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Current system
18238+5139
ES 187 AB
HD 169816


Nearby doubles
25' : 18220+5122
UC 3560

30' : 18207+5131
RAO 388

46' : 18221+5222
ES 648

71' : 18182+5050
ES 647

72' : 18314+5144
SLE 194AB

72' : 18172+5103
AG 220

73' : 18162+5120
STF2305AB

81' : 18323+5149
SLE 205

81' : 18319+5110
ES 784

86' : 18152+5209
ES 646

91' : 18277+5016
LEP 158

94' : 18144+5107
ES 783

95' : 18339+5144
ZUC 16

100' : 18238+5318
YSC 66

101' : 18345+5147
HDS2634

104' : 18339+5221
A 1377AB

104' : 18126+5146
KPP4093

105' : 18340+5058
ES 785AB

108' : 18134+5230
ES 644

109' : 18132+5228
TDT 740

110' : 18169+5309
CBL 76AB

110' : 18298+5314
TDT 911

112' : 18340+5045
ES 786

112' : 18147+5027
TDT 760

113' : 18244+5331
BEM 33

114' : 18120+5110
AG 359AB



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

18238+5139 ES 187 AB (HD 169816)

 
 
18h 23m 45.03s +51° 38' 55.8" P.A. 206.00 sep 2.5 mag 9.32,9.43 Sp G5 dist. 61.31 pc (199.99 l.y.)
 
 
Coord 2000 18238+5139 Discov num ES  187 Comp AB Coord arcsec 2000 18 23 45.03 +51 38 55.8
Date first 1903 Date last 2018 Obs 31
Pa first 199 Pa last 206.3 P.A. Now (θ) 206.3°
Sep first 2.7 Sep last 2.542 Sep. Now (ρ) 2.542"
Mag pri 9.32 Mag sec 9.43 delta mag (ΔM) 0.11 Spectral class G5 (yellow)
Pri motion ra +057 Sec motion ra +047
Pri motion dec +147 Sec motion dec +132
Notes N (See Notes)
rPM=0.114 (< 0.3, Physical double)
This double is physical.
 
 
18238+5139 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show HD 169816 30942 18 23 45 +51 38 56 ES 187 AB 2018 31 206 2.5 9.32 9.43 0.11 <===
Show 30942 18 23 45 +51 38 56 ES 187 AC 2016 19 124 91.3 9.32 10.33 1.01
Triple system
3 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 169816 Constellation Draco SAO 30942 HIP 90141
Tycho2 3538-02027-1 Gaia DR2 2124268868729815936 HD 169816 GC 25136
BD BD+51 2372 Distance 61.31 Distance ly 199.99
 
 
WDS 18238+5139 ES 187 AB (HD 169816) : NOTES
 
 
discov_num notes refcode
ES 187 AB: B is SB1, P=126.38d Tok2014d
 
 
REFERENCES
 
 
refcode metd author reference
Tok2014d E2 - Tokovinin, A. 2014AJ....147...86T
Tok2014d AJ 147, 86, 2014
 
 
DISCOVERER
 
 
idgroup discov author
1 ES Espin, T.E.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18238+5139 ES 187 AB 2005 24 206 2.6 9.32 9.43 G5 182345.03+513855.8
18238+5139 ES 187 AB 2006 25 206 2.6 9.32 9.43 G5 182345.03+513855.8
18238+5139 ES 187 AB 2008 27 206 2.6 9.32 9.43 G5 182345.03+513855.8
18238+5139 ES 187 AB 2011 29 206 2.6 9.32 9.43 G5 182345.03+513855.8
18238+5139 ES 187 AB 2015 28 207 2.5 9.32 9.43 G5 N 182345.03+513855.8
18238+5139 ES 187 AB 2016 29 212 2.1 9.32 9.43 G5 N 182345.03+513855.8
18238+5139 ES 187 AB 2018 30 207 2.5 9.32 9.43 G5 N 182345.03+513855.8

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

 
 
WDS 18238+5139 ES 187 AB (HD 169816) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 18238+5139 ES 187 AB (HD 169816) : MEASURES
 
 
No records found.

 
 
WDS 18238+5139 (HD 169816) : VIRTUAL EYEPIECE
 
 

18238+5139 ES 187A mag 9.32 Sp G5 18238+5139 ES 187B sep 2.4 P.A. 197.00 mag 9.43 18238+5139 ES 187C sep 69.4 P.A. 137.50 mag 10.33 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 18238+5139 (HD 169816) : ALADIN DSS IMAGE @ 18h 23m 45.03s +51° 38' 55.8"
 
 
 
 
WDS 18238+5139 ES 187 AB (HD 169816) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

18238+5139 ES 187AB distance=0' 18220+5122 UC 3560 distance=25' 18207+5131 RAO 388 distance=30' 18221+5222 ES 648 distance=46' 18182+5050 ES 647 distance=71' 18314+5144 SLE 194AB distance=72' 18314+5144 SLE 194AC distance=72' 18172+5103 AG 220 distance=72' 18162+5120 STF2305AB distance=73' 18162+5120 STF2305AC distance=73' 18323+5149 SLE 205 distance=81' 18319+5110 ES 784 distance=81' 18152+5209 ES 646 distance=86' 18277+5016 LEP 158 distance=91' 18144+5107 ES 783 distance=94' 18339+5144 ZUC 16 distance=95' 18238+5318 YSC 66 distance=100' 18345+5147 HDS2634 distance=101' 18339+5221 A 1377AB distance=104' 18339+5221 STF2348AB,C distance=104' 18339+5221 SLE 216AB,D distance=104' 18339+5221 SLE 216AB,E distance=104' 18126+5146 KPP4093 distance=104' 18340+5058 ES 785AB distance=105' 18340+5058 ES 785AC distance=105' 18340+5058 ABH 102AD distance=105' 18134+5230 ES 644 distance=108' 18132+5228 TDT 740 distance=109' 18164+5014 UC 3540CD distance=110' 18169+5309 CBL 76AB distance=110' 18164+5014 JNN 117DE distance=110' 18298+5314 TDT 911 distance=110' 18340+5045 ES 786 distance=112' 18147+5027 TDT 760 distance=112' 18244+5331 BEM 33 distance=113' 18120+5110 AG 359AB distance=114' 18120+5110 ABH 96AD distance=114' 18120+5110 ABH 96AE distance=114' 18120+5110 ABH 96AF distance=114' 18120+5110 AG 359AC distance=114' 18120+5110 AG 359BC distance=115' 18207+5330 TDT 808 distance=115' 18133+5242 A 1376 distance=116' 18344+5240 BEM 34 distance=116' 18221+5336 BEM 32 distance=119' 18109+5139 ES 642 distance=120' 18259+5338 FMR 140 distance=121' 18372+5122 SLE 227 distance=127' 18176+5333 UC 3546 distance=127' 18182+5337 MLR 586 distance=129' 18105+5217 KPP4089 distance=129' 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 18238+5139 ES 187 AB 206 2.5
Show 18238+5139 ES 187 AC 124 91.3
Show 18220+5122 UC 3560 292 66.1 25
Show 18207+5131 RAO 388 51 0.2 30
Show 18221+5222 ES 648 1 5.0 46
Show 18182+5050 ES 647 291 2.4 71
Show 18314+5144 SLE 194 AB 213 7.8 72
Show 18314+5144 SLE 194 AC 109 16.1 72
Show 18172+5103 AG 220 126 10.9 72
Show 18162+5120 STF2305 AB 334 5.1 73
Show 18162+5120 STF2305 AC 197 94.5 73
Show 18323+5149 SLE 205 59 9.7 81
Show 18319+5110 ES 784 65 7.1 81
Show 18152+5209 ES 646 197 10.8 86
Show 18277+5016 LEP 158 238 5.1 91
Show 18144+5107 ES 783 229 10.8 94
Show 18339+5144 ZUC 16 47 17.0 95
Show 18238+5318 YSC 66 43 0.9 100
Show 18345+5147 HDS2634 351 0.1 101
Show 18339+5221 A 1377 AB 134 0.2 104
Show 18339+5221 STF2348 AB,C 271 25.7 104
Show 18339+5221 SLE 216 AB,D 338 93.7 104
Show 18339+5221 SLE 216 AB,E 232 109.1 104
Show 18126+5146 KPP4093 337 6.0 104
Show 18340+5058 ES 785 AB 98 9.4 105
Show 18340+5058 ES 785 AC 293 10.9 105
Show 18340+5058 ABH 102 AD 17 54.2 105
Show 18134+5230 ES 644 26 9.3 108
Show 18132+5228 TDT 740 9 0.7 109
Show 18164+5014 UC 3540 CD 177 19.5 110
Show 18169+5309 CBL 76 AB 8 44.8 110
Show 18164+5014 JNN 117 DE 333 0.7 110
Show 18298+5314 TDT 911 196 0.7 110
Show 18340+5045 ES 786 323 5.9 112
Show 18147+5027 TDT 760 139 0.5 112
Show 18244+5331 BEM 33 46 8.0 113
Show 18120+5110 AG 359 AB 306 23.3 114
Show 18120+5110 ABH 96 AD 298 62.1 114
Show 18120+5110 ABH 96 AE 8 77.1 114
Show 18120+5110 ABH 96 AF 16 47.4 114
Show 18120+5110 AG 359 AC 333 10.4 114
Show 18120+5110 AG 359 BC 107 14.7 115
Show 18207+5330 TDT 808 271 2.2 115
Show 18133+5242 A 1376 22 0.3 116
Show 18344+5240 BEM 34 26 10.5 116
Show 18221+5336 BEM 32 315 7.9 119
Show 18109+5139 ES 642 273 7.2 120
Show 18259+5338 FMR 140 84 16.2 121
Show 18372+5122 SLE 227 228 5.7 127
Show 18176+5333 UC 3546 122 28.6 127
Show 18182+5337 MLR 586 194 0.6 129

 
 
WDS 18238+5139 : COMPONENTS
 
 
  A B
B pa=197.0°
sep=2.38"
 
C pa=137.5°
sep=69.43"
pa=135.8°
sep=68.25"
 
 
18238+5139 A
 
 
Name HD 169816 Coord arcsec 2000 182345.03+513855.8 Mag 9.32 Spectral class G5 (yellow)
PmRA 57.00 PmDE 147.0 SAO 30942 HIP 90141
Tycho2 3538-02027-1 HD 169816 GC 25136 BD BD+51 2372
Tycho2
Tycho2 3538-02027-1 Pflag P RAmdeg 275.93758552 DEmdeg 51.64886359
PmRA 45.8 PmDE 128.8 E RAmdeg 16 E DEmdeg 16
E pmRA 3.2 E pmDE 2.9 EpRAm 1991.44 EpDEm 1991.36
Num 3 Q RAmdeg 0.1 Q DEmdeg 1.1 Q pmRA 0.2
Q pmDE 1.2 BTmag 10.196 E BTmag 0.032 VTmag 9.319
E VTmag 0.022 Prox 26 TYC T HIP 90141
CCDM A RAdeg 275.93762028 DEdeg 51.64884222 EpRA 1990 1.71
EpDE 1990 1.70 E RAdeg 16.1 E DEdeg 15.6 Posflg D
Corr 0.1
SAO
SAO 30942 DelFlag RA1950 PmRA1950 0.0043
DE1950 PmDE1950 0.126 Vmag 8.1 SpType G5
Double code Source 70 CatNum 25136 DM BD+51 2372
DMcomp BDsup HD 169816 M HD 0
GC 25136 RA1950rad 4.81091621 DE1950rad 0.90091598 PmRA2000 0.0048
PmDE2000 0.127
Hipparcos
Catalog H HIP 90141 Proxy H RAhms 18 23 45.03
DEdms +51 38 55.8 Vmag 8.51 VarFlag R Vmag H
RAdeg 275.938 DEdeg 51.6488 AstroRef A Plx 15.72
CCDM 18238+5139 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 205 Rho 2.595 HD 169816 BD BD+51 2372
CD CP Dm number +51 2372 VIred 1.06
SpType G5 R SpType Coord arcsec 2000 182345.03+513855.8
Hipparcos 2
HIP 90141 Sn 15 So 3 Nc 2
RArad 4.8160197499 DErad 0.9014419538 Plx 16.31 PmRA 47.02
PmDE 130.95 E RArad 0.77 E DErad 0.7 E Plx 0.78
E pmRA 0.86 E pmDE 0.89 Hpmag 8.6379 E Hpmag 0.0023
SHp 0.017 VA 0 BV 0.638 E BV 0.024
VI 0.7
CCDM
Ccdm 18238+5139 RComp Comp A Note1
Note2 Discov num DRAs -2.99 DDEs -4.2
R dRAs 10 Year Theta Rho
Obs 3 Vmag 8.8 Sp G5 PmNote *
PmRA 47 PmDE 132 Dm number +51 2372 Cat1 BD
Name2 +51 1230 Cat2 AGK2/3 HD 169816 M HD
ADS BDS A11328 M ADS BDS N IDS IDS 18214N5135A
HIC 90141
 
 
18238+5139 B
 
 
Coord arcsec 2000 182344.95+513853.5 Mag 9.43 PmRA 47.00 PmDE 132.0
Tycho2 3538-02027-2 Calc delta mag 0.11 Calc coord yes
Tycho2
Tycho2 3538-02027-2 Pflag P RAmdeg 275.93758552 DEmdeg 51.64886359
PmRA 45.8 PmDE 128.8 E RAmdeg 16 E DEmdeg 16
E pmRA 3.2 E pmDE 2.9 EpRAm 1991.44 EpDEm 1991.36
Num 3 Q RAmdeg 0.1 Q DEmdeg 1.1 Q pmRA 0.2
Q pmDE 1.2 BTmag 10.386 E BTmag 0.036 VTmag 9.431
E VTmag 0.023 Prox 26 TYC T HIP 90141
CCDM B RAdeg 275.93713278 DEdeg 51.64818639 EpRA 1990 1.71
EpDE 1990 1.71 E RAdeg 18.1 E DEdeg 17.2 Posflg D
Corr 0.1
CCDM
Ccdm 18238+5139 RComp Comp B Note1
Note2 Discov num ES 187 DRAs DDEs
R dRAs Year 1903 Theta 201 Rho 2.6
Obs 11 Vmag 8.9 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A11328 M ADS BDS N IDS IDS 18214N5135B
HIC 90141
 
 
18238+5139 C
 
 
Coord arcsec 2000 182350.07+513804.6 Mag 10.33 PmRA 23.00 PmDE 0.0
Calc delta mag 1.01 Calc coord yes
CCDM
Ccdm 18238+5139 RComp Comp C Note1
Note2 Discov num ES 187 DRAs DDEs
R dRAs Year 1908 Theta 119 Rho 85.6
Obs 3 Vmag 9.1 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A11328 M ADS BDS N IDS IDS 18214N5135C
HIC