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Doubles in session


Current system
18122+0814
HDS 2568 AB
HD 166844


Nearby doubles
28' : 18133+0752
RAO 606

36' : 18098+0815
GWP2764

43' : 18106+0738
HDS2562AB

49' : 18095+0748
LDS5229

55' : 18133+0906
HDS2573

57' : 18159+0823
LDS5231

61' : 18149+0859
HU 196

62' : 18140+0718
LDS5230

67' : 18166+0807
KPP1764

70' : 18093+0909
RUC 24AB

74' : 18140+0922
TDT 753

75' : 18119+0928
TDT 733

78' : 18123+0656
DBR 289

82' : 18158+0711
LDS5232

85' : 18172+0735
J 2514

87' : 18091+0924
PRY 3

89' : 18068+0853
ENG 63AB

90' : 18109+0941
TDT 726

95' : 18163+0702
LDS5233

96' : 18136+0946
HDS2574

108' : 18065+0920
ARN9001AB

108' : 18073+0934
STT 342AB

109' : 18184+0716
HEI 868

111' : 18181+0709
LDS5234

113' : 18077+0946
BU 826

115' : 18117+1008
TDT 731



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.

18122+0814 HDS 2568 AB (HD 166844)

 
 
18h 12m 10.31s +08° 13' 37.8" P.A. 263.00 sep 0.6 mag 7.39,10.62 Sp K0 dist. 157.48 pc (513.7 l.y.)
 
 
Coord 2000 18122+0814 Discov num HDS2568 Comp AB Coord arcsec 2000 18 12 10.31 +08 13 37.8
Date first 1991 Date last 2013 Obs 5
Pa first 264 Pa last 263 P.A. Now (θ) 263°
Sep first 0.5 Sep last 0.608 Sep. Now (ρ) 0.608"
Mag pri 7.39 Mag sec 10.62 delta mag (ΔM) 3.23 Spectral class K0 (yellow-orange)
Pri motion ra -016 Sec motion ra
Pri motion dec -051 Sec motion dec
Notes
Nature of this double is uncertain.
 
 
18122+0814 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 123239 18 12 10 +08 13 38 GII 261 Aa,Ab 2013 1 39 0.2 8.10 8.10 0.00
Show HD 166844 123239 18 12 10 +08 13 38 HDS 2568 AB 2013 5 263 0.6 7.39 10.62 3.23 <===
Triple system
2 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 166844 Constellation Ophiuchus SAO 123239 HIP 89195
Tycho2 1009-01829-1 HD 166844 GC 24825 BD BD+08 3610
Distance 157.48 Distance ly 513.7
 
 
WDS 18122+0814 HDS 2568 AB (HD 166844) : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
Gii1991 Ma j Gili, R. 1991AN....312...41G
Gii1991 AN 312, 41, 1991
Gii1994 M+ j Gili, R. (Couteau & Gili) 1994A&AS..106..377G
Gii1994 +C A&AS 106, 377, 1994
Gii1997 M+ j Gili, R. & Couteau, P. 1997A&AS..126....1G
Gii1997 +C A&AS 126, 1, 1997
Gii2001 C j Gili, R. & Bonneau, D. 2001A&A...378..954G
Gii2001 A&A 378, 954, 2001
Gii2008 C j Gili, R. 2008IAUDS.165....1G
Gii2008 Inf. Circ. 165, 1, 2008
Gii2009 S j Gili, R. 2009IAUDS.168....1G
Gii2009 +orb Inf. Circ. 168, 1, 2009
Gii2009b C j Gili, R. & Agati, J.-L. 2009O&T....73....9G
Gii2009b +S Obs. et Travaux 73, 9, 2009
Gii2009c C j Gili, R. & Agati, J.-L. 2009O&T....74...14G
Gii2009c +S Obs. et Travaux 74, 14, 2009
Gii2012 S j Gili, R. & Prieur, J.-L. 2012AN....333..727G
Gii2012 +Cl AN 333, 727, 2012
Gii2016 S j Gili, R. 2016IAUDS.190....4G
Gii2016 +Cl Inf. Circ. 190, 4, 2016
Gii2016b Cl Gili, R.
Gii2016b private comm. (email 27 Aug 2016)
Gii2020 S Gili, R., Prieur, J.-L., Rivet, J.-P., Scardia, M., Pansecchi, L., Argyle, R.W., 2020AN....341..441G
Gii2020 +Cl Ling, J.F., Piccotti, L., Aristidi, E., Koechlin, L., Bonneau, D. & Maccarini, L.
Gii2020 AN 341, 441, 2020
Gii2021 S Gili, R., Prieur, J.-L., Rivet, J.-P., Vakili, F., Scardia, M., Pansecchi, L., 2021AN....342..865G
Gii2021 Argyle, R.W., Ling, J.F., Piccotti, L., Aristidi, E., Koechlin, L., Bonneau, D.,
Gii2021 Maccarini, L. & Serot, J.
Gii2021 AN 342, 865, 2021
Gii2022 S Gili, R., Prieur, J.-L., Rivet, J.-P., Vakili, F., Scardia, M., Pansecchi, L., 2022AN....34324008G
Gii2022 Argyle, R.W., Ling, J.F., Piccotti, L., Aristidi, E., Koechlin, L., Bonneau, D.,
Gii2022 Maccarini, L. & Serot, J.
Gii2022 AN 343, 24008, 2022
Gii2022 errata for Gii2022 (source of code "P" measures in wds) 2023AN....34437001G
Gii2022 AN 344, 37001, 2023
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
18122+0814 HDS2568 AB 2013 5 263 0.6 7.39 10.62 K0 181210.31+081337.8

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

 
 
WDS 18122+0814 HDS 2568 AB (HD 166844) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 18122+0814 HDS 2568 AB (HD 166844) : MEASURES
 
 
No records found.

 
 
WDS 18122+0814 (HD 166844) : VIRTUAL EYEPIECE
 
 

18122+0814 HDS2568A mag 7.39 Sp K0 18122+0814 GII 261Ab sep 0.2 P.A. 38.70 mag 8.1 18122+0814 HDS2568B sep 0.6 P.A. 262.90 mag 10.62 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 18122+0814 (HD 166844) : ALADIN DSS IMAGE @ 18h 12m 10.31s +08° 13' 37.8"
 
 
 
 
WDS 18122+0814 HDS 2568 AB (HD 166844) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

18122+0814 HDS2568AB distance=0' 18133+0752 RAO 606 distance=28' 18098+0815 GWP2764 distance=36' 18106+0738 HDS2562AB distance=43' 18106+0738 GII 260Aa,Ab distance=43' 18095+0748 LDS5229 distance=49' 18133+0906 HDS2573 distance=55' 18159+0823 LDS5231 distance=57' 18149+0859 HU 196 distance=61' 18140+0718 LDS5230 distance=62' 18166+0807 KPP1764 distance=67' 18093+0909 RUC 24AB distance=70' 18093+0909 RUC 24AC distance=70' 18140+0922 TDT 753 distance=74' 18119+0928 TDT 733 distance=75' 18123+0656 DBR 289 distance=78' 18158+0711 LDS5232 distance=82' 18172+0735 J 2514 distance=85' 18091+0924 PRY 3 distance=87' 18068+0853 ENG 63AB distance=89' 18068+0853 SLE 133AD distance=89' 18068+0853 SLE 133AE distance=89' 18068+0853 BUP 179AC distance=89' 18068+0853 SLE 133AF distance=89' 18068+0853 DEA 58AH distance=89' 18068+0853 TOK 696Aa,Ab distance=89' 18109+0941 TDT 726 distance=90' 18068+0853 SLE 133BF distance=90' 18068+0853 BUP 179BG distance=90' 18163+0702 LDS5233 distance=95' 18136+0946 HDS2574 distance=96' 18065+0920 HZG 12BC distance=107' 18065+0920 TOB 270CD distance=107' 18065+0920 ARN9001AB distance=108' 18065+0920 TOB 270AD distance=108' 18073+0934 STT 342AB distance=108' 18073+0934 STT 342AC distance=108' 18073+0934 DAL 36AD distance=108' 18073+0934 STT 342Aa,Ab distance=108' 18184+0716 HEI 868 distance=109' 18181+0709 LDS5234 distance=111' 18077+0946 BU 826 distance=113' 18117+1008 TDT 731 distance=115' 18199+0801 TDT 800 distance=115' 18165+0637 TDS 912 distance=117' 18154+1001 HEI 800 distance=118' 18201+0807 SLE 154 distance=119' 18192+0716 HJ 5494 distance=119' 18200+0858 SLE 153 distance=125' 18115+1020 TDT 730 distance=127' 18116+0606 CFN 14 distance=128' 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 18122+0814 HDS2568 AB 263 0.6
Show 18122+0814 GII 261 Aa,Ab 39 0.2
Show 18133+0752 RAO 606 34 0.9 28
Show 18098+0815 GWP2764 319 43.7 36
Show 18106+0738 HDS2562 AB 245 0.9 43
Show 18106+0738 GII 260 Aa,Ab 38 0.2 43
Show 18095+0748 LDS5229 210 2.4 49
Show 18133+0906 HDS2573 165 0.9 55
Show 18159+0823 LDS5231 127 3.6 57
Show 18149+0859 HU 196 1 0.1 61
Show 18140+0718 LDS5230 51 5.1 62
Show 18166+0807 KPP1764 345 13.7 67
Show 18093+0909 RUC 24 AB 6 8.3 70
Show 18093+0909 RUC 24 AC 36 22.7 70
Show 18140+0922 TDT 753 189 0.5 74
Show 18119+0928 TDT 733 258 0.4 75
Show 18123+0656 DBR 289 242 1.3 78
Show 18158+0711 LDS5232 270 5.2 82
Show 18172+0735 J 2514 303 1.8 85
Show 18091+0924 PRY 3 329 4.6 87
Show 18068+0853 ENG 63 AB 247 129.1 89
Show 18068+0853 SLE 133 AD 10 127.1 89
Show 18068+0853 SLE 133 AE 76 148.9 89
Show 18068+0853 BUP 179 AC 316 79.9 89
Show 18068+0853 SLE 133 AF 334 172.8 89
Show 18068+0853 DEA 58 AH 169 8.0 89
Show 18068+0853 TOK 696 Aa,Ab 207 0.0 89
Show 18109+0941 TDT 726 67 0.9 90
Show 18068+0853 SLE 133 BF 12 210.5 90
Show 18068+0853 BUP 179 BG 37 80.0 90
Show 18163+0702 LDS5233 22 4.8 95
Show 18136+0946 HDS2574 313 0.5 96
Show 18065+0920 HZG 12 BC 218 136.5 107
Show 18065+0920 TOB 270 CD 188 76.4 107
Show 18065+0920 ARN9001 AB 114 38.2 108
Show 18065+0920 TOB 270 AD 197 206.3 108
Show 18073+0934 STT 342 AB 298 25.0 108
Show 18073+0934 STT 342 AC 163 64.3 108
Show 18073+0934 DAL 36 AD 48 24.2 108
Show 18073+0934 STT 342 Aa,Ab 156 1.6 108
Show 18184+0716 HEI 868 115 1.2 109
Show 18181+0709 LDS5234 31 3.9 111
Show 18077+0946 BU 826 315 0.8 113
Show 18117+1008 TDT 731 90 2.3 115
Show 18199+0801 TDT 800 175 0.9 115
Show 18165+0637 TDS 912 198 1.2 117
Show 18154+1001 HEI 800 84 0.3 118
Show 18201+0807 SLE 154 263 10.0 119
Show 18192+0716 HJ 5494 73 43.3 119
Show 18200+0858 SLE 153 219 10.0 125
Show 18115+1020 TDT 730 226 0.5 127

 
 
WDS 18122+0814 : COMPONENTS
 
 
  A Ab
Ab pa=38.7°
sep=0.18"
 
B pa=262.9°
sep=0.60"
pa=253.4°
sep=0.74"
 
 
18122+0814 A
 
 
Name HD 166844 Coord arcsec 2000 181210.31+081337.8 Mag 7.39 Spectral class K0 (yellow-orange)
PmRA -16.00 PmDE -51.0 SAO 123239 HIP 89195
Tycho2 1009-01829-1 HD 166844 GC 24825 BD BD+08 3610
Tycho2
Tycho2 1009-01829-1 Pflag RAmdeg 273.04294448 DEmdeg 8.22704067
PmRA -12.3 PmDE -52.1 E RAmdeg 6 E DEmdeg 6
E pmRA 1.4 E pmDE 1.3 EpRAm 1991.42 EpDEm 1991.31
Num 13 Q RAmdeg 0.7 Q DEmdeg 0.7 Q pmRA 0.8
Q pmDE 0.8 BTmag 8.913 E BTmag 0.020 VTmag 7.342
E VTmag 0.012 Prox 999 TYC T HIP 89195
CCDM AB RAdeg 273.04297278 DEdeg 8.22716056 EpRA 1990 1.80
EpDE 1990 1.70 E RAdeg 6.0 E DEdeg 6.4 Posflg P
Corr 0.1
SAO
SAO 123239 DelFlag RA1950 PmRA1950 -0.0018
DE1950 PmDE1950 -0.049 Vmag 7.2 SpType K0
Double code Source 70 CatNum 24825 DM BD+08 3610
DMcomp BDsup HD 166844 M HD 0
GC 24825 RA1950rad 4.75501594 DE1950rad 0.14336817 PmRA2000 -0.0016
PmDE2000 -0.05
Hipparcos
Catalog H HIP 89195 Proxy H RAhms 18 12 10.31
DEdms +08 13 37.8 Vmag 7.18 VarFlag R Vmag H
RAdeg 273.043 DEdeg 8.22717 AstroRef A Plx 5.26
CCDM 18122+0814 N CCDM H Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 264 Rho 0.493 HD 166844 BD BD+08 3610
CD CP Dm number +08 3610 VIred 1.26
SpType K0 R SpType Coord arcsec 2000 181210.31+081337.8
Hipparcos 2
HIP 89195 Sn 15 So 3 Nc 2
RArad 4.7654989819 DErad 0.1435911727 Plx 6.35 PmRA -16.15
PmDE -50.65 E RArad 0.68 E DErad 0.65 E Plx 0.84
E pmRA 0.82 E pmDE 0.79 Hpmag 7.3321 E Hpmag 0.0017
SHp 0.009 VA 0 BV 1.312 E BV 0.015
VI 1.27
CCDM
Ccdm 18122+0814 RComp Comp A Note1
Note2 Discov num DRAs -1.70 DDEs -22.6
R dRAs 82 Year Theta Rho
Obs 2 Vmag 7.4 Sp K0 PmNote *
PmRA -16 PmDE -51 Dm number +08 3610 Cat1 BD
Name2 +08 2251 Cat2 AGK2/3 HD 166844 M HD
ADS BDS M ADS BDS N IDS IDS
HIC 89195
 
 
18122+0814 Ab
 
 
Coord arcsec 2000 181210.32+081337.9 Mag 8.1 Calc coord yes
 
 
18122+0814 B
 
 
Coord arcsec 2000 181210.27+081337.7 Mag 10.62 Calc delta mag 2.52 Calc coord yes
CCDM
Ccdm 18122+0814 RComp Comp B Note1
Note2 Discov num HDS DRAs -1.73 DDEs -22.7
R dRAs 82 Year 1991 Theta 264 Rho 0.5
Obs 1 Vmag 10.6 Sp PmNote *
PmRA -16 PmDE -51 Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS M ADS BDS N IDS IDS
HIC 89195