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Doubles in session


Current system
18250+2724
STF 2315 AB
HD 169718


Nearby doubles
21' : 18265+2721
BU 264

24' : 18233+2731
HO 83

30' : 18251+2654
AG 361

34' : 18259+2652
UC 3578

37' : 18257+2649
DAM1237

39' : 18230+2742
HJ 1322

42' : 18271+2754
TDS 921

42' : 18253+2805
HO 85AB

44' : 18265+2645
TDT 870

44' : 18280+2708
ES 475

46' : 18257+2639
COU 815

48' : 18238+2808
GRV1261

50' : 18280+2655
TDT 893

51' : 18235+2810
JOD 15

54' : 18249+2817
RAO 391

56' : 18242+2818
A 244

56' : 18208+2732
BU 640

62' : 18267+2627
BU 1326AB

62' : 18223+2633
TDT 819

63' : 18220+2812
UC 3562

65' : 18257+2828
TDT 858

72' : 18296+2647
A 245

73' : 18270+2832
MLB 648

75' : 18224+2617
NSN 704

76' : 18212+2820
STF2312

81' : 18265+2842
HJ 1324



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+2724 STF 2315 AB (HD 169718)

 
 
18h 24m 58.46s +27° 23' 41.3" P.A. 117.00 sep 0.6 mag 6.57,7.77 Sp A0V+A4V dist. 117.51 pc (383.32 l.y.)
 
 
Coord 2000 18250+2724 Discov num STF2315 Comp AB Coord arcsec 2000 18 24 58.46 +27 23 41.3
Date first 1828 Date last 2018 Obs 265
Pa first 282 Pa last 116.6 P.A. Now (θ) 116.6°
Sep first 0.6 Sep last 0.58 Sep. Now (ρ) 0.58"
Mag pri 6.57 Mag sec 7.77 delta mag (ΔM) 1.2 Spectral class A0V+A4V (white/white)
Pri motion ra +003 Sec motion ra +003
Pri motion dec -012 Sec motion dec -012
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
18250+2724 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show HD 169718 86019 18 24 58 +27 23 41 STF 2315 AB 2018 265 117 0.6 6.57 7.77 1.20 Y <===
Show 86019 18 24 58 +27 23 41 STF 2315 AC 2002 4 79 44.9 6.57 13.90 7.33
Show 86019 18 24 58 +27 23 41 BU 9009 AD 2002 3 290 118.0 6.57 11.40 4.83
Show 18 24 50 +27 24 21 HO 84 DE 2015 33 322 4.4 11.40 13.40 2.00
Quintuple system
5 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 169718 Constellation Hercules SAO 86019 HIP 90256
Tycho2 2101-02501-1 Gaia DR2 4585618899835473408 HD 169718 HR 6904
GC 25147 ADS 11334 BD BD+27 3016 Distance 117.51
Distance ly 383.32
 
 
ORBITAL ELEMENTS
 
 
Period (P)2094y Periastron (T)1982y Semi-major axis (a)2.062a
Eccentricity (e)0.6877 Inclination (i)107.6° Longitude of periastron (ω)352.4°
Node (Ω)127.7° Notesn ReferenceWSI2004b
Equinox2000 Last observation2003 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 123.1 0.644
2001 122.7 0.643
2002 122.3 0.642
2003 121.9 0.640
2004 121.5 0.639
2005 121.1 0.637
2006 120.7 0.635
2007 120.3 0.633
2008 119.9 0.631
2009 119.5 0.629
2010 119.1 0.627
2011 118.7 0.624
2012 118.3 0.622
2013 117.9 0.619
2014 117.5 0.616
2015 117.0 0.613
2016 116.6 0.610
2017 116.2 0.607
2018 115.7 0.604
2019 115.3 0.601
2020 114.8 0.597
2021 114.4 0.594
2022 113.9 0.591
2023 113.5 0.587
2024 113.0 0.583
2025 112.5 0.579
2026 112.1 0.576
2027 111.6 0.572
2028 111.1 0.568
2029 110.6 0.564
2030 110.1 0.560


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


 
  


wds18250%2B2724a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 18250+2724 STF 2315 AB (HD 169718) : NOTES
 
 
discov_num notes refcode
STF2315 A is a spectroscopic binary.
AC: 1898 distance probably in error.
 
 
REFERENCES
 
 
refcode metd author reference
WSI2004b Su j Mason, B.D., Hartkopf, W.I., Wycoff, G.L., Rafferty, T.J., Urban, S., & Flagg, L. 2004AJ....128.3012M
WSI2004b +orb AJ 128, 3012, 2004
 
 
DISCOVERER
 
 
idgroup discov author
1 BU Burnham, S.W. (BU 1 - 81)
179 HO Hough, G.W.
206 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
18250+2724 STF2315 AB 2007 274 119 0.6 6.57 7.77 A0V+A4V NOD 182458.46+272341.3
18250+2724 STF2315 AB 2009 280 119 0.6 6.57 7.77 A0V+A4V NOD 182458.46+272341.3
18250+2724 STF2315 AB 2010 282 119 0.6 6.57 7.77 A0V+A4V NOD 182458.46+272341.3
18250+2724 STF2315 AB 2011 284 118 0.6 6.57 7.77 A0V A4V NO 182458.46+272341.3
18250+2724 STF2315 AB 2013 260 118 0.6 6.57 7.77 A0V+A4V NO 182458.46+272341.3
18250+2724 STF2315 AB 2015 261 114 0.6 6.57 7.77 A0V+A4V NO 182458.46+272341.3
18250+2724 STF2315 AB 2018 262 117 0.6 6.57 7.77 A0V+A4V NO 182458.46+272341.3

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

 
 
WDS 18250+2724 STF 2315 AB (HD 169718) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 18250+2724 STF 2315 AB (HD 169718) : MEASURES
 
 
No records found.

 
 
WDS 18250+2724 (HD 169718) : VIRTUAL EYEPIECE
 
 

18250+2724 STF2315A mag 6.57 Sp A0V 18250+2724 STF2315B sep 0.5 P.A. 119.40 mag 7.77 Sp A4V 18250+2724 STF2315C sep 40.1 P.A. 77.10 mag 13.9 18250+2724 HO 84D sep 117.5 P.A. 290.00 mag 11.4 18250+2724 HO 84E sep 121.0 P.A. 291.10 mag 13.4 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 18250+2724 (HD 169718) : ALADIN DSS IMAGE @ 18h 24m 58.46s +27° 23' 41.3"
 
 
 
 
WDS 18250+2724 STF 2315 AB (HD 169718) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

18250+2724 STF2315AB distance=0' 18250+2724 HO 84DE distance=2' 18265+2721 BU 264 distance=21' 18233+2731 HO 83 distance=24' 18251+2654 AG 361 distance=30' 18259+2652 UC 3578 distance=34' 18257+2649 DAM1237 distance=37' 18230+2742 HJ 1322 distance=39' 18271+2754 TDS 921 distance=42' 18253+2805 HDS2604Aa,Ab distance=42' 18253+2805 HO 85AB distance=42' 18265+2645 TDT 870 distance=44' 18280+2708 ES 475 distance=44' 18257+2639 COU 815 distance=46' 18238+2808 GRV1261 distance=48' 18280+2655 TDT 893 distance=50' 18235+2810 JOD 15 distance=51' 18249+2817 RAO 391 distance=54' 18242+2818 A 244 distance=56' 18208+2732 BU 640 distance=56' 18267+2627 GUI 21DE distance=60' 18267+2627 BU 1326AB distance=62' 18267+2627 BU 1326AC distance=62' 18267+2627 GUI 21AD distance=62' 18223+2633 TDT 819 distance=62' 18220+2812 UC 3562 distance=63' 18257+2828 TDT 858 distance=65' 18296+2647 A 245 distance=72' 18270+2832 MLB 648 distance=73' 18224+2617 NSN 704 distance=75' 18212+2820 STF2312 distance=76' 18253+2605 HDS2605Aa,Ab distance=79' 18253+2605 STF2317A,BC distance=79' 18253+2605 STF2317AD distance=79' 18253+2605 ABH 99AE distance=79' 18253+2605 ABH 99AF distance=79' 18253+2605 STF2317BC distance=80' 18265+2842 HJ 1324 distance=81' 18298+2818 UC 3594 distance=84' 18255+2600 STF2318 distance=84' 18280+2837 COU 638 distance=85' 18270+2603 L 24 distance=86' 18306+2805 ES 476AB distance=86' 18306+2805 ES 476AC distance=86' 18190+2643 TDT 792 distance=89' 18191+2808 HJ 1318 distance=90' 18185+2749 COU1008 distance=91' 18227+2849 UC 3566 distance=91' 18215+2603 A 243 distance=93' 18278+2557 DAM 285 distance=95' 18273+2856 HO 433 distance=98' 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+2724 STF2315 AB 117 0.6
Show 18250+2724 STF2315 AC 79 44.9
Show 18250+2724 BU 9009 AD 290 118.0
Show 18250+2724 HO 84 DE 322 4.4 2
Show 18265+2721 BU 264 8.0 21
Show 18233+2731 HO 83 115 0.8 24
Show 18251+2654 AG 361 13 3.8 30
Show 18259+2652 UC 3578 185 4.5 34
Show 18257+2649 DAM1237 10 10.6 37
Show 18230+2742 HJ 1322 239 21.8 39
Show 18271+2754 TDS 921 315 0.9 42
Show 18253+2805 HDS2604 Aa,Ab 212 0.7 42
Show 18253+2805 HO 85 AB 196 4.9 42
Show 18265+2645 TDT 870 73 0.9 44
Show 18280+2708 ES 475 223 10.7 44
Show 18257+2639 COU 815 144 1.6 46
Show 18238+2808 GRV1261 16 2.2 48
Show 18280+2655 TDT 893 344 0.5 50
Show 18235+2810 JOD 15 176 1.2 51
Show 18249+2817 RAO 391 313 0.1 54
Show 18242+2818 A 244 268 0.6 56
Show 18208+2732 BU 640 322 0.7 56
Show 18267+2627 GUI 21 DE 345 22.9 60
Show 18267+2627 BU 1326 AB 107 5.5 62
Show 18267+2627 BU 1326 AC 60 61.8 62
Show 18267+2627 GUI 21 AD 285 162.8 62
Show 18223+2633 TDT 819 216 0.6 62
Show 18220+2812 UC 3562 313 15.6 63
Show 18257+2828 TDT 858 57 0.4 65
Show 18296+2647 A 245 1 3.4 72
Show 18270+2832 MLB 648 22 10.1 73
Show 18224+2617 NSN 704 142 4.0 75
Show 18212+2820 STF2312 341 1.7 76
Show 18253+2605 HDS2605 Aa,Ab 84 1.2 79
Show 18253+2605 STF2317 A,BC 224 23.0 79
Show 18253+2605 STF2317 AD 189 44.5 79
Show 18253+2605 ABH 99 AE 206 38.2 79
Show 18253+2605 ABH 99 AF 208 68.7 79
Show 18253+2605 STF2317 BC 323 1.4 80
Show 18265+2842 HJ 1324 14 5.6 81
Show 18298+2818 UC 3594 71 13.4 84
Show 18255+2600 STF2318 248 21.0 84
Show 18280+2837 COU 638 136 3.3 85
Show 18270+2603 L 24 273 3.4 86
Show 18306+2805 ES 476 AB 347 2.8 86
Show 18306+2805 ES 476 AC 325 28.9 86
Show 18190+2643 TDT 792 213 0.8 89
Show 18191+2808 HJ 1318 140 10.0 90
Show 18185+2749 COU1008 92 2.0 91
Show 18227+2849 UC 3566 180 32.0 91
Show 18215+2603 A 243 69 2.2 93

 
 
WDS 18250+2724 : COMPONENTS
 
 
  A B C D
B pa=119.4°
sep=0.53"
 
C pa=77.1°
sep=40.06"
pa=76.6°
sep=39.67"
 
D pa=290.0°
sep=117.46"
pa=290.0°
sep=117.98"
pa=281.8°
sep=152.65"
 
E pa=291.1°
sep=120.95"
pa=291.1°
sep=121.48"
pa=282.8°
sep=155.77"
pa=325.0°
sep=4.24"
 
 
18250+2724 A
 
 
Name HD 169718 Coord arcsec 2000 182458.46+272341.3 Mag 6.57 Spectral class A0V (white)
PmRA 3.00 PmDE -12.0 SAO 86019 HIP 90256
Tycho2 2101-02501-1 HD 169718 HR 6904 GC 25147
BD BD+27 3016
Tycho2
Tycho2 2101-02501-1 Pflag RAmdeg 276.24362667 DEmdeg 27.39476954
PmRA 2.8 PmDE -11.5 E RAmdeg 4 E DEmdeg 4
E pmRA 1.4 E pmDE 1.3 EpRAm 1991.43 EpDEm 1991.49
Num 9 Q RAmdeg 0.8 Q DEmdeg 1.5 Q pmRA 0.6
Q pmDE 1.4 BTmag 6.400 E BTmag 0.014 VTmag 6.339
E VTmag 0.010 Prox 999 TYC T HIP 90256
CCDM AB RAdeg 276.24361917 DEdeg 27.39479611 EpRA 1990 1.55
EpDE 1990 1.64 E RAdeg 3.5 E DEdeg 3.5 Posflg P
Corr 0.1
SAO
SAO 86019 DelFlag RA1950 PmRA1950 0
DE1950 PmDE1950 0.009 Vmag 6.2 SpType A0
Double code Source 70 CatNum 25147 DM BD+27 3016
DMcomp BDsup HD 169718 M HD 0
GC 25147 RA1950rad 4.81267848 DE1950rad 0.47762895 PmRA2000 0.0002
PmDE2000 0.008
Hipparcos
Catalog H HIP 90256 Proxy H RAhms 18 24 58.46
DEdms +27 23 41.3 Vmag 6.27 VarFlag R Vmag H
RAdeg 276.244 DEdeg 27.3948 AstroRef A Plx 8.41
CCDM 18250+2724 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 127 Rho 0.653 HD 169718 BD BD+27 3016
CD CP Dm number +27 3016 VIred 0.06
SpType A2Vn R SpType Coord arcsec 2000 182458.46+272341.3
Hipparcos 2
HIP 90256 Sn 15 So 3 Nc 2
RArad 4.8213600866 DErad 0.4781297772 Plx 8.51 PmRA 1.77
PmDE -15.19 E RArad 0.43 E DErad 0.43 E Plx 0.62
E pmRA 0.63 E pmDE 0.54 Hpmag 6.2919 E Hpmag 0.0006
SHp 0.008 VA 0 BV 0.053 E BV 0.005
VI 0.07
CCDM
Ccdm 18250+2724 RComp Comp A Note1
Note2 Discov num DRAs -1.50 DDEs -20.0
R dRAs 10 Year Theta Rho
Obs 3 Vmag 6.6 Sp A0 PmNote *
PmRA 8 PmDE -28 Dm number +27 3016 Cat1 BD
Name2 +27 1755 Cat2 AGK2/3 HD 169718 M HD
ADS BDS A11334 M ADS BDS N IDS IDS 18210N2720A
HIC 90256
 
 
18250+2724 B
 
 
Coord arcsec 2000 182458.49+272341.0 Mag 7.77 Spectral class A4V (white) PmRA 3.00
PmDE -12.0 Calc delta mag 1.2 Calc coord yes
CCDM
Ccdm 18250+2724 RComp Comp B Note1 *
Note2 Discov num STF2315 DRAs DDEs
R dRAs Year 1830 Theta Rho
Obs 99 Vmag 7.6 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A11334 M ADS BDS N IDS IDS 18210N2720B
HIC 90256
 
 
18250+2724 C
 
 
Coord arcsec 2000 182501.39+272350.2 Mag 13.9 PmRA 12.00 PmDE 3.0
Calc delta mag 7.33 Calc coord yes
CCDM
Ccdm 18250+2724 RComp Comp C Note1
Note2 Discov num STF2315 DRAs DDEs
R dRAs Year 1934 Theta 080 Rho 44.9
Obs 2 Vmag 13.5 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A11334 M ADS BDS N N IDS IDS 18210N2720C
HIC
 
 
18250+2724 D
 
 
Coord arcsec 2000 182450.17+272421.4 Coord calc 182450.17+272421.4 Mag 11.4 PmRA 6.00
PmDE -19.0 Calc delta mag 4.83
 
 
18250+2724 E
 
 
Coord arcsec 2000 182449.99+272424.9 Mag 13.4 Calc delta mag 6.83 Calc coord yes