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Current system
21184+0518
HDS 3031
HD 202817


Nearby doubles
28' : 21197+0537
J 2341

39' : 21158+0515
WRH 35
Kitalpha

43' : 21190+0559
HJ 3022AB

45' : 21172+0438
HU 274

50' : 21217+0512
CBL 599

64' : 21164+0421
GRV 442

65' : 21149+0440
BAL2979

69' : 21140+0457
GWP3048

69' : 21145+0441
BU 682AB

72' : 21179+0407
BAL2559

73' : 21156+0419
TDT2865

74' : 21138+0545
KPP3367

85' : 21139+0427
BAL2977

88' : 21131+0558
GWP3043AB

94' : 21169+0347
UC 4426

96' : 21126+0437
HJ 3013

97' : 21225+0403
UC 4462

98' : 21237+0422
STF2791

99' : 21192+0339
J 1721

100' : 21232+0409
SKF2742

100' : 21147+0354
UC 4420

104' : 21242+0422
CVR 898

109' : 21229+0644
ALD 76

110' : 21211+0336
NSN 5

113' : 21229+0649
HJ 3023AB

117' : 21173+0323
BAL2050



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

21184+0518 HDS 3031 (HD 202817)

 
 
21h 18m 22.09s +05° 18' 12.6" P.A. 103.00 sep 0.1 mag 9.94,10.16 Sp F5 dist. 182.48 pc (595.25 l.y.)
 
 
Coord 2000 21184+0518 Discov num HDS3031 Comp Coord arcsec 2000 21 18 22.09 +05 18 12.6
Date first 1991 Date last 2021 Obs 7
Pa first 9 Pa last 103.2 P.A. Now (θ) 103.2°
Sep first 0.2 Sep last 0.117 Sep. Now (ρ) 0.117"
Mag pri 9.94 Mag sec 10.16 delta mag (ΔM) 0.22 Spectral class F5 (yellow-white)
Pri motion ra +006 Sec motion ra
Pri motion dec -006 Sec motion dec
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 202817 Constellation Equuleus SAO 126696 HIP 105174
Tycho2 0536-01595-1 Gaia DR2 1732661829514076032 HD 202817 BD BD+04 4646
Distance 182.48 Distance ly 595.25
 
 
WDS 21184+0518 HDS 3031 (HD 202817) : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
HDS Hipparcos Double Star (from additional DD list) ...................
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
21184+0518 HDS3031 1991 1 9 0.2 9.94 10.16 F5 X 211822.09+051812.6
21184+0518 HDS3031 2014 3 78 0.1 9.94 10.16 F5 X 211822.09+051812.6
21184+0518 HDS3031 2015 4 81 0.1 9.94 10.16 F5 X 211822.09+051812.6
21184+0518 HDS3031 2018 5 90 0.1 9.94 10.16 F5 X 211822.09+051812.6
21184+0518 HDS3031 2019 6 94 0.1 9.94 10.16 F5 211822.09+051812.6
21184+0518 HDS3031 2021 7 103 0.1 9.94 10.16 F5 211822.09+051812.6

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

 
 
WDS 21184+0518 HDS 3031 (HD 202817) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 21184+0518 HDS 3031 (HD 202817) : MEASURES
 
 
No records found.

 
 
WDS 21184+0518 (HD 202817) : VIRTUAL EYEPIECE
 
 

21184+0518 HDS3031A mag 9.94 Sp F5 21184+0518 HDS3031B sep 0.1 P.A. 103.30 mag 10.16 virtual eyepiece
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Pass over with the mouse cursor to display the catalog designation.
Radius:
Components only
 
 
WDS 21184+0518 (HD 202817) : ALADIN DSS IMAGE @ 21h 18m 22.09s +05° 18' 12.6"
 
 
 
 
WDS 21184+0518 HDS 3031 (HD 202817) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

21184+0518 HDS3031 distance=0' 21197+0537 J 2341 distance=28' 21158+0515 WRH 35 (Kitalpha) distance=39' 21190+0559 HJ 3022AB distance=43' 21190+0559 HJ 3022AC distance=43' 21172+0438 HU 274 distance=45' 21217+0512 CBL 599 distance=50' 21164+0421 GRV 442 distance=64' 21149+0440 BAL2979 distance=65' 21140+0457 GWP3048 distance=69' 21145+0441 BU 682AB distance=69' 21145+0441 BU 682AC distance=69' 21179+0407 BAL2559 distance=72' 21156+0419 TDT2865 distance=73' 21138+0545 KPP3367 distance=74' 21139+0427 BAL2977 distance=85' 21131+0558 GWP3043AB distance=88' 21131+0558 GWP3044AC distance=88' 21169+0347 UC 4426 distance=94' 21126+0437 HJ 3013 distance=96' 21225+0403 UC 4462 distance=97' 21237+0422 STF2791 distance=98' 21192+0339 J 1721 distance=99' 21232+0409 SKF2742 distance=100' 21147+0354 UC 4420 distance=100' 21242+0422 CVR 898 distance=104' 21229+0644 ALD 76 distance=109' 21211+0336 NSN 5 distance=110' 21229+0649 BU 1504CD distance=113' 21229+0649 HJ 3023AB distance=113' 21229+0649 HJ 3023AC distance=113' 21229+0649 HJ 3023AE distance=113' 21229+0649 BU 1504FG distance=113' 21173+0323 BAL2050 distance=117' 21264+0522 GRV 468 distance=121' 21143+0705 HJ 3015 distance=122' 21126+0644 KPP 6 distance=123' 21151+0712 UC 4422 distance=125' 21267+0527 OSO 146AB distance=125' 21267+0527 OSO 146AC distance=125' 21243+0343 A 2288 distance=131' 21124+0656 BRT2190 distance=132' 21129+0333 UC 4407 distance=133' 21096+0550 TDT2793 distance=135' 21139+0715 UC 4413 distance=135' 21167+0731 HDS3030 distance=136' 21094+0502 STT 429 distance=136' 21135+0713 BU 270AB distance=137' 21135+0713 S 781AB,D distance=137' 21135+0713 BU 270AB,C distance=137' 21209+0307 BU 838 distance=137' 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 21184+0518 HDS3031 103 0.1
Show 21197+0537 J 2341 350 7.4 28
Show Kitalpha 21158+0515 WRH 35 104 0.0 39
Show 21190+0559 HJ 3022 AB 76 17.3 43
Show 21190+0559 HJ 3022 AC 310 41.8 43
Show 21172+0438 HU 274 147 4.1 45
Show 21217+0512 CBL 599 197 19.9 50
Show 21164+0421 GRV 442 181 52.9 64
Show 21149+0440 BAL2979 182 11.5 65
Show 21140+0457 GWP3048 278 115.4 69
Show 21145+0441 BU 682 AB 102 5.7 69
Show 21145+0441 BU 682 AC 179 93.0 69
Show 21179+0407 BAL2559 283 3.9 72
Show 21156+0419 TDT2865 112 2.1 73
Show 21138+0545 KPP3367 245 1.8 74
Show 21139+0427 BAL2977 305 17.1 85
Show 21131+0558 GWP3043 AB 300 81.7 88
Show 21131+0558 GWP3044 AC 139 96.7 88
Show 21169+0347 UC 4426 251 27.3 94
Show 21126+0437 HJ 3013 119 11.3 96
Show 21225+0403 UC 4462 71 29.2 97
Show 21237+0422 STF2791 103 2.9 98
Show 21192+0339 J 1721 272 3.2 99
Show 21232+0409 SKF2742 104 1.4 100
Show 21147+0354 UC 4420 80 51.3 100
Show 21242+0422 CVR 898 250 13.6 104
Show 21229+0644 ALD 76 66 3.0 109
Show 21211+0336 NSN 5 65 7.5 110
Show 21229+0649 BU 1504 CD 8 5.2 113
Show 21229+0649 HJ 3023 AB 257 40.9 113
Show 21229+0649 HJ 3023 AC 301 74.1 113
Show 21229+0649 HJ 3023 AE 273 96.0 113
Show 21229+0649 BU 1504 FG 156 6.6 113
Show 21173+0323 BAL2050 181 18.3 117
Show 21264+0522 GRV 468 20 75.9 121
Show 21143+0705 HJ 3015 264 16.3 122
Show 21126+0644 KPP 6 61 6.7 123
Show 21151+0712 UC 4422 43 16.1 125
Show 21267+0527 OSO 146 AB 309 25.0 125
Show 21267+0527 OSO 146 AC 49 25.3 125
Show 21243+0343 A 2288 227 0.4 131
Show 21124+0656 BRT2190 15 3.7 132
Show 21129+0333 UC 4407 306 58.2 133
Show 21096+0550 TDT2793 354 0.5 135
Show 21139+0715 UC 4413 227 26.9 135
Show 21167+0731 HDS3030 285 0.2 136
Show 21094+0502 STT 429 -1 -1.0 136
Show 21135+0713 BU 270 AB 342 0.4 137
Show 21135+0713 S 781 AB,D 172 184.1 137
Show 21135+0713 BU 270 AB,C 26 30.8 137
Show 21209+0307 BU 838 156 1.6 137

 
 
WDS 21184+0518 : COMPONENTS
 
 
  A
B pa=103.3°
sep=0.12"
 
 
21184+0518 A
 
 
Componente originario normalizzato AB Name HD 202817 Coord arcsec 2000 211822.09+051812.6 Mag 9.94
Spectral class F5 (yellow-white) PmRA 6.00 PmDE -6.0 SAO 126696
HIP 105174 Tycho2 0536-01595-1 HD 202817 BD BD+04 4646
Tycho2
Tycho2 0536-01595-1 Pflag RAmdeg 319.59207313 DEmdeg 5.30349560
PmRA 5.4 PmDE -8.7 E RAmdeg 14 E DEmdeg 14
E pmRA 1.2 E pmDE 1.3 EpRAm 1988.19 EpDEm 1988.69
Num 12 Q RAmdeg 1.4 Q DEmdeg 0.9 Q pmRA 1.4
Q pmDE 0.9 BTmag 9.707 E BTmag 0.027 VTmag 9.267
E VTmag 0.023 Prox 999 TYC T HIP 105174
CCDM AB RAdeg 319.59206167 DEdeg 5.30351556 EpRA 1990 1.67
EpDE 1990 1.80 E RAdeg 15.0 E DEdeg 14.7 Posflg P
Corr 0.0
SAO
SAO 126696 DelFlag RA1950 PmRA1950 -0.0006
DE1950 PmDE1950 -0.003 Vmag 8.8 SpType F5
Double code Source 30 CatNum 7464 DM BD+04 4646
DMcomp BDsup HD 202817 M HD 0
GC RA1950rad 5.56703767 DE1950rad 0.08888195 PmRA2000 -0.0005
PmDE2000 -0.007
Hipparcos
Catalog H HIP 105174 Proxy H RAhms 21 18 22.09
DEdms +05 18 12.6 Vmag 9.19 VarFlag R Vmag H
RAdeg 319.592 DEdeg 5.30351 AstroRef * Plx 6.05
CCDM 21184+0518 N CCDM H Nsys 1 Ncomp 2
MultFlag C Source S Qual A M HIP AB
Theta 9 Rho 0.179 HD 202817 BD BD+04 4646
CD CP Dm number +04 4646 VIred 0.55
SpType F5 R SpType Coord arcsec 2000 211822.09+051812.6
Hipparcos 2
HIP 105174 Sn 55 So 3 Nc 2
RArad 5.5779336379 DErad 0.0925637223 Plx 5.48 PmRA 3.78
PmDE -6.15 E RArad 1.25 E DErad 1.3 E Plx 1.64
E pmRA 1.95 E pmDE 1.59 Hpmag 9.2915 E Hpmag 0.0027
SHp 0.016 VA 0 BV 0.481 E BV 0.008
VI 0.55
CCDM
Ccdm 21184+0518 RComp Comp A Note1
Note2 Discov num DRAs -1.91 DDEs 12.5
R dRAs 82 Year Theta Rho
Obs 2 Vmag 9.9 Sp F5 PmNote *
PmRA 6 PmDE -6 Dm number +04 4646 Cat1 BD
Name2 +05 3111 Cat2 AGK2/3 HD 202817 M HD
ADS BDS M ADS BDS N IDS IDS
HIC 105174
 
 
21184+0518 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 211822.10+051812.6 Mag 10.16 Calc delta mag 0.22
Calc coord yes
CCDM
Ccdm 21184+0518 RComp Comp B Note1
Note2 Discov num HDS DRAs -1.90 DDEs 12.7
R dRAs 82 Year 1991 Theta 9 Rho 0.2
Obs 1 Vmag 10.2 Sp PmNote *
PmRA 6 PmDE -6 Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS M ADS BDS N IDS IDS
HIC 105174