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Doubles in session


Current system
18253+2805
HDS 2604 Aa,Ab


Nearby doubles
14' : 18249+2817
RAO 391

21' : 18242+2818
A 244

22' : 18238+2808
GRV1261

24' : 18257+2828
TDT 858

26' : 18235+2810
JOD 15

26' : 18271+2754
TDS 921

35' : 18270+2832
MLB 648

40' : 18265+2842
HJ 1324

41' : 18230+2742
HJ 1322

42' : 18250+2724
STF2315AB

43' : 18233+2731
HO 83

46' : 18220+2812
UC 3562

47' : 18265+2721
BU 264

48' : 18280+2837
COU 638

56' : 18227+2849
UC 3566

57' : 18273+2856
HO 433

58' : 18212+2820
STF2312

61' : 18298+2818
UC 3594

68' : 18280+2708
ES 475

69' : 18208+2732
BU 640

70' : 18306+2805
ES 476AB

71' : 18251+2654
AG 361

74' : 18259+2652
UC 3578

77' : 18257+2649
DAM1237

79' : 18280+2655
TDT 893

82' : 18265+2645
TDT 870



Selections
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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.

18253+2805 HDS 2604 Aa,Ab

 
 
18h 25m 20.37s +28° 04' 59.0" P.A. 212.00 sep 0.7 mag 8.69,11.30 Sp B9 dist. 641.03 pc (2091.04 l.y.)
 
 
Coord 2000 18253+2805 Discov num HDS2604 Comp Aa,Ab Coord arcsec 2000 18 25 20.37 +28 04 59.0
Date first 1991 Date last 2016 Obs 4
Pa first 208 Pa last 212.1 P.A. Now (θ) 212.1°
Sep first 0.7 Sep last 0.729 Sep. Now (ρ) 0.729"
Mag pri 8.69 Mag sec 11.30 delta mag (ΔM) 2.61 Spectral class B9 (blue-white)
Pri motion ra -003 Sec motion ra
Pri motion dec +002 Sec motion dec
Notes
Nature of this double is uncertain.
 
 
18253+2805 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 86027 18 25 20 +28 04 59 HDS 2604 Aa,Ab 2016 4 212 0.7 8.69 11.30 2.61 <===
Show HD 169818 86027 18 25 20 +28 04 59 HO 85 AB 2016 14 196 4.9 8.68 12.00 3.32
Triple system
2 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Hercules SAO 86027 HIP 90287 Tycho2 2114-00276-1
Gaia DR2 4586495863438223616 HD 169818 BD BD+28 2996 Distance 641.03
Distance ly 2091.04
 
 
WDS 18253+2805 HDS 2604 Aa,Ab : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
HDS Hipparcos Double Star (from additional DD list) ...................
Ho_1883 Ma j Hough, G.W. 1883MNRAS..43..371H
Ho_1883 MNRAS 43, 371, 1883 (data also in Ho_1890) 1890AN....125....1H
Ho_1884 Ma j Hough, G.W. 1884MNRAS..44..365H
Ho_1884 MNRAS 44, 365, 1884 (data also in Ho_1890) 1890AN....125....1H
Ho_1885 Ma j Hough, G.W. 1885MNRAS..45..417H
Ho_1885 MNRAS 45, 417, 1885 (data also in Ho_1890) 1890AN....125....1H
Ho_1886 Ma j Hough, G.W. 1886MNRAS..46..393H
Ho_1886 MNRAS 46, 393, 1886 (data also in Ho_1890) 1890AN....125....1H
Ho_1887 Ma j Hough, G.W. 1887AN....116..273H
Ho_1887 AN 116, 273, 1887
Ho_1890 Ma j Hough, G.W. 1890AN....125....1H
Ho_1890 AN 125, 1, 1890
Ho_1890b Ma j Hough, G.W. 1890AJ......9..177H
Ho_1890b AJ 9, 177, 1890 (some data also in Ho_1890 or Ho_1894b) 1890AN....125....1H
Ho_1894a Ma - Hough, G.W. 1894MNRAS..54..251H
Ho_1894a MNRAS 54, 251, 1894
Ho_1894b Ma j Hough, G.W. (HO 304 - 490) 1894AN....135..281H
Ho_1894b AN 135, 281, 1894
Ho_1894c Ma - Hough, G.W. (measure by Dembowski, H.) 1894AN....135..281H
Ho_1894c AN 135, 281, 1894
Ho_1899a Ma j Hough, G.W. 1899AN....149..65H
Ho_1899a AN 149, 65, 1899
Ho_1899b Ma - Hough, G.W. (measure by Burnham, S.W.) 1899AN....149..65H
Ho_1899b AN 149, 65, 1899
Ho_1907 Ma - Hough, G.W. 1907PFAO....3c...1D
Ho_1907 Pub. Univ. Penn. 3, Pt. 3, 1907 (measures sent to Doolittle)
Ho_1932A Ma - Hough, G.W. 1932QB821.A43......
Ho_1932A cited in ADS, 1932 (unpublished measures sent to Aitken in manuscript by Fox)
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18253+2805 HDS2604 Aa,Ab 1991 1 208 0.7 8.69 11.30 B9 D 182520.37+280459.0
18253+2805 HDS2604 Aa,Ab 2007 2 212 0.7 8.69 11.30 B9 D 182520.37+280459.0
18253+2805 HDS2604 Aa,Ab 2016 3 212 0.7 8.69 11.30 B9 182520.37+280459.0

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

 
 
WDS 18253+2805 HDS 2604 Aa,Ab : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 18253+2805 HDS 2604 Aa,Ab : MEASURES
 
 
No records found.

 
 
WDS 18253+2805 : VIRTUAL EYEPIECE
 
 

18253+2805 HO 85A mag 8.68 Sp B9 18253+2805 HDS2604Ab sep 0.7 P.A. 209.00 mag 11.3 18253+2805 HO 85B sep 4.8 P.A. 193.70 mag 12 virtual eyepiece
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Pass over with the mouse cursor to display the catalog designation.
Radius:
Components only
 
 
WDS 18253+2805 : ALADIN DSS IMAGE @ 18h 25m 20.37s +28° 04' 59.0"
 
 
 
 
WDS 18253+2805 HDS 2604 Aa,Ab : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

18253+2805 HDS2604Aa,Ab distance=0' 18249+2817 RAO 391 distance=14' 18242+2818 A 244 distance=21' 18238+2808 GRV1261 distance=22' 18257+2828 TDT 858 distance=24' 18235+2810 JOD 15 distance=26' 18271+2754 TDS 921 distance=26' 18270+2832 MLB 648 distance=35' 18265+2842 HJ 1324 distance=40' 18230+2742 HJ 1322 distance=41' 18250+2724 HO 84DE distance=42' 18250+2724 STF2315AB distance=42' 18250+2724 STF2315AC distance=42' 18250+2724 BU 9009AD distance=42' 18233+2731 HO 83 distance=43' 18220+2812 UC 3562 distance=46' 18265+2721 BU 264 distance=47' 18280+2837 COU 638 distance=48' 18227+2849 UC 3566 distance=56' 18273+2856 HO 433 distance=57' 18212+2820 STF2312 distance=58' 18298+2818 UC 3594 distance=61' 18280+2708 ES 475 distance=68' 18208+2732 BU 640 distance=69' 18306+2805 ES 476AB distance=70' 18306+2805 ES 476AC distance=70' 18251+2654 AG 361 distance=71' 18259+2652 UC 3578 distance=74' 18257+2649 DAM1237 distance=77' 18280+2655 TDT 893 distance=79' 18265+2645 TDT 870 distance=82' 18191+2808 HJ 1318 distance=83' 18257+2639 COU 815 distance=86' 18185+2749 COU1008 distance=93' 18296+2647 A 245 distance=97' 18267+2627 GUI 21DE distance=99' 18267+2627 BU 1326AB distance=100' 18267+2627 BU 1326AC distance=100' 18267+2627 GUI 21AD distance=100' 18223+2633 TDT 819 distance=101' 18292+2933 HO 434 distance=102' 18173+2825 GRV 232 distance=107' 18269+2950 HJ 1325 distance=108' 18332+2835 MLB 691 distance=109' 18173+2832 LDS4782 distance=110' 18338+2816 MLB 568 distance=113' 18224+2617 NSN 704 distance=115' 18190+2643 TDT 792 distance=118' 18169+2718 MIL 4 distance=120' 18253+2605 HDS2605Aa,Ab distance=120' 18253+2605 STF2317A,BC distance=120' 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 18253+2805 HDS2604 Aa,Ab 212 0.7
Show 18253+2805 HO 85 AB 196 4.9
Show 18249+2817 RAO 391 313 0.1 14
Show 18242+2818 A 244 268 0.6 21
Show 18238+2808 GRV1261 16 2.2 22
Show 18257+2828 TDT 858 57 0.4 24
Show 18235+2810 JOD 15 176 1.2 26
Show 18271+2754 TDS 921 315 0.9 26
Show 18270+2832 MLB 648 22 10.1 35
Show 18265+2842 HJ 1324 14 5.6 40
Show 18230+2742 HJ 1322 239 21.8 41
Show 18250+2724 HO 84 DE 322 4.4 42
Show 18250+2724 STF2315 AB 117 0.6 42
Show 18250+2724 STF2315 AC 79 44.9 42
Show 18250+2724 BU 9009 AD 290 118.0 42
Show 18233+2731 HO 83 115 0.8 43
Show 18220+2812 UC 3562 313 15.6 46
Show 18265+2721 BU 264 8.0 47
Show 18280+2837 COU 638 136 3.3 48
Show 18227+2849 UC 3566 180 32.0 56
Show 18273+2856 HO 433 328 9.8 57
Show 18212+2820 STF2312 341 1.7 58
Show 18298+2818 UC 3594 71 13.4 61
Show 18280+2708 ES 475 223 10.7 68
Show 18208+2732 BU 640 322 0.7 69
Show 18306+2805 ES 476 AB 347 2.8 70
Show 18306+2805 ES 476 AC 325 28.9 70
Show 18251+2654 AG 361 13 3.8 71
Show 18259+2652 UC 3578 185 4.5 74
Show 18257+2649 DAM1237 10 10.6 77
Show 18280+2655 TDT 893 344 0.5 79
Show 18265+2645 TDT 870 73 0.9 82
Show 18191+2808 HJ 1318 140 10.0 83
Show 18257+2639 COU 815 144 1.6 86
Show 18185+2749 COU1008 92 2.0 93
Show 18296+2647 A 245 1 3.4 97
Show 18267+2627 GUI 21 DE 345 22.9 99
Show 18267+2627 BU 1326 AB 107 5.5 100
Show 18267+2627 BU 1326 AC 60 61.8 100
Show 18267+2627 GUI 21 AD 285 162.8 100
Show 18223+2633 TDT 819 216 0.6 101
Show 18292+2933 HO 434 184 18.6 102
Show 18173+2825 GRV 232 170 16.7 107
Show 18269+2950 HJ 1325 311 6.5 108
Show 18332+2835 MLB 691 18 4.3 109
Show 18173+2832 LDS4782 61 48.1 110
Show 18338+2816 MLB 568 207 3.8 113
Show 18224+2617 NSN 704 142 4.0 115
Show 18190+2643 TDT 792 213 0.8 118
Show 18169+2718 MIL 4 130 16.6 120
Show 18253+2605 HDS2605 Aa,Ab 84 1.2 120

 
 
WDS 18253+2805 : COMPONENTS
 
 
  A Ab
Ab pa=209.0°
sep=0.71"
 
B pa=193.7°
sep=4.82"
pa=191.2°
sep=4.15"
 
 
18253+2805 A
 
 
Name HD 169818 Coord arcsec 2000 182520.37+280459.0 Mag 8.68 Spectral class B9 (blue-white)
PmRA 1.00 PmDE 7.0 SAO 86027 HIP 90287
Tycho2 2114-00276-1 HD 169818 ADS 11338 BD BD+28 2996
Tycho2
Tycho2 2114-00276-1 Pflag X RAmdeg DEmdeg
PmRA PmDE E RAmdeg E DEmdeg
E pmRA E pmDE EpRAm EpDEm
Num Q RAmdeg Q DEmdeg Q pmRA
Q pmDE BTmag 8.734 E BTmag 0.016 VTmag 8.678
E VTmag 0.013 Prox 999 TYC T HIP 90287
CCDM AC RAdeg 276.33488944 DEdeg 28.08305194 EpRA 1990 1.59
EpDE 1990 1.64 E RAdeg 5.9 E DEdeg 5.6 Posflg
Corr 0.0
SAO
SAO 86027 DelFlag RA1950 PmRA1950 -0.0014
DE1950 PmDE1950 -0.007 Vmag 8 SpType B9
Double code Source 34 CatNum 8888 DM BD+28 2996
DMcomp BDsup HD 169818 M HD 0
GC RA1950rad 4.81434269 DE1950rad 0.48962204 PmRA2000 -0.0012
PmDE2000 -0.008
Hipparcos
Catalog H HIP 90287 Proxy H RAhms 18 25 20.37
DEdms +28 04 59.0 Vmag 8.57 VarFlag R Vmag H
RAdeg 276.335 DEdeg 28.0831 AstroRef A Plx 3.21
CCDM 18253+2805 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual D M HIP AC
Theta 208 Rho 0.735 HD 169818 BD BD+28 2996
CD CP Dm number +28 2996 VIred 0.07
SpType B9 R SpType Coord arcsec 2000 182520.37+280459.0
Hipparcos 2
HIP 90287 Sn 15 So 3 Nc 2
RArad 4.8229537395 DErad 0.4901418368 Plx 1.56 PmRA -4.22
PmDE 0.12 E RArad 0.97 E DErad 1.27 E Plx 1.49
E pmRA 1.14 E pmDE 1.58 Hpmag 8.5955 E Hpmag 0.0019
SHp 0.02 VA 0 BV 0.048 E BV 0.015
VI 0.06
CCDM
Ccdm 18253+2805 RComp Comp A Note1
Note2 Discov num DRAs 2.37 DDEs -1.0
R dRAs 82 Year Theta Rho
Obs 3 Vmag 8.7 Sp B9 PmNote *
PmRA -3 PmDE 2 Dm number +28 2996 Cat1 BD
Name2 +28 1785 Cat2 AGK2/3 HD 169818 M HD
ADS BDS A11338 M ADS BDS N IDS IDS 18214N2802A
HIC 90287
 
 
18253+2805 Ab
 
 
Coord arcsec 2000 182520.34+280458.4 Mag 11.3 Calc delta mag 2.61 Calc coord yes
 
 
18253+2805 B
 
 
Coord arcsec 2000 182520.28+280454.3 Mag 12 Calc delta mag 3.31 Calc coord yes
CCDM
Ccdm 18253+2805 RComp Comp B Note1
Note2 Discov num HO 85 DRAs DDEs
R dRAs Year 1885 Theta 195 Rho 4.8
Obs 5 Vmag 12.0 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A11338 M ADS BDS N IDS IDS 18214N2802B
HIC 90287