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Current system
19471-0809
A 108
HD 186847


Nearby doubles
34' : 19466-0841
TDT1731

39' : 19460-0735
HDS2808

40' : 19447-0825
AOT 78

41' : 19494-0746
RST4642

49' : 19453-0849
AOT 79

57' : 19498-0730
UC 4033

62' : 19431-0818
STFA 45AB

62' : 19510-0749
UC 4039

72' : 19438-0901
AOT 77

75' : 19521-0802
GWP2903

77' : 19436-0904
HO 579AB

86' : 19463-0645
UC 4022

90' : 19419-0854
TDT1651

90' : 19436-0656
LDS5884

99' : 19408-0738
GWP2881

102' : 19463-0950
BRT 553

106' : 19401-0759
YSC 161

106' : 19432-0937
AOT 76

107' : 19541-0834
HJ 900

108' : 19448-0627
TDT1702

108' : 19438-0945
RST4640

108' : 19416-0659
J 1856

111' : 19506-0947
KPP 444

112' : 19408-0707
J 2553

112' : 19546-0814
STF2594AB

112' : 19539-0858
RST4050



Selections
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Binary Systems
Triple Systems
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Multiple Systems
Neglected List I
Neglected List II
Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

19471-0809 A 108 (HD 186847)

 
 
19h 47m 08.04s -08° 09' 09.9" P.A. 107.00 sep 0.3 mag 8.74,9.24 Sp K0 dist. 171.82 pc (560.48 l.y.)
 
 
Coord 2000 19471-0809 Discov num A   108 Comp Coord arcsec 2000 19 47 08.04 -08 09 09.9
Date first 1900 Date last 2018 Obs 43
Pa first 183 Pa last 107.3 P.A. Now (θ) 111.1°
Sep first 0.3 Sep last 0.315 Sep. Now (ρ) 0.319"
Mag pri 8.74 Mag sec 9.24 delta mag (ΔM) 0.5 Spectral class K0 (yellow-orange)
Pri motion ra +003 Sec motion ra
Pri motion dec -024 Sec motion dec
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 186847 Constellation Aquila SAO 143795 HIP 97350
Tycho2 5724-01075-1 Gaia DR2 4196236344448739456 HD 186847 ADS 12911
BD BD-08 5103 Distance 171.82 Distance ly 560.48
 
 
ORBITAL ELEMENTS
 
 
Period (P)242.85y Periastron (T)1946.34y Semi-major axis (a)0.299a
Eccentricity (e)0.717 Inclination (i)51.4° Longitude of periastron (ω)265°
Node (Ω)53.8° Notes ReferenceDoc2017l
Equinox2000 Last observation2009 Grade3(1=Definitive, 9=Indet.)
label theta rho
2000 97.3 0.298
2001 98.0 0.300
2002 98.6 0.301
2003 99.3 0.302
2004 99.9 0.303
2005 100.5 0.305
2006 101.1 0.306
2007 101.7 0.307
2008 102.4 0.308
2009 103.0 0.309
2010 103.6 0.310
2011 104.2 0.310
2012 104.8 0.311
2013 105.4 0.312
2014 105.9 0.313
2015 106.5 0.314
2016 107.1 0.314
2017 107.7 0.315
2018 108.3 0.316
2019 108.9 0.316
2020 109.4 0.317
2021 110.0 0.318
2022 110.6 0.318
2023 111.1 0.319
2024 111.7 0.319
2025 112.3 0.320
2026 112.8 0.320
2027 113.4 0.321
2028 114.0 0.321
2029 114.5 0.321
2030 115.1 0.322


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


 
  


wds19471-0809e.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 19471-0809 A 108 (HD 186847) : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
Doc2017l orb - Docobo, J.A. & Ling, J.F. 2017IAUDS.193S...1D
Doc2017l Inf. Circ. 193, 1, 2017
 
 
DISCOVERER
 
 
idgroup discov author
1 A Aitken, R.G.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
19471-0809 A 108 1996 38 98 0.3 8.74 9.24 K0 NO 194708.04-080909.9
19471-0809 A 108 2008 40 101 0.3 8.74 9.24 K0 NO 194708.04-080909.9
19471-0809 A 108 2009 41 100 0.3 8.74 9.24 K0 NO 194708.04-080909.9
19471-0809 A 108 2018 42 107 0.3 8.74 9.24 K0 O 194708.04-080909.9

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

 
 
WDS 19471-0809 A 108 (HD 186847) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 19471-0809 A 108 (HD 186847) : MEASURES
 
 
No records found.

 
 
WDS 19471-0809 (HD 186847) : VIRTUAL EYEPIECE
 
 

19471-0809 A 108A mag 8.74 Sp K0 19471-0809 A 108B sep 0.3 P.A. 107.50 mag 9.24 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 19471-0809 (HD 186847) : ALADIN DSS IMAGE @ 19h 47m 08.04s -08° 09' 09.9"
 
 
 
 
WDS 19471-0809 A 108 (HD 186847) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

19471-0809 A 108 distance=0' 19466-0841 TDT1731 distance=34' 19460-0735 HDS2808 distance=39' 19447-0825 AOT 78 distance=40' 19494-0746 RST4642 distance=41' 19453-0849 AOT 79 distance=49' 19498-0730 UC 4033 distance=57' 19431-0818 HDS2799Ba,Bb distance=61' 19431-0818 STFA 45AB distance=62' 19510-0749 UC 4039 distance=62' 19438-0901 AOT 77 distance=72' 19521-0802 GWP2903 distance=75' 19436-0904 HO 579AB distance=77' 19436-0904 HO 579AC distance=77' 19463-0645 UC 4022 distance=86' 19419-0854 TDT1651 distance=90' 19436-0656 LDS5884 distance=90' 19408-0738 GWP2881 distance=99' 19463-0950 BRT 553 distance=102' 19401-0759 YSC 161 distance=106' 19432-0937 AOT 76 distance=106' 19541-0834 HJ 900 distance=107' 19448-0627 TDT1702 distance=108' 19438-0945 RST4640 distance=108' 19416-0659 J 1856 distance=108' 19506-0947 KPP 444 distance=111' 19408-0707 J 2553 distance=112' 19546-0814 STF2594AB distance=112' 19539-0858 RST4050 distance=112' 19459-0615 GWP2890 distance=116' 19447-0958 BRT1952 distance=116' 19428-0628 HDS2796 distance=120' 19502-1000 RST4643AB distance=120' 19502-1000 GII 286Aa,Ab distance=120' 19556-0747 TDT1855 distance=128' 19521-0625 J 2287 distance=129' 19384-0819 HJ 892 distance=131' 19431-0612 GWP2884 distance=132' 19393-0644 GWP2875 distance=145' 19422-1015 RST4639 distance=147' 19567-0737 RST4646 distance=147' 19553-0644 STF2597AB distance=149' 19553-0644 BOW 8AC distance=149' 19439-0547 BWL 52AB distance=151' 19439-0547 BWL 52AC distance=151' 19439-0547 BWL 52AD distance=151' 19439-0547 BWL 52AE distance=151' 19439-0547 BWL 52AF distance=151' 19439-0547 BWL 52AG distance=151' 19439-0547 BWL 52AH distance=151' 19520-1021 BU 148AB distance=151' 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 19471-0809 A 108 107 0.3
Show 19466-0841 TDT1731 52 0.7 34
Show 19460-0735 HDS2808 175 0.1 39
Show 19447-0825 AOT 78 256 17.2 40
Show 19494-0746 RST4642 260 0.4 41
Show 19453-0849 AOT 79 348 15.5 49
Show 19498-0730 UC 4033 6 44.5 57
Show 19431-0818 HDS2799 Ba,Bb 232 0.5 61
Show 19431-0818 STFA 45 AB 145 96.3 62
Show 19510-0749 UC 4039 169 10.3 62
Show 19438-0901 AOT 77 233 13.8 72
Show 19521-0802 GWP2903 49 119.6 75
Show 19436-0904 HO 579 AB 305 2.7 77
Show 19436-0904 HO 579 AC 153 63.8 77
Show 19463-0645 UC 4022 29 48.6 86
Show 19419-0854 TDT1651 187 0.6 90
Show 19436-0656 LDS5884 52 10.3 90
Show 19408-0738 GWP2881 276 27.9 99
Show 19463-0950 BRT 553 91 19.5 102
Show 19401-0759 YSC 161 253 0.1 106
Show 19432-0937 AOT 76 110 15.4 106
Show 19541-0834 HJ 900 75 46.5 107
Show 19448-0627 TDT1702 258 0.5 108
Show 19438-0945 RST4640 305 0.6 108
Show 19416-0659 J 1856 86 8.5 108
Show 19506-0947 KPP 444 223 3.6 111
Show 19408-0707 J 2553 265 3.9 112
Show 19546-0814 STF2594 AB 171 36.3 112
Show 19539-0858 RST4050 154 0.9 112
Show 19459-0615 GWP2890 153 254.9 116
Show 19447-0958 BRT1952 356 3.6 116
Show 19428-0628 HDS2796 178 2.9 120
Show 19502-1000 RST4643 AB 264 1.5 120
Show 19502-1000 GII 286 Aa,Ab 126 0.1 120
Show 19556-0747 TDT1855 41 1.5 128
Show 19521-0625 J 2287 170 3.3 129
Show 19384-0819 HJ 892 14 22.2 131
Show 19431-0612 GWP2884 113 298.8 132
Show 19393-0644 GWP2875 267 12.0 145
Show 19422-1015 RST4639 20 0.7 147
Show 19567-0737 RST4646 195 4.6 147
Show 19553-0644 STF2597 AB 100 0.6 149
Show 19553-0644 BOW 8 AC -1 -1.0 149
Show 19439-0547 BWL 52 AB 110 4.2 151
Show 19439-0547 BWL 52 AC 193 5.3 151
Show 19439-0547 BWL 52 AD 245 2.5 151
Show 19439-0547 BWL 52 AE 281 4.9 151
Show 19439-0547 BWL 52 AF 83 6.0 151
Show 19439-0547 BWL 52 AG 94 4.9 151
Show 19439-0547 BWL 52 AH 333 5.8 151
Show 19520-1021 BU 148 AB 219 0.6 151

 
 
WDS 19471-0809 : COMPONENTS
 
 
  A
B pa=107.5°
sep=0.31"
 
 
19471-0809 A
 
 
Componente originario normalizzato AB Name HD 186847 Coord arcsec 2000 194708.04-080909.9 Mag 8.74
Spectral class K0 (yellow-orange) PmRA 3.00 PmDE -24.0 SAO 143795
HIP 97350 Tycho2 5724-01075-1 HD 186847 ADS 12911
BD BD-08 5103
Tycho2
Tycho2 5724-01075-1 Pflag RAmdeg 296.78350289 DEmdeg -8.15281644
PmRA 0.3 PmDE -25.0 E RAmdeg 7 E DEmdeg 8
E pmRA 1.0 E pmDE 1.0 EpRAm 1990.32 EpDEm 1989.63
Num 15 Q RAmdeg 0.9 Q DEmdeg 1.2 Q pmRA 0.8
Q pmDE 1.2 BTmag 9.565 E BTmag 0.023 VTmag 8.176
E VTmag 0.013 Prox 999 TYC T HIP 97350
CCDM AB RAdeg 296.78350278 DEdeg -8.15275806 EpRA 1990 1.80
EpDE 1990 1.66 E RAdeg 7.2 E DEdeg 8.5 Posflg P
Corr -0.4
SAO
SAO 143795 DelFlag RA1950 PmRA1950 0.0016
DE1950 PmDE1950 -0.019 Vmag 7.8 SpType K0
Double code Source 26 CatNum 6925 DM BD-08 5103
DMcomp BDsup HD 186847 M HD 0
GC RA1950rad 5.16804065 DE1950rad -0.14445136 PmRA2000 0.0018
PmDE2000 -0.019
Hipparcos
Catalog H HIP 97350 Proxy H RAhms 19 47 08.04
DEdms -08 09 09.9 Vmag 8.04 VarFlag R Vmag G
RAdeg 296.784 DEdeg -8.15275 AstroRef * Plx 6.25
CCDM 19471-0809 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 88 Rho 0.288 HD 186847 BD BD-08 5103
CD CP Dm number -08 5103 VIred 1.13
SpType K0 R SpType Coord arcsec 2000 194708.04-080909.9
Hipparcos 2
HIP 97350 Sn 55 So 3 Nc 2
RArad 5.179849291 DErad -0.1422924116 Plx 5.82 PmRA 1.68
PmDE -23.82 E RArad 1.02 E DErad 0.55 E Plx 1.08
E pmRA 1.11 E pmDE 0.57 Hpmag 8.2111 E Hpmag 0.0013
SHp 0.01 VA 0 BV 1.17 E BV 0.015
VI 1.13
CCDM
Ccdm 19471-0809 RComp Comp A Note1
Note2 Discov num DRAs 2.07 DDEs -10.1
R dRAs 56 Year Theta Rho
Obs 2 Vmag 8.5 Sp K0 PmNote *
PmRA 24 PmDE -19 Dm number -08 5103 Cat1 BD
Name2 143795 Cat2 SAO HD 186847 M HD
ADS BDS A12911 M ADS BDS N IDS IDS 19417S0824A
HIC 97350
 
 
19471-0809 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 194708.06-080910.0 Mag 9.24 Calc delta mag 0.5
Calc coord yes
CCDM
Ccdm 19471-0809 RComp Comp B Note1 *
Note2 Discov num A 108 DRAs DDEs
R dRAs Year 1958 Theta 054 Rho 0.2
Obs 22 Vmag 8.9 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A12911 M ADS BDS N N IDS IDS 19417S0824B
HIC 97350