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Current system
18306+2805
ES 476 AC


Nearby doubles
17' : 18298+2818
UC 3594

45' : 18338+2816
MLB 568

46' : 18332+2835
MLB 691

48' : 18280+2837
COU 638

48' : 18271+2754
TDS 921

54' : 18270+2832
MLB 648

65' : 18265+2842
HJ 1324

67' : 18280+2708
ES 475

68' : 18273+2856
HO 433

68' : 18349+2840
LDS4791

70' : 18257+2828
TDT 858

70' : 18253+2805
HO 85AB

71' : 18350+2844
STF2344

71' : 18265+2721
BU 264

71' : 18355+2735
KPP1647

73' : 18353+2842
OSO 101AB

75' : 18349+2717
COU 639

77' : 18249+2817
RAO 391

78' : 18280+2655
TDT 893

80' : 18296+2647
A 245

86' : 18349+2701
ES 477

86' : 18250+2724
STF2315AB

87' : 18242+2818
A 244

91' : 18292+2933
HO 434

91' : 18238+2808
GRV1261

95' : 18235+2810
JOD 15



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

18306+2805 ES 476 AC

 
 
18h 30m 36.44s +28° 04' 52.1" P.A. 325.00 sep 28.9 mag 11.00,12.00 Sp F5
 
 
Coord 2000 18306+2805 Discov num ES  476 Comp AC Coord arcsec 2000 18 30 36.44 +28 04 52.1
Date first 1897 Date last 2018 Obs 6
Pa first 324 Pa last 324.6 P.A. Now (θ) 324.6°
Sep first 28.3 Sep last 28.935 Sep. Now (ρ) 28.935"
Mag pri 11.00 Mag sec 12.00 delta mag (ΔM) 1 Spectral class F5 (yellow-white)
Pri motion ra +006 Sec motion ra -001
Pri motion dec -038 Sec motion dec +000
Notes N (See Notes)
rPM=1.004
This double is not physical.
 
 
18306+2805 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 18 30 36 +28 04 52 ES 476 AB 2018 11 347 2.8 11.00 11.60 0.60
Show 18 30 36 +28 04 52 ES 476 AC 2018 6 325 28.9 11.00 12.00 1.00 <===
Triple system
3 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Lyra Tycho2 2114-00090-1 Gaia DR2 4587202303959146368 DM BD+27 3041
 
 
WDS 18306+2805 ES 476 AC : NOTES
 
 
discov_num notes refcode
ES 476 MLB 649 is identical Hei1983a
 
 
REFERENCES
 
 
refcode metd author reference
Hei1983a M+ j Heintz, W.D. 1983ApJS...51..249H
Hei1983a +Po ApJS 51, 249, 1983
 
 
DISCOVERER
 
 
idgroup discov author
1 ES Espin, T.E.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18306+2805 ES 476 AC 2000 3 324 27.8 11.00 12.00 F5 N D 183036.44+280452.1
18306+2805 ES 476 AC 2002 4 325 28.7 11.00 12.00 F5 N D 183036.44+280452.1
18306+2805 ES 476 AC 2015 5 325 28.9 11.00 12.00 F5 N 183036.44+280452.1
18306+2805 ES 476 AC 2018 6 325 28.9 11.00 12.00 F5 N 183036.44+280452.1

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

 
 
WDS 18306+2805 ES 476 AC : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 18306+2805 ES 476 AC : MEASURES
 
 
No records found.

 
 
WDS 18306+2805 : VIRTUAL EYEPIECE
 
 

18306+2805 ES 476A mag 11 Sp F5 18306+2805 ES 476B sep 2.8 P.A. 348.00 mag 11.6 18306+2805 ES 476C sep 27.8 P.A. 327.90 mag 12 virtual eyepiece
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Pass over with the mouse cursor to display the catalog designation.
Radius:
Components only
 
 
WDS 18306+2805 : ALADIN DSS IMAGE @ 18h 30m 36.44s +28° 04' 52.1"
 
 
 
 
WDS 18306+2805 ES 476 AC : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

18306+2805 ES 476AC distance=0' 18298+2818 UC 3594 distance=17' 18338+2816 MLB 568 distance=45' 18332+2835 MLB 691 distance=46' 18280+2837 COU 638 distance=48' 18271+2754 TDS 921 distance=48' 18270+2832 MLB 648 distance=54' 18265+2842 HJ 1324 distance=65' 18280+2708 ES 475 distance=67' 18273+2856 HO 433 distance=68' 18349+2840 LDS4791 distance=68' 18257+2828 TDT 858 distance=70' 18253+2805 HDS2604Aa,Ab distance=70' 18253+2805 HO 85AB distance=70' 18350+2844 STF2344 distance=71' 18265+2721 BU 264 distance=71' 18355+2735 KPP1647 distance=71' 18353+2842 OSO 101AB distance=73' 18353+2842 OSO 101AC distance=73' 18353+2842 OSO 101AD distance=73' 18353+2842 OSO 101AE distance=73' 18353+2842 OSO 101AF distance=73' 18349+2717 COU 639 distance=75' 18249+2817 RAO 391 distance=77' 18280+2655 TDT 893 distance=78' 18296+2647 A 245 distance=80' 18349+2701 ES 477 distance=86' 18250+2724 STF2315AB distance=86' 18250+2724 STF2315AC distance=86' 18250+2724 BU 9009AD distance=86' 18242+2818 A 244 distance=87' 18250+2724 HO 84DE distance=87' 18292+2933 HO 434 distance=91' 18238+2808 GRV1261 distance=91' 18235+2810 JOD 15 distance=95' 18259+2652 UC 3578 distance=97' 18373+2845 SLE 99 distance=97' 18265+2645 TDT 870 distance=98' 18336+2934 RAO 393 distance=98' 18379+2823 AG 362 distance=99' 18257+2649 DAM1237 distance=100' 18251+2654 AG 361 distance=102' 18233+2731 HO 83 distance=103' 18383+2818 SLE 361 distance=104' 18230+2742 HJ 1322 distance=108' 18257+2639 COU 815 distance=108' 18369+2915 SLE 98 distance=109' 18388+2823 SLE 103 distance=109' 18384+2842 STF2356 distance=109' 18267+2627 BU 1326AB distance=112' 18267+2627 BU 1326AC distance=112' 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 18306+2805 ES 476 AB 347 2.8
Show 18306+2805 ES 476 AC 325 28.9
Show 18298+2818 UC 3594 71 13.4 17
Show 18338+2816 MLB 568 207 3.8 45
Show 18332+2835 MLB 691 18 4.3 46
Show 18280+2837 COU 638 136 3.3 48
Show 18271+2754 TDS 921 315 0.9 48
Show 18270+2832 MLB 648 22 10.1 54
Show 18265+2842 HJ 1324 14 5.6 65
Show 18280+2708 ES 475 223 10.7 67
Show 18273+2856 HO 433 328 9.8 68
Show 18349+2840 LDS4791 77 15.6 68
Show 18257+2828 TDT 858 57 0.4 70
Show 18253+2805 HDS2604 Aa,Ab 212 0.7 70
Show 18253+2805 HO 85 AB 196 4.9 70
Show 18350+2844 STF2344 175 1.5 71
Show 18265+2721 BU 264 8.0 71
Show 18355+2735 KPP1647 334 12.7 71
Show 18353+2842 OSO 101 AB 321 9.7 73
Show 18353+2842 OSO 101 AC 121 11.1 73
Show 18353+2842 OSO 101 AD 132 15.3 73
Show 18353+2842 OSO 101 AE 88 17.8 73
Show 18353+2842 OSO 101 AF 49 24.5 73
Show 18349+2717 COU 639 268 0.7 75
Show 18249+2817 RAO 391 313 0.1 77
Show 18280+2655 TDT 893 344 0.5 78
Show 18296+2647 A 245 1 3.4 80
Show 18349+2701 ES 477 227 10.2 86
Show 18250+2724 STF2315 AB 117 0.6 86
Show 18250+2724 STF2315 AC 79 44.9 86
Show 18250+2724 BU 9009 AD 290 118.0 86
Show 18242+2818 A 244 268 0.6 87
Show 18250+2724 HO 84 DE 322 4.4 87
Show 18292+2933 HO 434 184 18.6 91
Show 18238+2808 GRV1261 16 2.2 91
Show 18235+2810 JOD 15 176 1.2 95
Show 18259+2652 UC 3578 185 4.5 97
Show 18373+2845 SLE 99 317 4.5 97
Show 18265+2645 TDT 870 73 0.9 98
Show 18336+2934 RAO 393 69 1.7 98
Show 18379+2823 AG 362 341 28.7 99
Show 18257+2649 DAM1237 10 10.6 100
Show 18251+2654 AG 361 13 3.8 102
Show 18233+2731 HO 83 115 0.8 103
Show 18383+2818 SLE 361 8 19.9 104
Show 18230+2742 HJ 1322 239 21.8 108
Show 18257+2639 COU 815 144 1.6 108
Show 18369+2915 SLE 98 315 11.2 109
Show 18388+2823 SLE 103 13 8.4 109
Show 18384+2842 STF2356 63 1.0 109
Show 18267+2627 BU 1326 AB 107 5.5 112

 
 
WDS 18306+2805 : COMPONENTS
 
 
  A B
B pa=348.0°
sep=2.76"
 
C pa=327.9°
sep=27.84"
pa=325.8°
sep=25.27"
 
 
18306+2805 A
 
 
Coord arcsec 2000 183036.44+280452.1 Mag 11 Spectral class F5 (yellow-white) PmRA 6.00
PmDE -38.0 Tycho2 2114-00090-1 ADS 11413 DM BD+27 3041
Tycho2
Tycho2 2114-00090-1 Pflag RAmdeg 277.65189799 DEmdeg 28.08115569
PmRA 2.1 PmDE -5.2 E RAmdeg 51 E DEmdeg 44
E pmRA 1.9 E pmDE 1.9 EpRAm 1983.01 EpDEm 1985.17
Num 4 Q RAmdeg 1.2 Q DEmdeg 2.5 Q pmRA 1.2
Q pmDE 2.5 BTmag 11.676 E BTmag 0.074 VTmag 11.280
E VTmag 0.086 Prox 999 TYC T HIP
CCDM RAdeg 277.65189250 DEdeg 28.08116750 EpRA 1990 1.65
EpDE 1990 1.74 E RAdeg 54.0 E DEdeg 46.4 Posflg
Corr 0.1
CCDM
Ccdm 18306+2805 RComp Comp A Note1
Note2 Discov num DRAs 0.34 DDEs -8.8
R dRAs 10 Year Theta Rho
Obs 3 Vmag 11.0 Sp F5 PmNote *
PmRA -7 PmDE -23 Dm number +27 3041 Cat1 BD
Name2 +28 1797 Cat2 AGK2/3 HD M HD
ADS BDS A11413 M ADS BDS N IDS IDS 18267N2801A
HIC
 
 
18306+2805 B
 
 
Coord arcsec 2000 183036.40+280454.8 Mag 11.6 PmRA 18.00 PmDE 21.0
Calc delta mag 0.6 Calc coord yes
CCDM
Ccdm 18306+2805 RComp Comp B Note1
Note2 Discov num ES 476 DRAs DDEs
R dRAs Year 1907 Theta 349 Rho 2.5
Obs 3 Vmag 11.6 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A11413 M ADS BDS N IDS IDS 18267N2801B
HIC
 
 
18306+2805 C
 
 
Coord arcsec 2000 183035.32+280515.7 Mag 12 PmRA -1.00 PmDE 0.0
Calc delta mag 1 Calc coord yes
CCDM
Ccdm 18306+2805 RComp Comp C Note1
Note2 Discov num ES 476 DRAs DDEs
R dRAs Year 1930 Theta 324 Rho 28.0
Obs 1 Vmag 11.9 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A11413 M ADS BDS N IDS IDS 18267N2801C
HIC