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Current system
20012-3835
HDO 294
HD 189386


Nearby doubles
8' : 20006-3836
KPP 450

22' : 20020-3816
TDT1925

30' : 19596-3813
RST2126

55' : 20003-3742
HDO 293

61' : 20002-3736
TDT1908

62' : 19562-3820
SEE 398

62' : 20064-3829
RST2132

62' : 20022-3936
UC 4068

63' : 20008-3938
WG 249

67' : 20027-3939
RST2131

74' : 20013-3722
SKF2084

75' : 20057-3743
HDS2865

92' : 20090-3843
SEE 407

98' : 20081-3929
RST2134

103' : 19581-4012
CRU9010

109' : 20079-3951
CRU9011AB

109' : 20079-3952
UC 4093

114' : 20108-3845
YMG 90

117' : 19597-4030
HJ 5159

117' : 20118-3825
TOK 904

118' : 19587-4029
RST2125

119' : 19578-3644
JSP 808

121' : 20098-3732
B 2883

122' : 19580-4031
SKF1095

123' : 20035-3636
B 463AB

128' : 20112-3926
HDS2878



Selections
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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.

20012-3835 HDO 294 (HD 189386)

 
 
20h 01m 12.74s -38° 35' 12.7" P.A. 33.00 sep 1.3 mag 8.08,9.11 Sp F3V dist. 68.49 pc (223.41 l.y.)
 
 
Coord 2000 20012-3835 Discov num HDO 294 Comp Coord arcsec 2000 20 01 12.74 -38 35 12.7
Date first 1897 Date last 2019 Obs 63
Pa first 120 Pa last 33.2 P.A. Now (θ) 33.2°
Sep first 1.5 Sep last 1.26 Sep. Now (ρ) 1.26"
Mag pri 8.08 Mag sec 9.11 delta mag (ΔM) 1.03 Spectral class F3V (yellow-white)
Pri motion ra +018 Sec motion ra +018
Pri motion dec -070 Sec motion dec -070
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 189386 Constellation Sagittarius SAO 211734 HIP 98556
Tycho2 7947-00530-1 Gaia DR2 6690907208575405056 HD 189386 GC 27717
CD CD-3813809 CP CP-38 7919 Distance 68.49 Distance ly 223.41
 
 
ORBITAL ELEMENTS
 
 
Period (P)4484.5y Periastron (T)1922.73y Semi-major axis (a)4.916a
Eccentricity (e)0.9474 Inclination (i)40.86° Longitude of periastron (ω)137.62°
Node (Ω)116.65° Notesn ReferenceDom1978
Equinox1900 Last observation1974 Grade5(1=Definitive, 9=Indet.)
label theta rho
2000 30.7 1.173
2001 31.0 1.184
2002 31.4 1.195
2003 31.7 1.206
2004 32.0 1.217
2005 32.3 1.228
2006 32.6 1.239
2007 32.9 1.250
2008 33.2 1.261
2009 33.5 1.271
2010 33.8 1.282
2011 34.1 1.293
2012 34.4 1.304
2013 34.7 1.314
2014 34.9 1.325
2015 35.2 1.336
2016 35.5 1.346
2017 35.7 1.357
2018 36.0 1.367
2019 36.2 1.378
2020 36.5 1.388
2021 36.7 1.399
2022 36.9 1.409
2023 37.2 1.419
2024 37.4 1.430
2025 37.6 1.440
2026 37.9 1.450
2027 38.1 1.460
2028 38.3 1.471
2029 38.5 1.481
2030 38.7 1.491


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


 
  


wds20012-3835a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 20012-3835 HDO 294 (HD 189386) : NOTES
 
 
discov_num notes refcode
HDO 294 A premature orbit has been computed.
 
 
REFERENCES
 
 
refcode metd author reference
Dom1978 orb - Dommanget, J. 1978BAORB...9...47D
Dom1978 Bull. R. Astron. Obs. Belgium 9, 47-59, 1978
 
 
DISCOVERER
 
 
idgroup discov author
1 HDO Harvard Obs.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20012-3835 HDO 294 2002 52 30 1.2 8.08 9.11 F3V NOD 200112.74-383512.7
20012-3835 HDO 294 2008 53 30 1.2 8.08 9.11 F3V NOD 200112.74-383512.7
20012-3835 HDO 294 2010 54 29 1.2 8.08 9.11 F3V NOD 200112.74-383512.7
20012-3835 HDO 294 2013 57 31 1.2 8.08 9.11 F3V NO 200112.74-383512.7
20012-3835 HDO 294 2016 60 35 1.3 8.08 9.11 F3V NO 200112.74-383512.7
20012-3835 HDO 294 2017 61 34 1.3 8.08 9.11 F3V NO 200112.74-383512.7
20012-3835 HDO 294 2019 62 33 1.3 8.08 9.11 F3V NO 200112.74-383512.7

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

 
 
WDS 20012-3835 HDO 294 (HD 189386) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 20012-3835 HDO 294 (HD 189386) : MEASURES
 
 
No records found.

 
 
WDS 20012-3835 (HD 189386) : VIRTUAL EYEPIECE
 
 

20012-3835 HDO 294A mag 8.08 Sp F3V 20012-3835 HDO 294B sep 1.2 P.A. 27.10 mag 9.11 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 20012-3835 (HD 189386) : ALADIN DSS IMAGE @ 20h 01m 12.74s -38° 35' 12.7"
 
 
 
 
WDS 20012-3835 HDO 294 (HD 189386) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

20012-3835 HDO 294 distance=0' 20006-3836 KPP 450 distance=8' 20020-3816 TDT1925 distance=22' 19596-3813 RST2126 distance=30' 20003-3742 HDO 293 distance=55' 20002-3736 TDT1908 distance=61' 19562-3820 SEE 398 distance=62' 20064-3829 RST2132 distance=62' 20022-3936 UC 4068 distance=62' 20008-3938 WG 249 distance=63' 20027-3939 RST2131 distance=67' 20013-3722 SKF2084 distance=74' 20057-3743 HDS2865 distance=75' 20090-3843 SEE 407 distance=92' 20081-3929 RST2134 distance=98' 19581-4012 CRU9010 distance=103' 20079-3951 CRU9011AB distance=109' 20079-3951 CRU9011AC distance=109' 20079-3952 UC 4093 distance=109' 20108-3845 YMG 90 distance=114' 19597-4030 HJ 5159 distance=117' 20118-3825 TOK 904 distance=117' 19587-4029 RST2125 distance=118' 19578-3644 JSP 808 distance=119' 20098-3732 B 2883 distance=121' 19580-4031 SKF1095 distance=122' 20035-3636 B 463AB distance=123' 20035-3636 SEE 402AC distance=123' 20112-3926 HDS2878 distance=128' 19572-4035 RST2124 distance=129' 19511-3926 TDT1801 distance=129' 19510-3925 RST2121 distance=129' 20055-4034 UC 4080 distance=129' 19517-3730 B 2055 distance=131' 20123-3826 SKF2085 distance=131' 19507-3923 KPP1759 distance=132' 20068-4031 WG 250 distance=133' 19509-3936 UC 4037AB distance=135' 20069-3633 JSP 809 distance=140' 19569-3623 B 456AB distance=143' 19569-3623 SEE 399AB,C distance=143' 20056-4048 UC 4083 distance=143' 19491-3904 UC 4029 distance=145' 20134-3821 B 472 distance=145' 20114-3715 B 470 distance=146' 20134-3927 TDT2102 distance=151' 19574-4100 I 1408 distance=152' 20123-3956 WG 251 distance=152' 19543-4049 SKF1160AB distance=156' 19512-3654 HJ 5151 distance=157' 19516-4025 KPP3109 distance=157' 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 20012-3835 HDO 294 33 1.3
Show 20006-3836 KPP 450 104 3.7 8
Show 20020-3816 TDT1925 66 0.5 22
Show 19596-3813 RST2126 141 2.0 30
Show 20003-3742 HDO 293 210 23.6 55
Show 20002-3736 TDT1908 277 2.4 61
Show 19562-3820 SEE 398 305 12.2 62
Show 20064-3829 RST2132 119 0.4 62
Show 20022-3936 UC 4068 138 34.2 62
Show 20008-3938 WG 249 125 13.4 63
Show 20027-3939 RST2131 301 0.5 67
Show 20013-3722 SKF2084 12 17.4 74
Show 20057-3743 HDS2865 185 0.1 75
Show 20090-3843 SEE 407 259 3.3 92
Show 20081-3929 RST2134 50 0.3 98
Show 19581-4012 CRU9010 46 13.1 103
Show 20079-3951 CRU9011 AB 185 82.5 109
Show 20079-3951 CRU9011 AC 96 80.1 109
Show 20079-3952 UC 4093 108 23.5 109
Show 20108-3845 YMG 90 343 1.4 114
Show 19597-4030 HJ 5159 30 27.1 117
Show 20118-3825 TOK 904 315 4.2 117
Show 19587-4029 RST2125 91 0.6 118
Show 19578-3644 JSP 808 15 0.5 119
Show 20098-3732 B 2883 130 8.3 121
Show 19580-4031 SKF1095 104 48.9 122
Show 20035-3636 B 463 AB 200 1.3 123
Show 20035-3636 SEE 402 AC 312 24.6 123
Show 20112-3926 HDS2878 37 0.3 128
Show 19572-4035 RST2124 74 3.0 129
Show 19511-3926 TDT1801 253 0.5 129
Show 19510-3925 RST2121 249 1.2 129
Show 20055-4034 UC 4080 89 18.9 129
Show 19517-3730 B 2055 126 0.6 131
Show 20123-3826 SKF2085 2 18.8 131
Show 19507-3923 KPP1759 166 13.6 132
Show 20068-4031 WG 250 330 16.7 133
Show 19509-3936 UC 4037 AB 179 100.4 135
Show 20069-3633 JSP 809 74 0.4 140
Show 19569-3623 B 456 AB 50 0.7 143
Show 19569-3623 SEE 399 AB,C 31 5.0 143
Show 20056-4048 UC 4083 34 47.0 143
Show 19491-3904 UC 4029 61 17.7 145
Show 20134-3821 B 472 24 1.0 145
Show 20114-3715 B 470 253 3.2 146
Show 20134-3927 TDT2102 269 0.5 151
Show 19574-4100 I 1408 94 0.4 152
Show 20123-3956 WG 251 306 9.6 152
Show 19543-4049 SKF1160 AB 225 140.4 156
Show 19512-3654 HJ 5151 357 7.7 157
Show 19516-4025 KPP3109 167 3.0 157

 
 
WDS 20012-3835 : COMPONENTS
 
 
  A
B pa=27.1°
sep=1.18"
 
 
20012-3835 A
 
 
Componente originario normalizzato AB Name HD 189386 Coord arcsec 2000 200112.74-383512.7 Mag 8.08
Spectral class F3V (yellow-white) PmRA 18.00 PmDE -70.0 SAO 211734
HIP 98556 Tycho2 7947-00530-1 HD 189386 GC 27717
CD CD-3813809 CP CP-38 7919
Tycho2
Tycho2 7947-00530-1 Pflag P RAmdeg 300.30306789 DEmdeg -38.58686417
PmRA 17.9 PmDE -69.9 E RAmdeg 5 E DEmdeg 7
E pmRA 1.8 E pmDE 1.7 EpRAm 1991.70 EpDEm 1991.33
Num 7 Q RAmdeg 1.8 Q DEmdeg 1.4 Q pmRA 1.8
Q pmDE 1.5 BTmag 8.469 E BTmag 0.016 VTmag 8.078
E VTmag 0.012 Prox 10 TYC T HIP 98556
CCDM A RAdeg 300.30299278 DEdeg -38.58674139 EpRA 1990 1.82
EpDE 1990 1.58 E RAdeg 4.9 E DEdeg 6.8 Posflg D
Corr 0.0
SAO
SAO 211734 DelFlag RA1950 PmRA1950 0.0037
DE1950 PmDE1950 -0.073 Vmag 7.6 SpType F2
Double code Source 70 CatNum 27717 DM CD-3813809
DMcomp BDsup HD 189386 M HD 0
GC 27717 RA1950rad 5.22672333 DE1950rad -0.67587198 PmRA2000 0.0038
PmDE2000 -0.075
Hipparcos
Catalog H HIP 98556 Proxy H RAhms 20 01 12.72
DEdms -38 35 12.2 Vmag 7.7 VarFlag R Vmag G
RAdeg 300.303 DEdeg -38.5867 AstroRef A Plx 13.07
CCDM 20012-3835 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 24 Rho 1.053 HD 189386 BD
CD CD-3813809 CP CP-38 7919 Dm number -3813809 VIred 0.48
SpType F3V R SpType Coord arcsec 2000 200112.72-383512.2
Hipparcos 2
HIP 98556 Sn 15 So 3 Nc 2
RArad 5.241275972 DErad -0.6734655409 Plx 14.6 PmRA 18.01
PmDE -68.01 E RArad 0.9 E DErad 0.48 E Plx 0.97
E pmRA 1.31 E pmDE 0.8 Hpmag 7.7868 E Hpmag 0.0012
SHp 0.009 VA 0 BV 0.413 E BV 0.022
VI 0.48
CCDM
Ccdm 20012-3835 RComp Comp A Note1
Note2 Discov num DRAs 0.72 DDEs -13.1
R dRAs 10 Year Theta Rho
Obs 2 Vmag 8.1 Sp F2 PmNote *
PmRA 21 PmDE -75 Dm number -3813809 Cat1 CD
Name2 211734 Cat2 SAO HD 189386 M HD
ADS BDS M ADS BDS N IDS IDS 19545S3852A
HIC 98556
 
 
20012-3835 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 200112.79-383511.6 Mag 9.11 PmRA 18.00
PmDE -70.0 Tycho2 7947-00530-2 Calc delta mag 1.03 Calc coord yes
Tycho2
Tycho2 7947-00530-2 Pflag P RAmdeg 300.30306789 DEmdeg -38.58686417
PmRA 17.9 PmDE -69.9 E RAmdeg 5 E DEmdeg 7
E pmRA 1.8 E pmDE 1.7 EpRAm 1991.70 EpDEm 1991.33
Num 7 Q RAmdeg 1.8 Q DEmdeg 1.4 Q pmRA 1.8
Q pmDE 1.5 BTmag 9.749 E BTmag 0.024 VTmag 9.111
E VTmag 0.019 Prox 10 TYC HIP 98556
CCDM B RAdeg 300.30313861 DEdeg -38.58648083 EpRA 1990 1.82
EpDE 1990 1.58 E RAdeg 9.2 E DEdeg 14.3 Posflg D
Corr 0.0
CCDM
Ccdm 20012-3835 RComp Comp B Note1 *
Note2 Discov num HDO 294 DRAs DDEs
R dRAs Year 1901 Theta Rho
Obs 99 Vmag 8.9 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS M ADS BDS N IDS IDS 19545S3852B
HIC 98556