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Doubles in session


Current system
18181-0120
HDS 2587 AB
HD 168073


Nearby doubles
16' : 18185-0105
TDT 786

47' : 18210-0101
WOR 35

62' : 18222-0119
BAL 580

74' : 18155-0220
LDS6324

86' : 18163+0000
J 2512

87' : 18148-0231
A 84

95' : 18119-0104
RST5107

104' : 18250-0135
AC 11

105' : 18146+0011
STF2294

106' : 18213-0254
STFB 8

108' : 18140+0009
BAL1193

109' : 18252-0143
LSC 156

124' : 18175-0323
HTP 45AB

127' : 18157-0321
STF2296

134' : 18110-0000
RST5106

136' : 18213-0047
RST5111

140' : 18166-0058
RST5109

141' : 18117-0023
TDT 732

143' : 18265-0226
GRV1262

144' : 18133-0324
RST4583

146' : 18110-0020
NSN 151

154' : 18126-0329
A 83

156' : 18264-0254
A 85

160' : 18269+0009
BAL1195

160' : 18099-0302
BRT 475

162' : 18104+0033
STF2286



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.

18181-0120 HDS 2587 AB (HD 168073)

 
 
18h 18m 05.51s -01° 19' 48.5" P.A. 181.00 sep 0.1 mag 7.78,9.34 Sp A0 dist. 227.79 pc (743.05 l.y.)
 
 
Coord 2000 18181-0120 Discov num HDS2587 Comp AB Coord arcsec 2000 18 18 05.51 -01 19 48.5
Date first 1991 Date last 2019 Obs 7
Pa first 350 Pa last 181.4 P.A. Now (θ) 181.4°
Sep first 0.1 Sep last 0.103 Sep. Now (ρ) 0.103"
Mag pri 7.78 Mag sec 9.34 delta mag (ΔM) 1.56 Spectral class A0 (white)
Pri motion ra +002 Sec motion ra
Pri motion dec +002 Sec motion dec
Notes O (Orbital solution)
This double is physical.
 
 
18181-0120 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show HD 168073 142206 18 18 06 -01 19 48 HDS 2587 AB 2019 7 181 0.1 7.78 9.34 1.56 Y <===
Show 142206 18 18 06 -01 19 48 GII 265 AC 2013 1 167 1.8 7.78
Triple system
3 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 168073 Constellation Serpens SAO 142206 HIP 89680
Tycho2 5098-00553-1 HD 168073 BD BD-01 3469 Distance 227.79
Distance ly 743.05
 
 
SUSPECTED ORBITAL ELEMENTS
 
 
Identifier18181-0120 HDS2587
coord_arcsec_2000181805.51-011948.5
Period (P)72.865y Periastron (T)2011.774y Semi-major axis (a)0.13a
Eccentricity (e)0.3 Inclination (i)55.5° Longitude of periastron (ω)100.2°
Node (Ω)8.8° Notesn ReferenceTok2018e
Equinox2000 Last observation2018 Grade3(1=Definitive, 9=Indet.)
label theta rho
2000 13.3 0.119
2001 16.6 0.114
2002 20.3 0.108
2003 24.4 0.102
2004 29.0 0.095
2005 34.5 0.087
2006 41.1 0.079
2007 49.2 0.071
2008 59.3 0.063
2009 71.9 0.057
2010 87.0 0.053
2011 103.7 0.052
2012 120.0 0.054
2013 134.2 0.059
2014 145.9 0.066
2015 155.3 0.073
2016 162.9 0.081
2017 169.2 0.088
2018 174.5 0.095
2019 179.2 0.101
2020 183.4 0.106
2021 187.2 0.111
2022 190.8 0.114
2023 194.2 0.117
2024 197.4 0.119
2025 200.6 0.120
2026 203.7 0.120
2027 206.9 0.120
2028 210.0 0.119
2029 213.2 0.118
2030 216.5 0.117


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


 
  


wds18181-0120a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 18181-0120 HDS 2587 AB (HD 168073) : 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
18181-0120 HDS2587 AB 2019 7 181 0.1 7.78 9.34 A0 O 181805.51-011948.5

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

 
 
WDS 18181-0120 HDS 2587 AB (HD 168073) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 18181-0120 HDS 2587 AB (HD 168073) : MEASURES
 
 
No records found.

 
 
WDS 18181-0120 (HD 168073) : VIRTUAL EYEPIECE
 
 

18181-0120 HDS2587A mag 7.78 Sp A0 18181-0120 HDS2587B sep 0.1 P.A. 181.40 mag 9.34 18181-0120 GII 265C sep 1.8 P.A. 167.40 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 18181-0120 (HD 168073) : ALADIN DSS IMAGE @ 18h 18m 05.51s -01° 19' 48.5"
 
 
 
 
WDS 18181-0120 HDS 2587 AB (HD 168073) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

18181-0120 HDS2587AB distance=0' 18185-0105 TDT 786 distance=16' 18210-0101 WOR 35 distance=47' 18222-0119 BAL 580 distance=62' 18155-0220 LDS6324 distance=74' 18163+0000 J 2512 distance=86' 18148-0231 A 84 distance=87' 18119-0104 RST5107 distance=95' 18250-0135 AC 11 distance=104' 18146+0011 STF2294 distance=105' 18213-0254 STFB 8 distance=106' 18140+0009 BAL1193 distance=108' 18252-0143 LSC 156 distance=109' 18175-0323 HTP 45AB distance=124' 18175-0323 HTP 45AG distance=124' 18175-0323 HTP 45AH distance=124' 18175-0323 HTP 45AI distance=124' 18175-0323 HTP 45AK distance=124' 18175-0323 HTP 45AL distance=124' 18175-0323 HTP 45AN distance=124' 18175-0323 HTP 45AQ distance=124' 18175-0323 HTP 45AR distance=124' 18175-0323 HTP 45AS distance=124' 18175-0323 HTP 45AV distance=124' 18175-0323 HTP 45A,Wa distance=124' 18175-0323 HTP 45A,Wb distance=124' 18175-0323 HTP 45A,Wc distance=124' 18175-0323 HTP 45A,We distance=124' 18175-0323 HTP 45A,Wg distance=124' 18175-0323 HTP 45A,Wj distance=124' 18175-0323 HTP 45A,Wn distance=124' 18175-0323 HTP 45A,Wo distance=124' 18175-0323 HTP 45A,Wp distance=124' 18175-0323 HTP 45A,Wq distance=124' 18175-0323 HTP 45A,Xa distance=124' 18175-0323 HTP 45A,Xb distance=124' 18175-0323 HTP 45A,Xc distance=124' 18175-0323 HTP 45A,Xd distance=124' 18175-0323 HTP 45A,Xe distance=124' 18175-0323 HTP 45A,Xf distance=124' 18175-0323 HTP 45A,Xg distance=124' 18175-0323 HTP 45A,Xh distance=124' 18175-0323 HTP 45A,Xi distance=124' 18175-0323 HTP 45A,Xj distance=124' 18175-0323 HTP 45A,Xk distance=124' 18157-0321 STF2296 distance=127' 18110-0000 RST5106 distance=134' 18213-0047 RST5111 distance=136' 18166-0058 RST5109 distance=140' 18117-0023 TDT 732 distance=141' 18265-0226 GRV1262 distance=143' 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 18181-0120 HDS2587 AB 181 0.1
Show 18181-0120 GII 265 AC 167 1.8
Show 18185-0105 TDT 786 45 2.3 16
Show 18210-0101 WOR 35 2 1.4 47
Show 18222-0119 BAL 580 113 14.6 62
Show 18155-0220 LDS6324 10 34.6 74
Show 18163+0000 J 2512 204 3.9 86
Show 18148-0231 A 84 318 3.9 87
Show 18119-0104 RST5107 157 0.4 95
Show 18250-0135 AC 11 355 0.9 104
Show 18146+0011 STF2294 93 1.3 105
Show 18213-0254 STFB 8 54 251.4 106
Show 18140+0009 BAL1193 277 16.5 108
Show 18252-0143 LSC 156 23 0.2 109
Show 18175-0323 HTP 45 AB 6 16.6 124
Show 18175-0323 HTP 45 AG 89 17.7 124
Show 18175-0323 HTP 45 AH 175 14.8 124
Show 18175-0323 HTP 45 AI 80 12.6 124
Show 18175-0323 HTP 45 AK 190 12.6 124
Show 18175-0323 HTP 45 AL 305 19.1 124
Show 18175-0323 HTP 45 AN 354 12.2 124
Show 18175-0323 HTP 45 AQ 228 16.8 124
Show 18175-0323 HTP 45 AR 267 14.7 124
Show 18175-0323 HTP 45 AS 337 15.9 124
Show 18175-0323 HTP 45 AV 243 14.0 124
Show 18175-0323 HTP 45 A,Wa 252 5.4 124
Show 18175-0323 HTP 45 A,Wb 264 7.2 124
Show 18175-0323 HTP 45 A,Wc 305 17.0 124
Show 18175-0323 HTP 45 A,We 33 17.3 124
Show 18175-0323 HTP 45 A,Wg 284 15.8 124
Show 18175-0323 HTP 45 A,Wj 316 10.2 124
Show 18175-0323 HTP 45 A,Wn 216 12.7 124
Show 18175-0323 HTP 45 A,Wo 213 12.5 124
Show 18175-0323 HTP 45 A,Wp 270 18.2 124
Show 18175-0323 HTP 45 A,Wq 269 18.0 124
Show 18175-0323 HTP 45 A,Xa 221 13.3 124
Show 18175-0323 HTP 45 A,Xb 268 17.9 124
Show 18175-0323 HTP 45 A,Xc 44 21.4 124
Show 18175-0323 HTP 45 A,Xd 51 23.8 124
Show 18175-0323 HTP 45 A,Xe 249 24.3 124
Show 18175-0323 HTP 45 A,Xf 311 24.8 124
Show 18175-0323 HTP 45 A,Xg 41 25.5 124
Show 18175-0323 HTP 45 A,Xh 250 26.0 124
Show 18175-0323 HTP 45 A,Xi 330 27.7 124
Show 18175-0323 HTP 45 A,Xj 328 28.2 124
Show 18175-0323 HTP 45 A,Xk 35 29.8 124
Show 18157-0321 STF2296 6 3.2 127
Show 18110-0000 RST5106 4 1.9 134
Show 18213-0047 RST5111 84 1.4 136
Show 18166-0058 RST5109 114 2.1 140
Show 18117-0023 TDT 732 47 0.4 141

 
 
WDS 18181-0120 : COMPONENTS
 
 
  A B
B pa=181.4°
sep=0.10"
 
C pa=167.4°
sep=1.83"
pa=166.6°
sep=1.73"
 
 
18181-0120 A
 
 
Name HD 168073 Coord arcsec 2000 181805.51-011948.5 Mag 7.78 Spectral class A0 (white)
PmRA 2.00 PmDE 2.0 SAO 142206 HIP 89680
Tycho2 5098-00553-1 HD 168073 BD BD-01 3469
Tycho2
Tycho2 5098-00553-1 Pflag RAmdeg 274.52296987 DEmdeg -1.33014796
PmRA 3.3 PmDE 1.6 E RAmdeg 4 E DEmdeg 5
E pmRA 1.2 E pmDE 1.2 EpRAm 1991.51 EpDEm 1991.30
Num 11 Q RAmdeg 0.8 Q DEmdeg 1.0 Q pmRA 0.8
Q pmDE 0.9 BTmag 7.856 E BTmag 0.015 VTmag 7.501
E VTmag 0.011 Prox 999 TYC T HIP 89680
CCDM AB RAdeg 274.52296222 DEdeg -1.33015194 EpRA 1990 1.81
EpDE 1990 1.75 E RAdeg 4.2 E DEdeg 5.2 Posflg P
Corr 0.1
SAO
SAO 142206 DelFlag RA1950 PmRA1950 -0.0004
DE1950 PmDE1950 -0.003 Vmag 7.6 SpType A0
Double code Source 31 CatNum 4538 DM BD-01 3469
DMcomp BDsup HD 168073 M HD 0
GC RA1950rad 4.78003149 DE1950rad -0.02357213 PmRA2000 -0.0002
PmDE2000 -0.003
Hipparcos
Catalog H HIP 89680 Proxy H RAhms 18 18 05.51
DEdms -01 19 48.5 Vmag 7.47 VarFlag R Vmag G
RAdeg 274.523 DEdeg -1.33015 AstroRef * Plx 4.72
CCDM 18181-0120 N CCDM H Nsys 1 Ncomp 2
MultFlag C Source S Qual A M HIP AB
Theta 350 Rho 0.133 HD 168073 BD BD-01 3469
CD CP Dm number -01 3469 VIred 0.46
SpType A0 R SpType Coord arcsec 2000 181805.51-011948.5
Hipparcos 2
HIP 89680 Sn 55 So 3 Nc 2
RArad 4.7913295172 DErad -0.023215534 Plx 4.39 PmRA 0.96
PmDE 1.95 E RArad 0.68 E DErad 0.5 E Plx 0.81
E pmRA 0.74 E pmDE 0.58 Hpmag 7.5459 E Hpmag 0.0011
SHp 0.009 VA 0 BV 0.399 E BV 0.015
VI 0.46
CCDM
Ccdm 18181-0120 RComp Comp A Note1
Note2 Discov num DRAs -0.49 DDEs 11.4
R dRAs 82 Year Theta Rho
Obs 2 Vmag 7.8 Sp A0 PmNote *
PmRA 2 PmDE 2 Dm number -01 3469 Cat1 BD
Name2 -01 2194 Cat2 AGK2/3 HD 168073 M HD
ADS BDS M ADS BDS N IDS IDS
HIC 89680
 
 
18181-0120 B
 
 
Coord arcsec 2000 181805.51-011948.6 Mag 9.34 Calc delta mag 1.56 Calc coord yes
CCDM
Ccdm 18181-0120 RComp Comp B Note1
Note2 Discov num HDS DRAs -0.49 DDEs 11.6
R dRAs 82 Year 1991 Theta 350 Rho 0.1
Obs 1 Vmag 9.3 Sp PmNote *
PmRA 2 PmDE 2 Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS M ADS BDS N IDS IDS
HIC 89680
 
 
18181-0120 C
 
 
Coord arcsec 2000 181805.54-011950.3 Calc delta mag 7.78 Calc coord yes