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Current system
17210-2107
DON 832 AB
Xi Oph


Nearby doubles
20' : 17200-2119
RST3086

27' : 17221-2044
SEE 326

29' : 17226-2049
DON 833

29' : 17200-2132
HU 750

37' : 17221-2138
LDS 594

43' : 17190-2034
RSS 435

48' : 17189-2029
ARA1124

50' : 17228-2024
TDT 327

51' : 17238-2138
HDS2456

52' : 17236-2143
HLD 133

56' : 17247-2126
HLD 134

67' : 17226-2004
B 2834

69' : 17189-2005
ARA 713

70' : 17200-1959
I 592

72' : 17159-2056
REP 47

73' : 17250-2022
DON 838

73' : 17257-2138
TDT 345

77' : 17264-2123
OCC1097

83' : 17267-2128
OCC9164

86' : 17245-2217
RST3094

88' : 17199-1941
A 2240

89' : 17200-2234
RST3087

93' : 17226-1937
MOC 12AB

94' : 17152-2154
KPP4030

96' : 17151-2156
HU 749

98' : 17178-1940
BHA 18



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

17210-2107 DON 832 AB (Xi Oph)

 
 
17h 21m 00.37s -21° 06' 46.5" P.A. 26.00 sep 4.1 mag 4.40,8.90 Sp F1III-IV dist. 17.36 pc (56.63 l.y.)
 
 
Coord 2000 17210-2107 Discov num DON 832 Comp AB Coord arcsec 2000 17 21 00.37 -21 06 46.5
Date first 1932 Date last 2016 Obs 18
Pa first 66 Pa last 26.3 P.A. Now (θ) 26.3°
Sep first 2.5 Sep last 4.083 Sep. Now (ρ) 4.083"
Mag pri 4.40 Mag sec 8.90 delta mag (ΔM) 4.5 Spectral class F1III-IV (yellow-white)
Pri motion ra +256 Sec motion ra
Pri motion dec -211 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
17210-2107 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show Xi Oph 185296 17 21 00 -21 06 46 DON 832 AB 2016 18 26 4.1 4.40 8.90 4.50 Y <===
Show 185296 17 21 00 -21 06 46 TNN 8 AC 2004 1 261 10.8 3.07 13.74 10.67
Triple system
3 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name Xi Oph Constellation Ophiuchus SAO 185296 HIP 84893
Tycho2 6246-00664-1 HD 156897 HR 6445 GC 23423
GL Gl 670A BD BD-20 4731 Bayer Xi Ophiuchi Bayer name Xi Oph
Flamsteed 40 Ophiuchi Flamsteed name 40 Oph Distance 17.36 Distance ly 56.63
Bayer greek ξ Oph
 
 
ORBITAL ELEMENTS
 
 
Period (P)421.5869y± 221.2186 Periastron (T)2026.7466y± 8.4825 Semi-major axis (a)7.90942a± 5.0354
Eccentricity (e)0.73578± 0.20556 Inclination (i)99.36°± 5.068 Longitude of periastron (ω)75.752°± 19.221
Node (Ω)28.815°± 4.745 Notesn ReferenceIzm2019
Equinox Last observation2010 Grade5(1=Definitive, 9=Indet.)
label theta rho
2000 35.3 4.046
2001 35.0 4.017
2002 34.6 3.984
2003 34.2 3.946
2004 33.8 3.905
2005 33.4 3.859
2006 33.0 3.807
2007 32.6 3.750
2008 32.2 3.687
2009 31.8 3.617
2010 31.3 3.540
2011 30.8 3.456
2012 30.3 3.363
2013 29.8 3.261
2014 29.2 3.149
2015 28.6 3.027
2016 27.9 2.892
2017 27.2 2.746
2018 26.4 2.586
2019 25.4 2.411
2020 24.3 2.222
2021 23.0 2.017
2022 21.4 1.797
2023 19.3 1.562
2024 16.4 1.315
2025 12.2 1.058
2026 5.2 0.798
2027 351.7 0.551
2028 321.6 0.370
2029 274.8 0.379
2030 246.5 0.569


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


 
  


wds17210-2107a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 17210-2107 DON 832 AB (Xi Oph) : NOTES
 
 
discov_num notes refcode
DON 832 xi Oph = 40 Oph
 
 
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 DON Donner, H.F.
6 TNN Tanner, A.M., Gelino, C.R., & Law, N.M.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
17210-2107 DON 832 AB 2010 16 29 3.5 4.40 8.90 F1III-IV N 172100.37-210646.5
17210-2107 DON 832 AB 2015 17 27 4.1 4.40 8.90 F1III-IV N 172100.37-210646.5
17210-2107 DON 832 AB 2016 18 26 4.1 4.40 8.90 F1III-IV NO 172100.37-210646.5

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

 
 
WDS 17210-2107 DON 832 AB (Xi Oph) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 17210-2107 DON 832 AB (Xi Oph) : MEASURES
 
 
No records found.

 
 
WDS 17210-2107 (Xi Oph) : VIRTUAL EYEPIECE
 
 

17210-2107 DON 832A mag 4.4 Sp F1III 17210-2107 DON 832B sep 4.0 P.A. 24.80 mag 8.9 Sp IV 17210-2107 TNN 8C sep 10.1 P.A. 260.50 mag 13.74 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 17210-2107 (Xi Oph) : ALADIN DSS IMAGE @ 17h 21m 00.37s -21° 06' 46.5"
 
 
 
 
WDS 17210-2107 DON 832 AB (Xi Oph) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

17210-2107 DON 832AB distance=0' 17200-2119 RST3086 distance=20' 17221-2044 SEE 326 distance=27' 17226-2049 DON 833 distance=29' 17200-2132 HU 750 distance=29' 17221-2138 LDS 594 distance=37' 17190-2034 RSS 435 distance=43' 17189-2029 ARA1124 distance=48' 17228-2024 TDT 327 distance=50' 17238-2138 HDS2456 distance=51' 17236-2143 HLD 133 distance=52' 17247-2126 HLD 134 distance=56' 17226-2004 B 2834 distance=67' 17189-2005 ARA 713 distance=69' 17200-1959 I 592 distance=70' 17159-2056 REP 47 distance=72' 17250-2022 DON 838 distance=73' 17257-2138 TDT 345 distance=73' 17264-2123 OCC1097 distance=77' 17267-2128 OCC9164 distance=83' 17245-2217 RST3094 distance=86' 17199-1941 A 2240 distance=88' 17200-2234 RST3087 distance=89' 17226-1937 MOC 12AB distance=93' 17226-1937 MOC 12AC distance=93' 17226-1937 MOC 12AD distance=93' 17152-2154 KPP4030 distance=94' 17151-2156 HU 749 distance=96' 17178-1940 BHA 18 distance=98' 17150-2203 B 2828AB distance=101' 17150-2203 B 2828AC distance=101' 17283-2058 A 2244AB distance=103' 17283-2058 OCC1098Aa,Ab distance=103' 17233-1927 HDS2455 distance=105' 17150-2210 ARA1816 distance=105' 17185-2245 KIR 25 distance=106' 17268-1959 I 599 distance=106' 17216-2252 TDT 320 distance=106' 17206-1920 A 2241AB distance=107' 17206-1920 OCC 529Aa,Ab distance=107' 17133-2058 ARA1123 distance=109' 17179-2247 ARA1818 distance=109' 17244-2248 B 339AB distance=112' 17244-2248 HJ 4948AC distance=112' 17151-1951 B 336AB distance=113' 17151-1951 B 336BC distance=113' 17165-2245 ARA1817 distance=116' 17188-1915 I 591 distance=116' 17293-2115 OCC 410 distance=116' 17125-2109 HDS2432 distance=120' 17127-2136 OCC1096 distance=121' 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 17210-2107 DON 832 AB 26 4.1
Show 17210-2107 TNN 8 AC 261 10.8
Show 17200-2119 RST3086 265 2.6 20
Show 17221-2044 SEE 326 7 0.9 27
Show 17226-2049 DON 833 257 7.8 29
Show 17200-2132 HU 750 112 1.9 29
Show 17221-2138 LDS 594 99 4.8 37
Show 17190-2034 RSS 435 303 19.8 43
Show 17189-2029 ARA1124 73 6.6 48
Show 17228-2024 TDT 327 83 0.6 50
Show 17238-2138 HDS2456 205 0.1 51
Show 17236-2143 HLD 133 171 0.9 52
Show 17247-2126 HLD 134 140 4.5 56
Show 17226-2004 B 2834 354 6.5 67
Show 17189-2005 ARA 713 300 7.1 69
Show 17200-1959 I 592 270 14.7 70
Show 17159-2056 REP 47 66 4.4 72
Show 17250-2022 DON 838 340 0.4 73
Show 17257-2138 TDT 345 303 1.7 73
Show 17264-2123 OCC1097 -1 0.0 77
Show 17267-2128 OCC9164 -1 0.1 83
Show 17245-2217 RST3094 16 1.0 86
Show 17199-1941 A 2240 203 1.6 88
Show 17200-2234 RST3087 29 1.0 89
Show 17226-1937 MOC 12 AB 14 2.8 93
Show 17226-1937 MOC 12 AC 241 4.3 93
Show 17226-1937 MOC 12 AD 177 5.0 93
Show 17152-2154 KPP4030 289 3.1 94
Show 17151-2156 HU 749 151 1.9 96
Show 17178-1940 BHA 18 40 6.0 98
Show 17150-2203 B 2828 AB 192 5.7 101
Show 17150-2203 B 2828 AC 74 8.3 101
Show 17283-2058 A 2244 AB 51 0.1 103
Show 17283-2058 OCC1098 Aa,Ab -1 0.1 103
Show 17233-1927 HDS2455 314 0.4 105
Show 17150-2210 ARA1816 345 14.1 105
Show 17185-2245 KIR 25 329 54.3 106
Show 17268-1959 I 599 133 2.2 106
Show 17216-2252 TDT 320 71 0.5 106
Show 17206-1920 A 2241 AB 70 5.3 107
Show 17206-1920 OCC 529 Aa,Ab -1 1.3 107
Show 17133-2058 ARA1123 119 13.3 109
Show 17179-2247 ARA1818 61 8.5 109
Show 17244-2248 B 339 AB 207 3.6 112
Show 17244-2248 HJ 4948 AC 106 13.3 112
Show 17151-1951 B 336 AB 230 9.7 113
Show 17151-1951 B 336 BC 163 3.7 113
Show 17165-2245 ARA1817 167 11.6 116
Show 17188-1915 I 591 36 1.1 116
Show 17293-2115 OCC 410 -1 0.1 116
Show 17125-2109 HDS2432 65 11.3 120

 
 
WDS 17210-2107 : COMPONENTS
 
 
  A B
B pa=24.8°
sep=4.03"
 
C pa=260.5°
sep=10.08"
pa=245.4°
sep=12.80"
 
 
17210-2107 A
 
 
Name Xi Oph Coord arcsec 2000 172100.37-210646.5 Mag 4.4 Spectral class F1III (yellow-white)
PmRA 256.00 PmDE -211.0 SAO 185296 HIP 84893
Tycho2 6246-00664-1 HD 156897 HR 6445 GC 23423
BD BD-20 4731 Bayer Xi Ophiuchi Bayer name Xi Flamsteed 40 Ophiuchi
Flamsteed name 40 Oph
Tycho2
Tycho2 6246-00664-1 Pflag X RAmdeg DEmdeg
PmRA PmDE E RAmdeg E DEmdeg
E pmRA E pmDE EpRAm EpDEm
Num Q RAmdeg Q DEmdeg Q pmRA
Q pmDE BTmag 4.822 E BTmag 0.014 VTmag 4.431
E VTmag 0.009 Prox 999 TYC HIP 84893
CCDM RAdeg 260.25092028 DEdeg -21.11243444 EpRA 1990 1.81
EpDE 1990 1.25 E RAdeg 3.2 E DEdeg 3.6 Posflg
Corr 0.2
SAO
SAO 185296 DelFlag RA1950 PmRA1950 0.0165
DE1950 PmDE1950 -0.209 Vmag 4.5 SpType F5
Double code Source 70 CatNum 23423 DM BD-20 4731
DMcomp BDsup HD 156897 M HD 0
GC 23423 RA1950rad 4.52914764 DE1950rad -0.36758438 PmRA2000 0.0166
PmDE2000 -0.206
Hipparcos
Catalog H HIP 84893 Proxy RAhms 17 21 00.21
DEdms -21 06 44.8 Vmag 4.39 VarFlag R Vmag G
RAdeg 260.251 DEdeg -21.1124 AstroRef Plx 57.48
CCDM 17210-2107 N CCDM I Nsys 1 Ncomp 1
MultFlag Source Qual M HIP
Theta Rho HD 156897 BD BD-20 4731
CD CP Dm number -20 4731 VIred 0.47
SpType F2/F3V R SpType Coord arcsec 2000 172100.21-210644.8
Hipparcos 2
HIP 84893 Sn 5 So 0 Nc 1
RArad 4.5422346659 DErad -0.3684814995 Plx 57.62 PmRA 263.84
PmDE -205.85 E RArad 0.24 E DErad 0.18 E Plx 0.26
E pmRA 0.33 E pmDE 0.21 Hpmag 4.4704 E Hpmag 0.0006
SHp 0.004 VA 0 BV 0.394 E BV 0.019
VI 0.47
CCDM
Ccdm 17210-2107 RComp Comp A Note1
Note2 Discov num DRAs 0.22 DDEs 13.7
R dRAs 10 Year Theta Rho
Obs 2 Vmag 4.5 Sp F2 PmNote *
PmRA 232 PmDE -209 Dm number -20 4731 Cat1 BD
Name2 185296 Cat2 SAO HD 156897 M HD
ADS BDS M ADS BDS N IDS IDS 17150S2100A
HIC 84893
 
 
17210-2107 B
 
 
Coord arcsec 2000 172100.49-210642.8 Mag 8.9 Spectral class IV Calc delta mag 4.5
Calc coord yes
CCDM
Ccdm 17210-2107 RComp Comp B Note1
Note2 Discov num DON 832 DRAs DDEs
R dRAs Year 1959 Theta 050 Rho 3.7
Obs 8 Vmag 9.0 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS M ADS BDS N IDS IDS 17150S2100B
HIC 84893
 
 
17210-2107 C
 
 
Coord arcsec 2000 172059.66-210648.2 Mag 13.74 Calc delta mag 9.34 Calc coord yes