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Doubles in session


Current system
18017+4011
STF 2267
HD 164941


Nearby doubles
10' : 18015+4019
HO 77

30' : 18035+4032
COU1785

41' : 18018+4052
BVD 259

48' : 18032+3926
MLB 851

51' : 18040+3923
L 19

53' : 17592+3926
COU1458

54' : 18033+3921
STF2275

56' : 17590+4058
BRT 345

57' : 18065+4022
STF2282AB

57' : 17575+3942
COU1457

61' : 18029+4109
ES 1648

65' : 18058+4054
TDT 677

72' : 17592+4115
COU1783

72' : 18079+4002
ES 1649AB

78' : 18038+3857
LDS4773AB

78' : 17562+3926
BU 417

80' : 17572+4112
KPP4072

83' : 17554+3930
STF2246

85' : 17569+4115
STF2255

91' : 17555+4108
ES 1557AB

93' : 18097+4001
TDT 714

94' : 17538+3951
SLW1216

94' : 18077+3904
ES 2018

95' : 17550+4107
UC 3444

95' : 17540+3936
KPP 883

95' : 18007+4145
ES 1558



Selections
Full WDS
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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.

18017+4011 STF 2267 (HD 164941)

 
 
18h 01m 41.17s +40° 10' 41.9" P.A. 280.00 sep 0.4 mag 8.41,8.84 Sp A3 dist. 249.38 pc (813.48 l.y.)
 
 
Coord 2000 18017+4011 Discov num STF2267 Comp Coord arcsec 2000 18 01 41.17 +40 10 41.9
Date first 1830 Date last 2018 Obs 136
Pa first 234 Pa last 280.4 P.A. Now (θ) 280.4°
Sep first 1.4 Sep last 0.434 Sep. Now (ρ) 0.434"
Mag pri 8.41 Mag sec 8.84 delta mag (ΔM) 0.43 Spectral class A3 (white)
Pri motion ra -003 Sec motion ra -003
Pri motion dec +014 Sec motion dec +014
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 164941 Constellation Hercules SAO 47149 HIP 88284
Tycho2 3106-00396-1 Gaia DR2 4611347682380110080 HD 164941 GC 24560
ADS 11001 BD BD+40 3263 Distance 249.38 Distance ly 813.48
 
 
ORBITAL ELEMENTS
 
 
Period (P)1660y Periastron (T)2121y Semi-major axis (a)1.368a
Eccentricity (e)0.69 Inclination (i)55.5° Longitude of periastron (ω)351.9°
Node (Ω)37.3° Notes ReferenceZir2014a
Equinox2000 Last observation2011 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 266.9 0.607
2001 267.3 0.602
2002 267.8 0.597
2003 268.3 0.591
2004 268.7 0.586
2005 269.2 0.581
2006 269.7 0.575
2007 270.2 0.570
2008 270.8 0.565
2009 271.3 0.559
2010 271.8 0.554
2011 272.4 0.549
2012 272.9 0.544
2013 273.5 0.538
2014 274.1 0.533
2015 274.7 0.528
2016 275.3 0.523
2017 275.9 0.518
2018 276.5 0.513
2019 277.1 0.507
2020 277.8 0.502
2021 278.5 0.497
2022 279.1 0.492
2023 279.8 0.487
2024 280.5 0.483
2025 281.3 0.478
2026 282.0 0.473
2027 282.8 0.468
2028 283.5 0.463
2029 284.3 0.459
2030 285.1 0.454


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


 
  


wds18017%2B4011a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 18017+4011 STF 2267 (HD 164941) : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
Zir2014a orb - Zirm, H. 2014IAUDS.182....1Z
Zir2014a Inf. Circ. 182, 1, 2014
 
 
DISCOVERER
 
 
idgroup discov author
1 STF Struve, F.G.W.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18017+4011 STF2267 2005 124 269 0.5 8.41 8.84 A3 D 180141.17+401041.9
18017+4011 STF2267 2006 126 270 0.6 8.41 8.84 A3 D 180141.17+401041.9
18017+4011 STF2267 2010 129 272 0.6 8.41 8.84 A3 D 180141.17+401041.9
18017+4011 STF2267 2011 133 272 0.5 8.41 8.84 A3 O 180141.17+401041.9
18017+4011 STF2267 2016 133 276 0.5 8.41 8.84 A3 O 180141.17+401041.9
18017+4011 STF2267 2018 135 281 0.4 8.41 8.84 A3 O 180141.17+401041.9

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

 
 
WDS 18017+4011 STF 2267 (HD 164941) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 18017+4011 STF 2267 (HD 164941) : MEASURES
 
 
No records found.

 
 
WDS 18017+4011 (HD 164941) : VIRTUAL EYEPIECE
 
 

18017+4011 STF2267A mag 8.41 Sp A3 18017+4011 STF2267B sep 0.3 P.A. 283.50 mag 8.84 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 18017+4011 (HD 164941) : ALADIN DSS IMAGE @ 18h 01m 41.17s +40° 10' 41.9"
 
 
 
 
WDS 18017+4011 STF 2267 (HD 164941) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

18017+4011 STF2267 distance=0' 18015+4019 HO 77 distance=10' 18035+4032 COU1785 distance=30' 18018+4052 BVD 259 distance=41' 18032+3926 MLB 851 distance=48' 18040+3923 L 19 distance=51' 17592+3926 COU1458 distance=53' 18033+3921 STF2275 distance=54' 17590+4058 BRT 345 distance=56' 18065+4022 STF2282AB distance=57' 18065+4022 STF2282AC distance=57' 18065+4022 STF2282BC distance=57' 17575+3942 COU1457 distance=57' 18029+4109 ES 1648 distance=61' 18058+4054 TDT 677 distance=65' 17592+4115 COU1783 distance=72' 18079+4002 ES 1649AB distance=72' 18079+4002 ES 1649AC distance=72' 18038+3857 LDS4773AB distance=78' 17562+3926 BU 417 distance=78' 17572+4112 KPP4072 distance=80' 17554+3930 STF2246 distance=83' 17569+4115 STF2255 distance=85' 17555+4108 COU1601Aa,Ab distance=91' 17555+4108 ES 1557AB distance=91' 17555+4108 ES 1557AC distance=91' 17555+4108 ES 1557AD distance=91' 17555+4108 ABH 92AE distance=91' 18097+4001 TDT 714 distance=93' 17538+3951 SLW1216 distance=94' 18077+3904 ES 2018 distance=94' 17550+4107 UC 3444 distance=95' 17540+3936 KPP 883 distance=95' 18007+4145 ES 1558 distance=95' 17572+4131 COU1782 distance=97' 17533+4000 BU 130 distance=97' 17541+3928 HLM 9 distance=98' 17548+4110 RAO 605 distance=98' 18031+4158 DOO 10 distance=99' 17537+3924 TDT 560 distance=103' 17528+4038 TDT 552 distance=106' 18051+3819 J 1218 distance=109' 18064+3837 ES 2017 distance=109' 17525+3943 COU1302 distance=110' 18019+4202 DAM 103 distance=112' 18026+4204 UC 3480 distance=114' 18117+4020 UC 3526 distance=116' 17523+4057 A 699 distance=117' 18028+3815 ALI 867 distance=117' 18043+4206 COU1786Aa,Ab distance=119' 18043+4206 ROE 1AB distance=119' 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 18017+4011 STF2267 280 0.4
Show 18015+4019 HO 77 312 2.0 10
Show 18035+4032 COU1785 30 0.2 30
Show 18018+4052 BVD 259 277 10.6 41
Show 18032+3926 MLB 851 34 6.7 48
Show 18040+3923 L 19 274 0.2 51
Show 17592+3926 COU1458 78 0.4 53
Show 18033+3921 STF2275 124 0.3 54
Show 17590+4058 BRT 345 138 2.8 56
Show 18065+4022 STF2282 AB 83 2.7 57
Show 18065+4022 STF2282 AC 80 2.7 57
Show 18065+4022 STF2282 BC 48 0.2 57
Show 17575+3942 COU1457 7 1.9 57
Show 18029+4109 ES 1648 9 3.7 61
Show 18058+4054 TDT 677 231 0.5 65
Show 17592+4115 COU1783 47 2.8 72
Show 18079+4002 ES 1649 AB 331 7.8 72
Show 18079+4002 ES 1649 AC 226 24.4 72
Show 18038+3857 LDS4773 AB 304 72.4 78
Show 17562+3926 BU 417 317 1.0 78
Show 17572+4112 KPP4072 266 1.5 80
Show 17554+3930 STF2246 100 5.5 83
Show 17569+4115 STF2255 343 9.1 85
Show 17555+4108 COU1601 Aa,Ab 63 0.5 91
Show 17555+4108 ES 1557 AB 11 11.5 91
Show 17555+4108 ES 1557 AC 216 27.0 91
Show 17555+4108 ES 1557 AD 312 40.1 91
Show 17555+4108 ABH 92 AE 324 71.1 91
Show 18097+4001 TDT 714 312 0.8 93
Show 17538+3951 SLW1216 359 13.9 94
Show 18077+3904 ES 2018 236 5.7 94
Show 17550+4107 UC 3444 130 12.0 95
Show 17540+3936 KPP 883 102 7.4 95
Show 18007+4145 ES 1558 298 6.3 95
Show 17572+4131 COU1782 190 0.4 97
Show 17533+4000 BU 130 110 1.6 97
Show 17541+3928 HLM 9 285 5.3 98
Show 17548+4110 RAO 605 104 0.8 98
Show 18031+4158 DOO 10 292 4.9 99
Show 17537+3924 TDT 560 198 2.5 103
Show 17528+4038 TDT 552 226 1.3 106
Show 18051+3819 J 1218 167 3.1 109
Show 18064+3837 ES 2017 268 2.6 109
Show 17525+3943 COU1302 172 4.0 110
Show 18019+4202 DAM 103 206 11.0 112
Show 18026+4204 UC 3480 18 23.8 114
Show 18117+4020 UC 3526 137 25.0 116
Show 17523+4057 A 699 26 0.1 117
Show 18028+3815 ALI 867 246 11.4 117
Show 18043+4206 COU1786 Aa,Ab 11 0.2 119
Show 18043+4206 ROE 1 AB 186 24.3 119

 
 
WDS 18017+4011 : COMPONENTS
 
 
  A
B pa=283.5°
sep=0.34"
 
 
18017+4011 A
 
 
Componente originario normalizzato AB Name HD 164941 Coord arcsec 2000 180141.17+401041.9 Mag 8.41
Spectral class A3 (white) PmRA -3.00 PmDE 14.0 SAO 47149
HIP 88284 Tycho2 3106-00396-1 HD 164941 GC 24560
BD BD+40 3263
Tycho2
Tycho2 3106-00396-1 Pflag RAmdeg 270.42143790 DEmdeg 40.17830201
PmRA -3.0 PmDE 13.5 E RAmdeg 6 E DEmdeg 6
E pmRA 1.1 E pmDE 1.1 EpRAm 1991.14 EpDEm 1991.11
Num 9 Q RAmdeg 1.0 Q DEmdeg 1.3 Q pmRA 1.0
Q pmDE 1.5 BTmag 8.431 E BTmag 0.016 VTmag 8.010
E VTmag 0.012 Prox 999 TYC T HIP 88284
CCDM AB RAdeg 270.42144667 DEdeg 40.17827083 EpRA 1990 1.65
EpDE 1990 1.59 E RAdeg 6.0 E DEdeg 5.7 Posflg P
Corr -0.1
SAO
SAO 47149 DelFlag RA1950 PmRA1950 0.0003
DE1950 PmDE1950 0.006 Vmag 7.8 SpType A3
Double code Source 70 CatNum 24560 DM BD+40 3263
DMcomp BDsup HD 164941 M HD 0
GC 24560 RA1950rad 4.71266816 DE1950rad 0.70121793 PmRA2000 0.0007
PmDE2000 0.007
Hipparcos
Catalog H HIP 88284 Proxy H RAhms 18 01 41.17
DEdms +40 10 41.8 Vmag 7.86 VarFlag R Vmag H
RAdeg 270.422 DEdeg 40.1783 AstroRef A Plx 5.98
CCDM 18017+4011 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 263 Rho 0.664 HD 164941 BD BD+40 3263
CD CP Dm number +40 3263 VIred 0.48
SpType A3 R SpType Coord arcsec 2000 180141.17+401041.8
Hipparcos 2
HIP 88284 Sn 15 So 3 Nc 2
RArad 4.7197465317 DErad 0.7012432506 Plx 4.01 PmRA -10.08
PmDE 14.13 E RArad 1.8 E DErad 0.8 E Plx 1.03
E pmRA 2.71 E pmDE 0.96 Hpmag 7.9514 E Hpmag 0.0016
SHp 0.014 VA 0 BV 0.393 E BV 0.017
VI 0.46
CCDM
Ccdm 18017+4011 RComp Comp A Note1
Note2 Discov num DRAs -0.87 DDEs -18.7
R dRAs 10 Year Theta Rho
Obs 2 Vmag 8.6 Sp A3 PmNote *
PmRA -6 PmDE 7 Dm number +40 3263 Cat1 BD
Name2 +40 1643 Cat2 AGK2/3 HD 164941 M HD
ADS BDS A11001 M ADS BDS N IDS IDS 17584N4011A
HIC 88284
 
 
18017+4011 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 180141.14+401042.0 Mag 8.84 PmRA -3.00
PmDE 14.0 Calc delta mag 0.43 Calc coord yes
CCDM
Ccdm 18017+4011 RComp Comp B Note1
Note2 Discov num STF2267 DRAs DDEs
R dRAs Year 1959 Theta 255 Rho 0.8
Obs 99 Vmag 8.6 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A11001 M ADS BDS N IDS IDS 17584N4011B
HIC 88284