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Doubles in session


Current system
17366+0723
A 1156
HD 159857


Nearby doubles
15' : 17365+0708
UC 3374

35' : 17372+0649
HEI 862

36' : 17389+0715
A 1158

37' : 17362+0646
GAU 16

46' : 17362+0637
STF2188

52' : 17332+0734
A 1153

57' : 17399+0748
HDS2499

60' : 17339+0806
SHY 726

73' : 17319+0701
TDT 398

76' : 17358+0608
TDT 424

77' : 17387+0613
A 1157

81' : 17338+0613
TDT 416

81' : 17355+0603
CVR 203

86' : 17348+0601
STF2185AB

88' : 17311+0651
UC 3360

89' : 17325+0618
NSN 692

90' : 17380+0849
GRV 963

94' : 17427+0659
HEI 864

95' : 17377+0855
BRT2171AB

96' : 17420+0814
STF2193

103' : 17299+0747
CLZ 71

113' : 17382+0913
OSO 80

114' : 17404+0544
VVO 16

116' : 17398+0537
FMR 137

119' : 17293+0811
HU 176

119' : 17308+0844
J 2113AB



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.

17366+0723 A 1156 (HD 159857)

 
 
17h 36m 34.63s +07° 22' 31.2" P.A. 347.00 sep 0.2 mag 9.35,8.60 Sp A3 dist. 181.16 pc (590.94 l.y.)
 
 
Coord 2000 17366+0723 Discov num A  1156 Comp Coord arcsec 2000 17 36 34.63 +07 22 31.2
Date first 1905 Date last 2021 Obs 32
Pa first 172 Pa last 347.3 P.A. Now (θ) 342.9°
Sep first 0.3 Sep last 0.189 Sep. Now (ρ) 0.17"
Mag pri 9.35 Mag sec 8.60 delta mag (ΔM) 0.75 Spectral class A3 (white)
Pri motion ra -005 Sec motion ra
Pri motion dec -017 Sec motion dec
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 159857 Constellation Ophiuchus SAO 122561 HIP 86174
Tycho2 0426-01173-1 Gaia DR2 4486917463295231616 HD 159857 ADS 10659
BD BD+07 3413 Distance 181.16 Distance ly 590.94
 
 
ORBITAL ELEMENTS
 
 
Period (P)195.22y Periastron (T)2000y Semi-major axis (a)0.281a
Eccentricity (e)0.26 Inclination (i)95.5° Longitude of periastron (ω)156.8°
Node (Ω)168.3° Notes ReferenceDoc2015b
Equinox2000 Last observation2009 Grade3(1=Definitive, 9=Indet.)
label theta rho
2000 350.7 0.191
2001 350.3 0.196
2002 349.9 0.200
2003 349.6 0.203
2004 349.3 0.206
2005 349.0 0.208
2006 348.7 0.210
2007 348.4 0.211
2008 348.1 0.212
2009 347.8 0.212
2010 347.5 0.212
2011 347.2 0.212
2012 346.9 0.210
2013 346.6 0.209
2014 346.2 0.207
2015 345.9 0.204
2016 345.6 0.201
2017 345.3 0.198
2018 344.9 0.194
2019 344.5 0.190
2020 344.2 0.186
2021 343.8 0.181
2022 343.3 0.176
2023 342.9 0.170
2024 342.4 0.165
2025 341.9 0.159
2026 341.3 0.153
2027 340.7 0.146
2028 340.1 0.140
2029 339.4 0.133
2030 338.6 0.126


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


 
  


wds17366%2B0723a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 17366+0723 A 1156 (HD 159857) : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
Doc2015b orb - Docobo, J.A. & Ling, J.F. 2015IAUDS.185Q...1D
Doc2015b Inf. Circ. 185, 1, 2015
 
 
DISCOVERER
 
 
idgroup discov author
1 A Aitken, R.G.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
17366+0723 A 1156 2004 27 352 0.2 9.35 8.60 A3 NO 173634.63+072231.2
17366+0723 A 1156 2009 28 349 0.2 9.35 8.60 A3 NO 173634.63+072231.2
17366+0723 A 1156 2010 30 352 0.3 9.35 8.60 A3 O 173634.63+072231.2
17366+0723 A 1156 2021 31 347 0.2 9.35 8.60 A3 O 173634.63+072231.2

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

 
 
WDS 17366+0723 A 1156 (HD 159857) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 17366+0723 A 1156 (HD 159857) : MEASURES
 
 
No records found.

 
 
WDS 17366+0723 (HD 159857) : VIRTUAL EYEPIECE
 
 

17366+0723 A 1156A mag 9.35 Sp A3 17366+0723 A 1156B sep 0.2 P.A. 347.40 mag 8.6 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 17366+0723 (HD 159857) : ALADIN DSS IMAGE @ 17h 36m 34.63s +07° 22' 31.2"
 
 
 
 
WDS 17366+0723 A 1156 (HD 159857) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

17366+0723 A 1156 distance=0' 17365+0708 UC 3374 distance=15' 17372+0649 HEI 862 distance=35' 17389+0715 A 1158 distance=36' 17362+0646 GAU 16 distance=37' 17362+0637 STF2188 distance=46' 17332+0734 A 1153 distance=52' 17399+0748 HDS2499 distance=57' 17339+0806 SHY 726 distance=60' 17319+0701 TDT 398 distance=73' 17358+0608 TDT 424 distance=76' 17387+0613 A 1157 distance=77' 17338+0613 TDT 416 distance=81' 17355+0603 CVR 203 distance=81' 17348+0601 STF2185BC distance=85' 17348+0601 HDS2481Aa,Ab distance=86' 17348+0601 STF2185AB distance=86' 17348+0601 PWS 16AG distance=86' 17348+0601 PWS 16AH distance=86' 17348+0601 PWS 16AI distance=86' 17348+0601 PWS 16AJ distance=86' 17348+0601 PWS 16AK distance=86' 17348+0601 STF2185AC distance=86' 17348+0601 PWS 16AF distance=86' 17348+0601 STF2185CF distance=87' 17311+0651 UC 3360 distance=88' 17325+0618 NSN 692 distance=89' 17380+0849 GRV 963 distance=90' 17427+0659 HEI 864 distance=94' 17377+0855 BRT2171AB distance=95' 17420+0814 STF2193 distance=96' 17299+0747 CLZ 71 distance=103' 17382+0913 OSO 80 distance=113' 17404+0544 VVO 16 distance=114' 17398+0537 FMR 137 distance=116' 17293+0811 HU 176 distance=119' 17308+0844 J 2113AB distance=119' 17308+0844 J 2113AC distance=119' 17370+0524 GRV 962 distance=119' 17285+0722 LDS4743 distance=120' 17330+0913 HDS2477 distance=123' 17347+0922 TDS 873 distance=123' 17284+0730 GWP2713 distance=123' 17284+0742 LDS4742 distance=124' 17294+0824 J 3267 distance=124' 17386+0923 UC 3379 distance=125' 17442+0824 UC 3394 distance=129' 17280+0702 TDT 367 distance=130' 17430+0547 HDS2506 distance=136' 17346+0935 STFA 34BD distance=136' 17346+0935 YSC 63Aa,Ab distance=136' 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 17366+0723 A 1156 347 0.2
Show 17365+0708 UC 3374 35 51.4 15
Show 17372+0649 HEI 862 67 2.8 35
Show 17389+0715 A 1158 108 4.7 36
Show 17362+0646 GAU 16 175 8.4 37
Show 17362+0637 STF2188 203 5.5 46
Show 17332+0734 A 1153 105 1.1 52
Show 17399+0748 HDS2499 243 0.7 57
Show 17339+0806 SHY 726 12 229.2 60
Show 17319+0701 TDT 398 65 1.6 73
Show 17358+0608 TDT 424 275 0.3 76
Show 17387+0613 A 1157 265 1.3 77
Show 17338+0613 TDT 416 48 5.3 81
Show 17355+0603 CVR 203 237 27.0 81
Show 17348+0601 STF2185 BC 239 105.9 85
Show 17348+0601 HDS2481 Aa,Ab 290 0.2 86
Show 17348+0601 STF2185 AB 5 27.2 86
Show 17348+0601 PWS 16 AG 308 59.4 86
Show 17348+0601 PWS 16 AH 335 188.3 86
Show 17348+0601 PWS 16 AI 340 187.2 86
Show 17348+0601 PWS 16 AJ 340 161.1 86
Show 17348+0601 PWS 16 AK 17 153.2 86
Show 17348+0601 STF2185 AC 253 93.2 86
Show 17348+0601 PWS 16 AF 193 212.7 86
Show 17348+0601 STF2185 CF 166 186.3 87
Show 17311+0651 UC 3360 13 75.6 88
Show 17325+0618 NSN 692 311 2.9 89
Show 17380+0849 GRV 963 30 66.4 90
Show 17427+0659 HEI 864 350 2.9 94
Show 17377+0855 BRT2171 AB 319 3.5 95
Show 17420+0814 STF2193 65 5.9 96
Show 17299+0747 CLZ 71 306 6.9 103
Show 17382+0913 OSO 80 299 7.8 113
Show 17404+0544 VVO 16 342 34.8 114
Show 17398+0537 FMR 137 250 9.3 116
Show 17293+0811 HU 176 330 0.3 119
Show 17308+0844 J 2113 AB 280 2.8 119
Show 17308+0844 J 2113 AC 279 37.3 119
Show 17370+0524 GRV 962 166 20.9 119
Show 17285+0722 LDS4743 250 2.2 120
Show 17330+0913 HDS2477 137 0.4 123
Show 17347+0922 TDS 873 356 1.0 123
Show 17284+0730 GWP2713 161 105.4 123
Show 17284+0742 LDS4742 92 311.9 124
Show 17294+0824 J 3267 317 6.5 124
Show 17386+0923 UC 3379 124 58.0 125
Show 17442+0824 UC 3394 202 10.6 129
Show 17280+0702 TDT 367 187 2.1 130
Show 17430+0547 HDS2506 81 0.2 136
Show 17346+0935 STFA 34 BD 223 90.6 136
Show 17346+0935 YSC 63 Aa,Ab 281 0.4 136

 
 
WDS 17366+0723 : COMPONENTS
 
 
  A
B pa=347.4°
sep=0.19"
 
 
17366+0723 A
 
 
Componente originario normalizzato AB Name HD 159857 Coord arcsec 2000 173634.63+072231.2 Mag 9.35
Spectral class A3 (white) PmRA -5.00 PmDE -17.0 SAO 122561
HIP 86174 HD 159857 BD BD+07 3413
SAO
SAO 122561 DelFlag RA1950 PmRA1950 -0.0005
DE1950 PmDE1950 0.009 Vmag 8.6 SpType A3
Double code Source 32 CatNum 7932 DM BD+07 3413
DMcomp BDsup HD 159857 M HD 0
GC RA1950rad 4.59963024 DE1950rad 0.12924469 PmRA2000 -0.0004
PmDE2000 0.009
Hipparcos
Catalog H HIP 86174 Proxy H RAhms 17 36 34.63
DEdms +07 22 31.2 Vmag 8.08 VarFlag R Vmag H
RAdeg 264.144 DEdeg 7.37532 AstroRef * Plx 4.51
CCDM 17366+0722 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source S Qual A M HIP BA
Theta 355 Rho 0.136 HD 159857 BD BD+07 3413
CD CP Dm number +07 3413 VIred 0.36
SpType A3 R SpType Coord arcsec 2000 173634.63+072231.2
Hipparcos 2
HIP 86174 Sn 55 So 3 Nc 2
RArad 4.6101875707 DErad 0.1287236185 Plx 5.52 PmRA 3.2
PmDE 10.82 E RArad 0.64 E DErad 0.51 E Plx 0.8
E pmRA 0.73 E pmDE 0.54 Hpmag 8.1586 E Hpmag 0.0013
SHp 0.013 VA 0 BV 0.306 E BV 0.012
VI 0.35
 
 
17366+0723 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 173634.63+072231.4 Mag 8.6 Tycho2 0426-01173-1
Calc delta mag 0.75 Calc coord yes
Tycho2
Tycho2 0426-01173-1 Pflag RAmdeg 264.14430233 DEmdeg 7.37534132
PmRA 4.9 PmDE 9.1 E RAmdeg 5 E DEmdeg 6
E pmRA 1.8 E pmDE 1.8 EpRAm 1991.34 EpDEm 1991.13
Num 8 Q RAmdeg 0.6 Q DEmdeg 1.0 Q pmRA 0.7
Q pmDE 1.1 BTmag 8.447 E BTmag 0.016 VTmag 8.111
E VTmag 0.012 Prox 999 TYC T HIP 86174
CCDM AB RAdeg 264.14429083 DEdeg 7.37531972 EpRA 1990 1.57
EpDE 1990 1.36 E RAdeg 5.2 E DEdeg 5.8 Posflg P
Corr 0.2