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Current system
18043+4206
COU 1786 Aa,Ab


Nearby doubles
19' : 18026+4204
UC 3480

20' : 18058+4215
KPP2613

24' : 18063+4213
ROE 18

28' : 18031+4158
DOO 10

28' : 18019+4202
DAM 103

29' : 18050+4233
UC 3488

44' : 18007+4145
ES 1558

57' : 18055+4301
TDS 903

59' : 18029+4109
ES 1648

62' : 18054+4306
COU1787

69' : 17587+4231
POP 123

72' : 18109+4242
ROE 5AB

73' : 18108+4212
TDT 724

74' : 18058+4054
TDT 677

76' : 17592+4115
COU1783

80' : 18018+4052
BVD 259

86' : 17596+4314
COU1784

87' : 17572+4131
COU1782

87' : 18092+4314
ES 1417AB

91' : 17590+4058
BRT 345

93' : 18094+4319
ES 1418

95' : 18035+4032
COU1785

97' : 17572+4112
KPP4072

98' : 17569+4115
STF2255

98' : 17571+4303
CBL 520

103' : 18126+4123
STF2298AB



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Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

18043+4206 COU 1786 Aa,Ab

 
 
18h 04m 16.91s +42° 05' 45.0" P.A. 11.00 sep 0.2 mag 8.33,9.11 Sp F0 dist. 141.04 pc (460.07 l.y.)
 
 
Coord 2000 18043+4206 Discov num COU1786 Comp Aa,Ab Coord arcsec 2000 18 04 16.91 +42 05 45.0
Date first 1979 Date last 2016 Obs 35
Pa first 75 Pa last 11.4 P.A. Now (θ) 17.7°
Sep first 0.1 Sep last 0.152 Sep. Now (ρ) 0.187"
Mag pri 8.33 Mag sec 9.11 delta mag (ΔM) 0.78 Spectral class F0 (yellow-white)
Pri motion ra +009 Sec motion ra
Pri motion dec +029 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
18043+4206 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 47188 18 04 17 +42 05 45 COU 1786 Aa,Ab 2016 35 11 0.2 8.33 9.11 0.78 Y <===
Show HD 165503 47188 18 04 17 +42 05 45 ROE 1 AB 2015 14 186 24.3 8.33 12.40 4.07
Triple system
2 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Hercules SAO 47188 HIP 88498 Tycho2 3110-01491-1
Gaia DR2 2113742900320323968 HD 165503 BD BD+42 2995 Distance 141.04
Distance ly 460.07
 
 
ORBITAL ELEMENTS
 
 
Period (P)56.97y± 9.62 Periastron (T)2045.61y± 10.85 Semi-major axis (a)0.148a± 0.015
Eccentricity (e)0.304± 0.068 Inclination (i)42.3°± 2.9 Longitude of periastron (ω)332.8°± 6.8
Node (Ω)202.1°± 9 Notesn ReferenceHrt2009
Equinox Last observation2007 Grade3(1=Definitive, 9=Indet.)
label theta rho
2000 278.3 0.110
2001 286.2 0.113
2002 293.6 0.116
2003 300.6 0.120
2004 307.2 0.124
2005 313.2 0.129
2006 318.8 0.134
2007 324.0 0.140
2008 328.8 0.145
2009 333.3 0.151
2010 337.5 0.156
2011 341.4 0.161
2012 345.0 0.166
2013 348.5 0.170
2014 351.8 0.174
2015 354.9 0.178
2016 358.0 0.181
2017 0.9 0.183
2018 3.8 0.185
2019 6.6 0.187
2020 9.4 0.188
2021 12.1 0.188
2022 14.9 0.188
2023 17.7 0.187
2024 20.5 0.185
2025 23.3 0.183
2026 26.3 0.180
2027 29.4 0.176
2028 32.6 0.172
2029 36.0 0.167
2030 39.6 0.161


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


 
  


wds18043%2B4206c.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 18043+4206 COU 1786 Aa,Ab : NOTES
 
 
discov_num notes refcode
COU1786 Malkov et al. (2012) derive dynamical, photometric, and spectroscopic
masses of 2.80 +/- 1.44, 3.07, and 1.45 Msun, respectively. Mlk2012
 
 
REFERENCES
 
 
refcode metd author reference
Hrt2009 Su j Hartkopf, W.I. & Mason, B.D. 2009AJ....138..813H
Hrt2009 +orb AJ 138, 813, 2009
Mlk2012 not - Malkov, O.Yu., Tamazian, V.S., Docobo, J.A., & Chulkov, D.A. 2012A&A...546A..69M
Mlk2012 A&A 546, A69, 2012
 
 
DISCOVERER
 
 
idgroup discov author
1 COU Couteau, P.
240 ROE Roe, E.D.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18043+4206 COU1786 Aa,Ab 2009 33 338 0.1 8.33 9.11 F0 NO 180416.91+420545.0
18043+4206 COU1786 Aa,Ab 2016 34 11 0.2 8.33 9.11 F0 NO 180416.91+420545.0

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

 
 
WDS 18043+4206 COU 1786 Aa,Ab : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 18043+4206 COU 1786 Aa,Ab : MEASURES
 
 
No records found.

 
 
WDS 18043+4206 : VIRTUAL EYEPIECE
 
 

18043+4206 ROE 1A mag 8.33 Sp A8III 18043+4206 COU1786Ab sep 0.1 P.A. 8.50 mag 9.11 18043+4206 ROE 1B sep 24.2 P.A. 184.50 mag 12.4 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 18043+4206 : ALADIN DSS IMAGE @ 18h 04m 16.91s +42° 05' 45.0"
 
 
 
 
WDS 18043+4206 COU 1786 Aa,Ab : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

18043+4206 COU1786Aa,Ab distance=0' 18026+4204 UC 3480 distance=19' 18058+4215 KPP2613 distance=20' 18063+4213 ROE 18 distance=24' 18031+4158 DOO 10 distance=28' 18019+4202 DAM 103 distance=28' 18050+4233 UC 3488 distance=29' 18007+4145 ES 1558 distance=44' 18055+4301 TDS 903 distance=57' 18029+4109 ES 1648 distance=59' 18054+4306 COU1787 distance=62' 17587+4231 POP 123 distance=69' 18109+4242 ROE 5AB distance=72' 18109+4242 ROE 5AC distance=72' 18108+4212 TDT 724 distance=73' 18058+4054 TDT 677 distance=74' 18109+4242 ROE 6CD distance=75' 17592+4115 COU1783 distance=76' 18018+4052 BVD 259 distance=80' 17596+4314 COU1784 distance=86' 17572+4131 COU1782 distance=87' 18092+4314 ES 1417BC distance=87' 18092+4314 ES 1417AB distance=87' 17590+4058 BRT 345 distance=91' 18094+4319 ES 1418 distance=93' 18035+4032 COU1785 distance=95' 17572+4112 KPP4072 distance=97' 17569+4115 STF2255 distance=98' 17571+4303 CBL 520 distance=98' 18126+4123 STF2298AB distance=103' 18126+4123 STF2298AC distance=103' 18126+4123 WAL 89AB,D distance=103' 18131+4129 TOK 319 distance=106' 18097+4334 CVR 868 distance=107' 18130+4251 ES 473AB distance=107' 18130+4251 SLV 6AC distance=107' 18065+4022 STF2282AB distance=108' 18065+4022 STF2282AC distance=108' 18065+4022 STF2282BC distance=108' 18130+4251 ES 473BC distance=108' 18015+4019 HO 77 distance=111' 17555+4108 COU1601Aa,Ab distance=115' 17555+4108 ES 1557AB distance=115' 17555+4108 ES 1557AC distance=115' 17555+4108 ES 1557AD distance=115' 17555+4108 ABH 92AE distance=115' 18058+4400 LDS4775 distance=116' 18017+4011 STF2267 distance=119' 17550+4107 UC 3444 distance=120' 18132+4315 A 576 distance=121' 17548+4110 RAO 605 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 18043+4206 COU1786 Aa,Ab 11 0.2
Show 18043+4206 ROE 1 AB 186 24.3
Show 18026+4204 UC 3480 18 23.8 19
Show 18058+4215 KPP2613 113 24.0 20
Show 18063+4213 ROE 18 171 14.9 24
Show 18031+4158 DOO 10 292 4.9 28
Show 18019+4202 DAM 103 206 11.0 28
Show 18050+4233 UC 3488 313 4.2 29
Show 18007+4145 ES 1558 298 6.3 44
Show 18055+4301 TDS 903 173 1.1 57
Show 18029+4109 ES 1648 9 3.7 59
Show 18054+4306 COU1787 325 0.4 62
Show 17587+4231 POP 123 232 3.4 69
Show 18109+4242 ROE 5 AB 115 14.9 72
Show 18109+4242 ROE 5 AC 32 193.5 72
Show 18108+4212 TDT 724 56 0.5 73
Show 18058+4054 TDT 677 231 0.5 74
Show 18109+4242 ROE 6 CD 228 11.1 75
Show 17592+4115 COU1783 47 2.8 76
Show 18018+4052 BVD 259 277 10.6 80
Show 17596+4314 COU1784 97 2.2 86
Show 17572+4131 COU1782 190 0.4 87
Show 18092+4314 ES 1417 BC 277 4.2 87
Show 18092+4314 ES 1417 AB 206 13.9 87
Show 17590+4058 BRT 345 138 2.8 91
Show 18094+4319 ES 1418 303 4.3 93
Show 18035+4032 COU1785 30 0.2 95
Show 17572+4112 KPP4072 266 1.5 97
Show 17569+4115 STF2255 343 9.1 98
Show 17571+4303 CBL 520 111 35.8 98
Show 18126+4123 STF2298 AB 172 1.9 103
Show 18126+4123 STF2298 AC 40 72.9 103
Show 18126+4123 WAL 89 AB,D 71 46.6 103
Show 18131+4129 TOK 319 301 94.2 106
Show 18097+4334 CVR 868 207 28.7 107
Show 18130+4251 ES 473 AB 98 30.7 107
Show 18130+4251 SLV 6 AC 129 42.8 107
Show 18065+4022 STF2282 AB 83 2.7 108
Show 18065+4022 STF2282 AC 80 2.7 108
Show 18065+4022 STF2282 BC 48 0.2 108
Show 18130+4251 ES 473 BC 173 22.5 108
Show 18015+4019 HO 77 312 2.0 111
Show 17555+4108 COU1601 Aa,Ab 63 0.5 115
Show 17555+4108 ES 1557 AB 11 11.5 115
Show 17555+4108 ES 1557 AC 216 27.0 115
Show 17555+4108 ES 1557 AD 312 40.1 115
Show 17555+4108 ABH 92 AE 324 71.1 115
Show 18058+4400 LDS4775 53 15.7 116
Show 18017+4011 STF2267 280 0.4 119
Show 17550+4107 UC 3444 130 12.0 120
Show 18132+4315 A 576 282 0.4 121

 
 
WDS 18043+4206 : COMPONENTS
 
 
  A Ab
Ab pa=8.5°
sep=0.15"
 
B pa=184.5°
sep=24.20"
pa=184.5°
sep=24.35"
 
 
18043+4206 A
 
 
Name HD 165503 Coord arcsec 2000 180416.91+420545.0 Mag 8.33 Spectral class A8III (white)
PmRA 9.00 PmDE 29.0 SAO 47188 HIP 88498
Tycho2 3110-01491-1 HD 165503 BD BD+42 2995
Tycho2
Tycho2 3110-01491-1 Pflag RAmdeg 271.07043886 DEmdeg 42.09586570
PmRA -2.0 PmDE 15.7 E RAmdeg 5 E DEmdeg 5
E pmRA 1.1 E pmDE 1.2 EpRAm 1991.25 EpDEm 1991.28
Num 9 Q RAmdeg 0.8 Q DEmdeg 1.4 Q pmRA 0.9
Q pmDE 1.3 BTmag 8.139 E BTmag 0.016 VTmag 7.863
E VTmag 0.011 Prox 999 TYC T HIP 88498
CCDM AS RAdeg 271.07044528 DEdeg 42.09582944 EpRA 1990 1.62
EpDE 1990 1.62 E RAdeg 4.9 E DEdeg 4.9 Posflg P
Corr -0.1
SAO
SAO 47188 DelFlag RA1950 PmRA1950 -0.0006
DE1950 PmDE1950 0.01 Vmag 7.5 SpType F0
Double code Source 4 CatNum 1554 DM BD+42 2995
DMcomp BDsup HD 165503 M HD 0
GC RA1950rad 4.72427507 DE1950rad 0.73463139 PmRA2000 -0.0002
PmDE2000 0.01
Hipparcos
Catalog H HIP 88498 Proxy H RAhms 18 04 16.91
DEdms +42 05 45.0 Vmag 7.84 VarFlag R Vmag G
RAdeg 271.07 DEdeg 42.0958 AstroRef * Plx 6.59
CCDM 18043+4206 N CCDM M Nsys 1 Ncomp 2
MultFlag C Source S Qual B M HIP AS
Theta 7 Rho 0.11 HD 165503 BD BD+42 2995
CD CP Dm number +42 2995 VIred 0.34
SpType F0 R SpType Coord arcsec 2000 180416.91+420545.0
Hipparcos 2
HIP 88498 Sn 55 So 3 Nc 2
RArad 4.7310717659 DErad 0.7347107858 Plx 7.09 PmRA -0.69
PmDE 16.57 E RArad 0.46 E DErad 0.49 E Plx 0.56
E pmRA 0.51 E pmDE 0.6 Hpmag 7.9019 E Hpmag 0.0013
SHp 0.012 VA 0 BV 0.296 E BV 0.006
VI 0.34
CCDM
Ccdm 18043+4206 RComp Comp A Note1
Note2 Discov num DRAs -1.09 DDEs -14.2
R dRAs 10 Year Theta Rho
Obs 2 Vmag 8.2 Sp F0 PmNote *
PmRA 14 PmDE 30 Dm number +42 2995 Cat1 BD
Name2 +42 1554 Cat2 AGK2/3 HD 165503 M HD
ADS BDS M ADS BDS N IDS IDS 18012N4205A
HIC 88498
 
 
18043+4206 Ab
 
 
Coord arcsec 2000 180416.91+420545.1 Mag 9.11 Calc delta mag 0.78 Calc coord yes
 
 
18043+4206 B
 
 
Coord arcsec 2000 180416.74+420520.9 Mag 12.4 Calc delta mag 4.07 Calc coord yes
CCDM
Ccdm 18043+4206 RComp Comp B Note1 *
Note2 Discov num COU1786 DRAs DDEs
R dRAs Year 1979 Theta 72 Rho 0.1
Obs 4 Vmag 8.2 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS M ADS BDS N IDS IDS 18012N4205B
HIC 88498