.1 Vmag 8.43 VarFlag R Vmag G
RAdeg 320.932 DEdeg 4.36503 AstroRef A Plx 4.05
CCDM 21237+0422 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 104 Rho 2.784 HD 203701 BD BD+03 4559
CD CP Dm number +03 4559 VIred 0.45
SpType F0 R SpType Coord arcsec 2000 212343.57+042154.1
Hipparcos 2
HIP 105634 Sn 15 So 3 Nc 2
RArad 5.6013124439 DErad 0.0761842228 Plx 4.53 PmRA 36.81
PmDE 5.89 E RArad 1.34 E DErad 1.29 E Plx 1.46
E pmRA 1.9 E pmDE 1.54 Hpmag 8.4892 E Hpmag 0.0024
SHp 0.015 VA 0 BV 0.387 E BV 0.015
VI 0.45
CCDM
Ccdm 21237+0422 RComp Comp A Note1
Note2 Discov num DRAs 1.61 DDEs -6.1
R dRAs 10 Year Theta Rho
Obs 2 Vmag 8.8 Sp F0 PmNote *
PmRA 34 PmDE 11 Dm number +03 4559 Cat1 BD
Name2 +04 2902 Cat2 AGK2/3 HD 203701 M HD
ADS BDS A14933 M ADS BDS N IDS IDS 21187N0356A
HIC 105634
 
 
21237+0422 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 212343.78+042153.6 Mag 9.28 PmRA 38.00
PmDE 6.0 Calc delta mag 0.36 Calc coord yes
CCDM
Ccdm 21237+0422 RComp Comp B Note1
Note2 Discov num STF2791 DRAs DDEs
R dRAs Year 1827 Theta 104 Rho 2.5
Obs 19 Vmag 9.3 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A14933 M ADS BDS N IDS IDS 21187N0356B
HIC 105634