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Doubles in session


Current system
18250-0135
AC 11
HD 169493


Nearby doubles
9' : 18252-0143
LSC 156

45' : 18222-0119
BAL 580

57' : 18265-0226
GRV1262

60' : 18289-0138
LDS5865

68' : 18210-0101
WOR 35

73' : 18296-0151
CON 32AB

76' : 18299-0149
HLA 18AB

82' : 18264-0254
A 85

91' : 18305-0211
CON 34

97' : 18213-0254
STFB 8

97' : 18293-0246
HJ 859

98' : 18314-0128
KPP4111

101' : 18185-0105
TDT 786

104' : 18181-0120
HDS2587AB

108' : 18269+0009
BAL1195

110' : 18283-0003
CHN 27

112' : 18272+0012
STF2316AB

114' : 18325-0120
RST5117

119' : 18288+0009
LI 1

121' : 18241-0335
TOK 616

125' : 18287+0016
SHC 2

128' : 18290+0017
SHC 7

128' : 18289+0019
SHC 6

129' : 18335-0144
RST5118

130' : 18289+0020
SHC 3

135' : 18269-0036
BAL 894



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.

18250-0135 AC 11 (HD 169493)

 
 
18h 24m 57.21s -01° 34' 45.6" P.A. 355.00 sep 0.9 mag 6.71,7.21 Sp F0 dist. 133.51 pc (435.51 l.y.)
 
 
Coord 2000 18250-0135 Discov num AC   11 Comp Coord arcsec 2000 18 24 57.21 -01 34 45.6
Date first 1854 Date last 2021 Obs 253
Pa first 178 Pa last 354.5 P.A. Now (θ) 354.5°
Sep first 0.4 Sep last 0.909 Sep. Now (ρ) 0.909"
Mag pri 6.71 Mag sec 7.21 delta mag (ΔM) 0.5 Spectral class F0 (yellow-white)
Pri motion ra +005 Sec motion ra +005
Pri motion dec -006 Sec motion dec -006
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 169493 Constellation Serpens SAO 142294 HIP 90253
Tycho2 5099-00358-1 Gaia DR2 4271248601112859136 HD 169493 HR 6898
GC 25131 ADS 11324 BD BD-01 3486 Distance 133.51
Distance ly 435.51
 
 
ORBITAL ELEMENTS
 
 
Period (P)440.6y± 121.4 Periastron (T)1888.7y± 7.8 Semi-major axis (a)0.77a± 0.16
Eccentricity (e)0.47± 0.1 Inclination (i)93.3°± 0.6 Longitude of periastron (ω)55.8°± 24.8
Node (Ω)176.3°± 0.4 Notesn ReferenceTok2021f
Equinox Last observation2021 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 355.5 0.897
2001 355.4 0.898
2002 355.4 0.900
2003 355.4 0.902
2004 355.3 0.903
2005 355.3 0.904
2006 355.3 0.906
2007 355.3 0.907
2008 355.2 0.908
2009 355.2 0.909
2010 355.2 0.910
2011 355.1 0.910
2012 355.1 0.911
2013 355.1 0.912
2014 355.0 0.912
2015 355.0 0.912
2016 355.0 0.913
2017 355.0 0.913
2018 354.9 0.913
2019 354.9 0.913
2020 354.9 0.913
2021 354.8 0.913
2022 354.8 0.913
2023 354.8 0.912
2024 354.8 0.912
2025 354.7 0.912
2026 354.7 0.911
2027 354.7 0.910
2028 354.6 0.910
2029 354.6 0.909
2030 354.6 0.908


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


 
  


wds18250-0135b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 18250-0135 AC 11 (HD 169493) : NOTES
 
 
discov_num notes refcode
AC 11 Spectrum composite; A9III+F6III. Egg1947
Additional notes may be found in Eggen (1947) and Voute (1951). Vou1951
Malkov et al. (2012) derive dynamical, photometric, and spectroscopic
masses of 9.58 +/- 9.12, 4.69, and 1.45 Msun, respectively. Mlk2012
 
 
REFERENCES
 
 
refcode metd author reference
Egg1947 Ma - Eggen, O.J. 1947AJ.....53...21E
Egg1947 AJ 53, 21, 1947
Mlk2012 not - Malkov, O.Yu., Tamazian, V.S., Docobo, J.A., & Chulkov, D.A. 2012A&A...546A..69M
Mlk2012 A&A 546, A69, 2012
Tok2021f orb - Tokovinin, A. 2021IAUDS.204....1T
Tok2021f Inf. Circ. 204, 1, 2021
Vou1951 Ma - Voute, J.G. 1951RA......2..319V
Vou1951 Vatican Obs. Richerche Astron. 2, 319, 1951
 
 
DISCOVERER
 
 
idgroup discov author
1 AC Clark, Alvan
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18250-0135 AC 11 2004 246 355 0.9 6.71 7.21 F0 NOD 182457.21-013445.6
18250-0135 AC 11 2009 249 355 0.9 6.71 7.21 F0 NOD 182457.21-013445.6
18250-0135 AC 11 2010 254 354 0.9 6.71 7.21 F0 NOD 182457.21-013445.6
18250-0135 AC 11 2013 258 355 0.9 6.71 7.21 F0 NOD 182457.21-013445.6
18250-0135 AC 11 2014 227 354 0.9 6.71 7.21 F0 NOD 182457.21-013445.6
18250-0135 AC 11 2017 231 354 0.8 6.71 7.21 F0 NO 182457.21-013445.6
18250-0135 AC 11 2018 232 356 0.9 6.71 7.21 F0 NO 182457.21-013445.6
18250-0135 AC 11 2019 245 355 0.9 6.71 7.21 F0 NO 182457.21-013445.6
18250-0135 AC 11 2020 248 355 0.9 6.71 7.21 F0 NO 182457.21-013445.6
18250-0135 AC 11 2021 253 355 0.9 6.71 7.21 F0 NO 182457.21-013445.6

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

 
 
WDS 18250-0135 AC 11 (HD 169493) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 18250-0135 AC 11 (HD 169493) : MEASURES
 
 
No records found.

 
 
WDS 18250-0135 (HD 169493) : VIRTUAL EYEPIECE
 
 

18250-0135 AC 11A mag 6.71 Sp F0 18250-0135 AC 11B sep 0.9 P.A. 354.50 mag 7.21 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 18250-0135 (HD 169493) : ALADIN DSS IMAGE @ 18h 24m 57.21s -01° 34' 45.6"
 
 
 
 
WDS 18250-0135 AC 11 (HD 169493) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

18250-0135 AC 11 distance=0' 18252-0143 LSC 156 distance=9' 18222-0119 BAL 580 distance=45' 18265-0226 GRV1262 distance=57' 18289-0138 LDS5865 distance=60' 18210-0101 WOR 35 distance=68' 18296-0151 CON 32AB distance=73' 18296-0151 CON 32CD distance=73' 18296-0151 CON 32EF distance=73' 18299-0149 HLA 18AB distance=76' 18299-0149 HLA 18AC distance=76' 18264-0254 A 85 distance=82' 18305-0211 CON 34 distance=91' 18213-0254 STFB 8 distance=97' 18293-0246 HJ 859 distance=97' 18314-0128 KPP4111 distance=98' 18185-0105 TDT 786 distance=101' 18181-0120 HDS2587AB distance=104' 18181-0120 GII 265AC distance=104' 18269+0009 BAL1195 distance=108' 18283-0003 CHN 27 distance=110' 18272+0012 STF2316Aa,Ab distance=112' 18272+0012 STF2316AB distance=112' 18325-0120 RST5117 distance=114' 18288+0009 LI 1 distance=119' 18241-0335 TOK 616 distance=121' 18287+0016 SHC 2 distance=125' 18290+0017 SHC 7 distance=128' 18289+0019 SHC 6 distance=128' 18335-0144 RST5118 distance=129' 18289+0020 SHC 3 distance=130' 18269-0036 BAL 894 distance=135' 18335-0220 GWP2784AB distance=137' 18335-0220 GWP2785AC distance=137' 18289+0029 SHC 4 distance=137' 18291-0338 FOX 230 distance=138' 18289+0030 SHC 5 distance=138' 18261+0047 BU 1203 distance=143' 18296+0034 SHC 8 distance=147' 18284-0353 CRI 19 distance=148' 18296+0035 SKF2129 distance=148' 18155-0220 LDS6324 distance=150' 18299+0036 CON 33 distance=151' 18243-0405 YSC 67AB distance=151' 18243-0405 TOK 420Aa,Ab distance=151' 18213-0047 RST5111 distance=153' 18246-0058 TDT 844 distance=153' 18175-0323 HTP 45AB distance=156' 18175-0323 HTP 45AG distance=156' 18175-0323 HTP 45AH distance=156' 18175-0323 HTP 45AI distance=156' 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 18250-0135 AC 11 355 0.9
Show 18252-0143 LSC 156 23 0.2 9
Show 18222-0119 BAL 580 113 14.6 45
Show 18265-0226 GRV1262 210 1.6 57
Show 18289-0138 LDS5865 8 16.9 60
Show 18210-0101 WOR 35 2 1.4 68
Show 18296-0151 CON 32 AB 64 5.7 73
Show 18296-0151 CON 32 CD 71 1.5 73
Show 18296-0151 CON 32 EF 314 1.9 73
Show 18299-0149 HLA 18 AB 164 3.7 76
Show 18299-0149 HLA 18 AC 147 4.0 76
Show 18264-0254 A 85 190 4.2 82
Show 18305-0211 CON 34 328 4.5 91
Show 18213-0254 STFB 8 54 251.4 97
Show 18293-0246 HJ 859 217 16.9 97
Show 18314-0128 KPP4111 189 1.6 98
Show 18185-0105 TDT 786 45 2.3 101
Show 18181-0120 HDS2587 AB 181 0.1 104
Show 18181-0120 GII 265 AC 167 1.8 104
Show 18269+0009 BAL1195 296 8.8 108
Show 18283-0003 CHN 27 138 2.9 110
Show 18272+0012 STF2316 Aa,Ab 298 0.2 112
Show 18272+0012 STF2316 AB 322 3.9 112
Show 18325-0120 RST5117 252 1.9 114
Show 18288+0009 LI 1 249 7.5 119
Show 18241-0335 TOK 616 288 279.1 121
Show 18287+0016 SHC 2 88 5.7 125
Show 18290+0017 SHC 7 274 6.5 128
Show 18289+0019 SHC 6 242 5.3 128
Show 18335-0144 RST5118 206 2.9 129
Show 18289+0020 SHC 3 28 12.6 130
Show 18269-0036 BAL 894 269 5.7 135
Show 18335-0220 GWP2784 AB 292 455.1 137
Show 18335-0220 GWP2785 AC 337 279.6 137
Show 18289+0029 SHC 4 243 5.5 137
Show 18291-0338 FOX 230 94 5.1 138
Show 18289+0030 SHC 5 211 7.0 138
Show 18261+0047 BU 1203 157 0.5 143
Show 18296+0034 SHC 8 123 7.1 147
Show 18284-0353 CRI 19 235 8.3 148
Show 18296+0035 SKF2129 119 0.9 148
Show 18155-0220 LDS6324 10 34.6 150
Show 18299+0036 CON 33 303 9.5 151
Show 18243-0405 YSC 67 AB 356 0.4 151
Show 18243-0405 TOK 420 Aa,Ab 91 0.0 151
Show 18213-0047 RST5111 84 1.4 153
Show 18246-0058 TDT 844 67 0.5 153
Show 18175-0323 HTP 45 AB 6 16.6 156
Show 18175-0323 HTP 45 AG 89 17.7 156
Show 18175-0323 HTP 45 AH 175 14.8 156
Show 18175-0323 HTP 45 AI 80 12.6 156

 
 
WDS 18250-0135 : COMPONENTS
 
 
  A
B pa=354.5°
sep=0.91"
 
 
18250-0135 A
 
 
Componente originario normalizzato AB Name HD 169493 Coord arcsec 2000 182457.21-013445.6 Mag 6.71
Spectral class F0 (yellow-white) PmRA 5.00 PmDE -6.0 SAO 142294
HIP 90253 Tycho2 5099-00358-1 HD 169493 HR 6898
GC 25131 BD BD-01 3486
Tycho2
Tycho2 5099-00358-1 Pflag P RAmdeg 276.23836034 DEmdeg -1.57932347
PmRA 5.2 PmDE -5.7 E RAmdeg 5 E DEmdeg 5
E pmRA 1.1 E pmDE 1.1 EpRAm 1991.48 EpDEm 1991.38
Num 8 Q RAmdeg 1.6 Q DEmdeg 1.6 Q pmRA 1.5
Q pmDE 1.5 BTmag 7.175 E BTmag 0.016 VTmag 6.712
E VTmag 0.010 Prox 9 TYC T HIP 90253
CCDM A RAdeg 276.23835500 DEdeg -1.57939417 EpRA 1990 1.75
EpDE 1990 1.66 E RAdeg 4.5 E DEdeg 4.6 Posflg D
Corr -0.1
SAO
SAO 142294 DelFlag RA1950 PmRA1950 -0.0013
DE1950 PmDE1950 -0.01 Vmag 6.1 SpType F5
Double code Source 70 CatNum 25131 DM BD-01 3486
DMcomp BDsup HD 169493 M HD 0
GC 25131 RA1950rad 4.80994284 DE1950rad -0.02806681 PmRA2000 -0.0011
PmDE2000 -0.01
Hipparcos
Catalog H HIP 90253 Proxy H RAhms 18 24 57.21
DEdms -01 34 45.9 Vmag 6.15 VarFlag R Vmag G
RAdeg 276.238 DEdeg -1.5794 AstroRef A Plx 7.54
CCDM 18250-0135 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 356 Rho 0.876 HD 169493 BD BD-01 3486
CD CP Dm number -01 3486 VIred 0.45
SpType F1V R SpType Coord arcsec 2000 182457.21-013445.9
Hipparcos 2
HIP 90253 Sn 15 So 3 Nc 2
RArad 4.8212688084 DErad -0.027565785 Plx 7.49 PmRA 5.6
PmDE -3.31 E RArad 1.75 E DErad 1.17 E Plx 1.96
E pmRA 1.94 E pmDE 1.44 Hpmag 6.2452 E Hpmag 0.0011
SHp 0.006 VA 0 BV 0.381 E BV 0.011
VI 0.45
CCDM
Ccdm 18250-0135 RComp Comp A Note1
Note2 Discov num DRAs -2.77 DDEs 13.2
R dRAs 10 Year Theta Rho
Obs 2 Vmag 6.8 Sp F5 PmNote *
PmRA 11 PmDE -25 Dm number -01 3486 Cat1 BD
Name2 -01 2208 Cat2 AGK2/3 HD 169493 M HD
ADS BDS A11324 M ADS BDS N IDS IDS 18198S0138A
HIC 90253
 
 
18250-0135 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 182457.20-013444.7 Mag 7.21 PmRA 5.00
PmDE -6.0 Tycho2 5099-00358-2 Calc delta mag 0.5 Calc coord yes
Tycho2
Tycho2 5099-00358-2 Pflag P RAmdeg 276.23836034 DEmdeg -1.57932347
PmRA 5.2 PmDE -5.7 E RAmdeg 5 E DEmdeg 5
E pmRA 1.1 E pmDE 1.1 EpRAm 1991.48 EpDEm 1991.38
Num 8 Q RAmdeg 1.6 Q DEmdeg 1.6 Q pmRA 1.5
Q pmDE 1.5 BTmag 7.574 E BTmag 0.016 VTmag 7.212
E VTmag 0.011 Prox 9 TYC T HIP 90253
CCDM B RAdeg 276.23833639 DEdeg -1.57915444 EpRA 1990 1.74
EpDE 1990 1.62 E RAdeg 5.1 E DEdeg 5.3 Posflg D
Corr -0.1
CCDM
Ccdm 18250-0135 RComp Comp B Note1 *
Note2 Discov num AC 11 DRAs DDEs
R dRAs Year 1854 Theta Rho
Obs 99 Vmag 7.0 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A11324 M ADS BDS N IDS IDS 18198S0138B
HIC 90253