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Doubles in session


Current system
19431-0818
STFA 45 AB
HD 186158


Nearby doubles
26' : 19447-0825
AOT 78

40' : 19419-0854
TDT1651

44' : 19438-0901
AOT 77

45' : 19453-0849
AOT 79

47' : 19436-0904
HO 579AB

49' : 19401-0759
YSC 161

53' : 19408-0738
GWP2881

57' : 19466-0841
TDT1731

62' : 19460-0735
HDS2808

62' : 19471-0809
A 108

70' : 19384-0819
HJ 892

79' : 19432-0937
AOT 76

80' : 19408-0707
J 2553

82' : 19416-0659
J 1856

82' : 19436-0656
LDS5884

88' : 19438-0945
RST4640

100' : 19494-0746
RST4642

104' : 19447-0958
BRT1952

104' : 19463-0950
BRT 553

106' : 19463-0645
UC 4022

110' : 19393-0644
GWP2875

111' : 19428-0628
HDS2796

113' : 19498-0730
UC 4033

115' : 19448-0627
TDT1702

118' : 19422-1015
RST4639

123' : 19510-0749
UC 4039



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.

19431-0818 STFA 45 AB (HD 186158)

 
 
19h 43m 03.26s -08° 18' 26.2" P.A. 145.00 sep 96.3 mag 7.11,7.56 Sp F4V+F5V dist. 72.2 pc (235.52 l.y.)
 
 
Coord 2000 19431-0818 Discov num STFA 45 Comp AB Coord arcsec 2000 19 43 03.26 -08 18 26.2
Date first 1823 Date last 2018 Obs 43
Pa first 147 Pa last 145.4 P.A. Now (θ) 145.4°
Sep first 97.1 Sep last 96.268 Sep. Now (ρ) 96.268"
Mag pri 7.11 Mag sec 7.56 delta mag (ΔM) 0.45 Spectral class F4V+F5V (yellow-white/yellow-white)
Pri motion ra +026 Sec motion ra +017
Pri motion dec -056 Sec motion dec -057
Notes N V (See Notes, Proper motion indicates physical)
rPM=0.147 (< 0.3, Physical double)
This double is physical.
 
 
19431-0818 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show HD 186158 143722 19 43 03 -08 18 26 STFA 45 AB 2018 43 145 96.3 7.11 7.56 0.45 <===
Show 143724 19 43 07 -08 19 46 HDS 2799 Ba,Bb 2021 4 232 0.5 7.69 10.60 2.91
Triple system
2 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 186158 Constellation Aquila SAO 143722 HIP 97016
Tycho2 5724-02578-1 Gaia DR2 4194768049747165568 HD 186158 GC 27279
BD BD-08 5078 Distance 72.2 Distance ly 235.52
 
 
SUSPECTED ORBITAL ELEMENTS
 
 
Identifier19431-0818
coord_arcsec_2000194303.27-081826.6
Period (P)898.6192d (2.46y)± 38.1478 Periastron (T)48482.9609d (1991.618y)± 270.4615 Semi-major axis (a)11.58m± 1.06
Eccentricity (e)0.1991± 0.1919 Inclination (i)142.17°± 14.77 Longitude of periastron (ω)271.87°± 123.84
Node (Ω)128.24°± 21.85 Notesn ReferenceHIP1997d
Equinox Last observation1991 Grade9(1=Definitive, 9=Indet.)
label theta rho
2000-01-01 64.5 0.011
2001-01-01 306.7 0.011
2002-01-01 117.2 0.011
2003-01-01 358.2 0.012
2004-01-01 193.8 0.008
2005-01-01 54.7 0.011
2006-01-01 296.4 0.011
2007-01-01 108.2 0.012
2008-01-01 349.2 0.012
2009-01-01 174.8 0.008
2010-01-01 44.8 0.011
2011-01-01 284.6 0.010
2012-01-01 99.4 0.012
2013-01-01 340.5 0.012
2014-01-01 159.0 0.009
2015-01-01 34.8 0.011
2016-01-01 270.7 0.009
2017-01-01 90.5 0.012
2018-01-01 331.9 0.012
2019-01-01 145.9 0.010
2020-01-01 24.8 0.011
2021-01-01 253.7 0.008
2022-01-01 81.5 0.011
2023-01-01 323.2 0.012
2024-01-01 134.7 0.011
2025-01-01 15.1 0.011
2026-01-01 233.4 0.007
2027-01-01 72.2 0.011
2028-01-01 314.2 0.011
2029-01-01 124.7 0.011
2030-01-01 5.6 0.011


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


 
  


wds19431-0818r.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 19431-0818 STFA 45 AB (HD 186158) : NOTES
 
 
discov_num notes refcode
STFA 45 B is BD-08@5079.
AB: SHY 757. Bayesian analysis by Shaya & Olling (2011) indicates very Shy2011
high (near 100%) probability pair is physical.
GC 27279 Hipparcos astrometric solution assumed circular orbit (e = omega = 0) HIP1997d
 
 
REFERENCES
 
 
refcode metd author reference
HIP1997d orb - Hipparcos 1997yCat.1239....0E
HIP1997d Hipparcos Catalog, ESA SP-1200, 1997
HIP1997d (DMSA/O Orbital Solutions)
Shy2011 - Shaya, E.J. & Olling, R. 2011ApJS..192....2S
Shy2011 ApJS 192, 2, 2011
Shy2011 (Statistical analysis of probability that wide Hipparcos pairs are physical. Pairs
Shy2011 added to WDS only if probability 90% or greater.)
 
 
DISCOVERER
 
 
idgroup discov author
1 HDS Hipparcos Double Star (from additional DD list)
1 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
19431-0818 STFA 45 AB 2001 35 147 97.5 7.11 7.56 F4V F5V N D 194303.26-081826.2
19431-0818 STFA 45 AB 2011 37 147 97.8 7.11 7.56 F4V F5V NVD 194303.26-081826.2
19431-0818 STFA 45 AB 2018 39 146 97.0 7.11 7.56 F4V+F5V NV 194303.26-081826.2

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

 
 
WDS 19431-0818 STFA 45 AB (HD 186158) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 19431-0818 STFA 45 AB (HD 186158) : MEASURES
 
 
No records found.

 
 
WDS 19431-0818 (HD 186158) : VIRTUAL EYEPIECE
 
 

19431-0818 STFA 45A mag 7.11 Sp F4V 19431-0818 HDS2799B sep 96.7 P.A. 145.80 mag 7.69 Sp F8 19431-0818 HDS2799Bb sep 96.7 P.A. 146.10 mag 10.6 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 19431-0818 (HD 186158) : ALADIN DSS IMAGE @ 19h 43m 03.26s -08° 18' 26.2"
 
 
 
 
WDS 19431-0818 STFA 45 AB (HD 186158) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

19431-0818 STFA 45AB distance=0' 19431-0818 HDS2799Ba,Bb distance=2' 19447-0825 AOT 78 distance=26' 19419-0854 TDT1651 distance=40' 19438-0901 AOT 77 distance=44' 19453-0849 AOT 79 distance=45' 19436-0904 HO 579AB distance=47' 19436-0904 HO 579AC distance=47' 19401-0759 YSC 161 distance=49' 19408-0738 GWP2881 distance=53' 19466-0841 TDT1731 distance=57' 19460-0735 HDS2808 distance=62' 19471-0809 A 108 distance=62' 19384-0819 HJ 892 distance=70' 19432-0937 AOT 76 distance=79' 19408-0707 J 2553 distance=80' 19416-0659 J 1856 distance=82' 19436-0656 LDS5884 distance=82' 19438-0945 RST4640 distance=88' 19494-0746 RST4642 distance=100' 19447-0958 BRT1952 distance=104' 19463-0950 BRT 553 distance=104' 19463-0645 UC 4022 distance=106' 19393-0644 GWP2875 distance=110' 19428-0628 HDS2796 distance=111' 19498-0730 UC 4033 distance=113' 19448-0627 TDT1702 distance=115' 19422-1015 RST4639 distance=118' 19510-0749 UC 4039 distance=123' 19431-0612 GWP2884 distance=127' 19380-1002 DAM 356 distance=128' 19377-0958 LV 21AB distance=128' 19377-0958 LV 21BC distance=129' 19387-1009 STF2545AB distance=129' 19387-1009 STF2545AC distance=129' 19459-0615 GWP2890 distance=131' 19350-0725 KPP2771 distance=131' 19342-0835 RST4633 distance=133' 19521-0802 GWP2903 distance=136' 19389-1020 STF2547AB distance=137' 19389-1020 STF2547AC distance=137' 19393-1025 TDT1607 distance=138' 19395-1028 GWP2876 distance=140' 19430-1040 GWP2883 distance=143' 19506-0947 KPP 444 distance=144' 19502-1000 RST4643AB distance=147' 19502-1000 GII 286Aa,Ab distance=147' 19371-0621 J 2272 distance=148' 19460-1039 HU 76 distance=148' 19439-0547 BWL 52AB distance=153' 19439-0547 BWL 52AC distance=153' 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 19431-0818 STFA 45 AB 145 96.3
Show 19431-0818 HDS2799 Ba,Bb 232 0.5 2
Show 19447-0825 AOT 78 256 17.2 26
Show 19419-0854 TDT1651 187 0.6 40
Show 19438-0901 AOT 77 233 13.8 44
Show 19453-0849 AOT 79 348 15.5 45
Show 19436-0904 HO 579 AB 305 2.7 47
Show 19436-0904 HO 579 AC 153 63.8 47
Show 19401-0759 YSC 161 253 0.1 49
Show 19408-0738 GWP2881 276 27.9 53
Show 19466-0841 TDT1731 52 0.7 57
Show 19460-0735 HDS2808 175 0.1 62
Show 19471-0809 A 108 107 0.3 62
Show 19384-0819 HJ 892 14 22.2 70
Show 19432-0937 AOT 76 110 15.4 79
Show 19408-0707 J 2553 265 3.9 80
Show 19416-0659 J 1856 86 8.5 82
Show 19436-0656 LDS5884 52 10.3 82
Show 19438-0945 RST4640 305 0.6 88
Show 19494-0746 RST4642 260 0.4 100
Show 19447-0958 BRT1952 356 3.6 104
Show 19463-0950 BRT 553 91 19.5 104
Show 19463-0645 UC 4022 29 48.6 106
Show 19393-0644 GWP2875 267 12.0 110
Show 19428-0628 HDS2796 178 2.9 111
Show 19498-0730 UC 4033 6 44.5 113
Show 19448-0627 TDT1702 258 0.5 115
Show 19422-1015 RST4639 20 0.7 118
Show 19510-0749 UC 4039 169 10.3 123
Show 19431-0612 GWP2884 113 298.8 127
Show 19380-1002 DAM 356 204 7.5 128
Show 19377-0958 LV 21 AB 284 84.1 128
Show 19377-0958 LV 21 BC 284 4.2 129
Show 19387-1009 STF2545 AB 326 3.7 129
Show 19387-1009 STF2545 AC 163 25.1 129
Show 19459-0615 GWP2890 153 254.9 131
Show 19350-0725 KPP2771 285 3.2 131
Show 19342-0835 RST4633 26 2.6 133
Show 19521-0802 GWP2903 49 119.6 136
Show 19389-1020 STF2547 AB 330 20.8 137
Show 19389-1020 STF2547 AC 141 49.6 137
Show 19393-1025 TDT1607 159 0.9 138
Show 19395-1028 GWP2876 250 200.1 140
Show 19430-1040 GWP2883 175 20.7 143
Show 19506-0947 KPP 444 223 3.6 144
Show 19502-1000 RST4643 AB 264 1.5 147
Show 19502-1000 GII 286 Aa,Ab 126 0.1 147
Show 19371-0621 J 2272 336 1.8 148
Show 19460-1039 HU 76 264 0.9 148
Show 19439-0547 BWL 52 AB 110 4.2 153
Show 19439-0547 BWL 52 AC 193 5.3 153

 
 
WDS 19431-0818 : COMPONENTS
 
 
  A B
B pa=145.8°
sep=96.70"
 
Bb pa=146.1°
sep=96.74"
pa=231.3°
sep=0.54"
 
 
19431-0818 A
 
 
Name HD 186158 Coord arcsec 2000 194303.26-081826.2 Mag 7.11 Spectral class F4V (yellow-white)
PmRA 26.00 PmDE -56.0 SAO 143722 HIP 97016
Tycho2 5724-02578-1 HD 186158 GC 27279 BD BD-08 5078
Tycho2
Tycho2 5724-02578-1 Pflag RAmdeg 295.76366698 DEmdeg -8.30739469
PmRA 25.4 PmDE -53.5 E RAmdeg 4 E DEmdeg 5
E pmRA 1.1 E pmDE 1.0 EpRAm 1991.59 EpDEm 1991.13
Num 15 Q RAmdeg 0.8 Q DEmdeg 1.2 Q pmRA 0.7
Q pmDE 1.3 BTmag 7.525 E BTmag 0.015 VTmag 7.108
E VTmag 0.010 Prox 967 TYC T HIP 97016
CCDM RAdeg 295.76360917 DEdeg -8.30727194 EpRA 1990 1.88
EpDE 1990 1.74 E RAdeg 3.7 E DEdeg 4.6 Posflg
Corr -0.2
SAO
SAO 143722 DelFlag RA1950 PmRA1950 0.0014
DE1950 PmDE1950 -0.047 Vmag 7 SpType F5
Double code Source 70 CatNum 27279 DM BD-08 5078
DMcomp BDsup HD 186158 M HD 0
GC 27279 RA1950rad 5.15021261 DE1950rad -0.14706291 PmRA2000 0.0016
PmDE2000 -0.047
Hipparcos
Catalog H HIP 97016 Proxy RAhms 19 43 03.26
DEdms -08 18 26.2 Vmag 7.07 VarFlag R Vmag H
RAdeg 295.764 DEdeg -8.30727 AstroRef + Plx 16.94
CCDM 19431-0819 N CCDM I Nsys 2 Ncomp 1
MultFlag O Source Qual M HIP
Theta Rho HD 186158 BD BD-08 5078
CD CP Dm number -08 5078 VIred 0.47
SpType F5 R SpType Coord arcsec 2000 194303.26-081826.2
Hipparcos 2
HIP 97016 Sn 75 So 4 Nc 1
RArad 5.162048713 DErad -0.1449891518 Plx 13.85 PmRA 26.4
PmDE -56.31 E RArad 0.57 E DErad 0.3 E Plx 0.63
E pmRA 0.68 E pmDE 0.34 Hpmag 7.1658 E Hpmag 0.0008
SHp 0.008 VA 0 BV 0.405 E BV 0.004
VI 0.47
 
 
19431-0818 B
 
 
Coord arcsec 2000 194306.92-081946.2 Coord calc 194306.90-081945.4 Mag 7.69 Mag composta 7.56
Spectral class F8 (yellow-white) PmRA 17.00 PmDE -57.0 SAO 143724
HIP 97022 Tycho2 5724-00688-1 HD 186159 BD BD-08 5079
Calc delta mag 0.58
Tycho2
Tycho2 5724-00688-1 Pflag RAmdeg 295.77890594 DEmdeg -8.32962934
PmRA 23.6 PmDE -54.8 E RAmdeg 4 E DEmdeg 5
E pmRA 1.3 E pmDE 1.3 EpRAm 1991.56 EpDEm 1991.32
Num 11 Q RAmdeg 0.8 Q DEmdeg 1.4 Q pmRA 0.8
Q pmDE 1.5 BTmag 8.086 E BTmag 0.015 VTmag 7.562
E VTmag 0.011 Prox 967 TYC T HIP 97022
CCDM AC RAdeg 295.77885194 DEdeg -8.32950444 EpRA 1990 1.89
EpDE 1990 1.77 E RAdeg 4.1 E DEdeg 5.4 Posflg P
Corr -0.3
SAO
SAO 143724 DelFlag RA1950 PmRA1950 0.0021
DE1950 PmDE1950 -0.059 Vmag 7.7 SpType F8
Double code Source 26 CatNum 6894 DM BD-08 5079
DMcomp BDsup HD 186159 M HD 0
GC RA1950rad 5.15048022 DE1950rad -0.14745429 PmRA2000 0.0023
PmDE2000 -0.059
Hipparcos
Catalog H HIP 97022 Proxy H RAhms 19 43 06.92
DEdms -08 19 46.2 Vmag 7.51 VarFlag R Vmag G
RAdeg 295.779 DEdeg -8.3295 AstroRef A Plx 16.71
CCDM 19431-0819 N CCDM I Nsys 2 Ncomp 2
MultFlag C Source Qual A M HIP AC
Theta 295 Rho 0.318 HD 186159 BD BD-08 5079
CD CP Dm number -08 5079 VIred 0.57
SpType F8 R SpType Coord arcsec 2000 194306.92-081946.2
Hipparcos 2
HIP 97022 Sn 15 So 3 Nc 2
RArad 5.1623147845 DErad -0.1453771906 Plx 14.41 PmRA 19.36
PmDE -56.74 E RArad 0.65 E DErad 0.34 E Plx 0.72
E pmRA 0.75 E pmDE 0.38 Hpmag 7.6189 E Hpmag 0.001
SHp 0.009 VA 0 BV 0.501 E BV 0.012
VI 0.57
 
 
19431-0818 Bb
 
 
Coord arcsec 2000 194306.89-081946.5 Mag 10.6 Calc delta mag 3.49 Calc coord yes