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Doubles in session


Current system
18235-3844
I 1364
HD 168800


Nearby doubles
20' : 18222-3857
ALD 69

30' : 18245-3817
TDT 843

32' : 18243-3914
B 1357

45' : 18267-3821
RST2052

47' : 18231-3758
RST4009

50' : 18274-3827
RST2055

54' : 18271-3916
HDS2610

54' : 18262-3801
RST2049

61' : 18247-3746
B 1358

70' : 18251-3738
B 1360

71' : 18266-3744
BRT1778

86' : 18161-3847
RSS 481

86' : 18165-3817
RST2041

88' : 18162-3908
TDT 767

93' : 18215-3715
B 2445

101' : 18173-3956
WG 230

102' : 18209-4021
WG 231

104' : 18213-4024
WG 232

106' : 18253-3701
BRT1776

109' : 18271-4025
TDT 875

111' : 18264-3700
RST4011

113' : 18172-3719
RST3168

115' : 18197-3700
RST3172

117' : 18334-3844
DUN 222

120' : 18166-3717
WFC 284

122' : 18227-4045
CBL 169



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.

18235-3844 I 1364 (HD 168800)

 
 
18h 23m 27.12s -38° 44' 11.3" P.A. 176.00 sep 0.1 mag 9.30,9.50 Sp G8III
 
 
Coord 2000 18235-3844 Discov num I  1364 Comp Coord arcsec 2000 18 23 27.12 -38 44 11.3
Date first 1926 Date last 2019 Obs 9
Pa first 217 Pa last 176 P.A. Now (θ) 176°
Sep first 0.4 Sep last 0.101 Sep. Now (ρ) 0.101"
Mag pri 9.30 Mag sec 9.50 delta mag (ΔM) 0.2 Spectral class G8III (yellow)
Pri motion ra -008 Sec motion ra
Pri motion dec +009 Sec motion dec
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 168800 Constellation Corona Austrina SAO 210071 Tycho2 7901-02056-1
Gaia DR2 6727060903246748160 HD 168800
 
 
ORBITAL ELEMENTS
 
 
Period (P)500y Periastron (T)2123y Semi-major axis (a)0.321a
Eccentricity (e)0 Inclination (i)79.7° Longitude of periastron (ω)0°
Node (Ω)31.5° Notes ReferenceTok2021c
Equinox2000 Last observation2020 Grade5(1=Definitive, 9=Indet.)
label theta rho
2000 309.5 0.058
2001 313.4 0.059
2002 317.2 0.060
2003 320.9 0.061
2004 324.4 0.062
2005 327.8 0.064
2006 330.9 0.066
2007 333.9 0.068
2008 336.7 0.070
2009 339.4 0.072
2010 341.9 0.074
2011 344.2 0.077
2012 346.3 0.080
2013 348.4 0.082
2014 350.2 0.085
2015 352.0 0.088
2016 353.7 0.091
2017 355.2 0.094
2018 356.6 0.097
2019 358.0 0.100
2020 359.3 0.104
2021 0.5 0.107
2022 1.6 0.110
2023 2.7 0.113
2024 3.7 0.116
2025 4.6 0.120
2026 5.5 0.123
2027 6.4 0.126
2028 7.2 0.130
2029 8.0 0.133
2030 8.7 0.136


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


 
  


wds18235-3844a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 18235-3844 I 1364 (HD 168800) : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
Tok2021c orb - Tokovinin, A. 2021IAUDS.203....1S
Tok2021c Inf. Circ. 203, 1, 2021
 
 
DISCOVERER
 
 
idgroup discov author
1 I Innes, R.T.A.
5 I MNRAS 57, 533, 1897 (data also in I__1897b,
5 I I__1897c)
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18235-3844 I 1364 1989 7 261 0.1 9.30 9.50 G8III 182327.12-384411.3
18235-3844 I 1364 2018 8 174 0.1 9.30 9.50 G8III 182327.12-384411.3
18235-3844 I 1364 2019 9 176 0.1 9.30 9.50 G8III 182327.12-384411.3

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

 
 
WDS 18235-3844 I 1364 (HD 168800) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 18235-3844 I 1364 (HD 168800) : MEASURES
 
 
No records found.

 
 
WDS 18235-3844 (HD 168800) : VIRTUAL EYEPIECE
 
 

18235-3844 I 1364A mag 9.3 Sp G8III 18235-3844 I 1364B sep 0.1 P.A. 176.90 mag 9.5 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 18235-3844 (HD 168800) : ALADIN DSS IMAGE @ 18h 23m 27.12s -38° 44' 11.3"
 
 
 
 
WDS 18235-3844 I 1364 (HD 168800) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

18235-3844 I 1364 distance=0' 18222-3857 ALD 69 distance=20' 18245-3817 TDT 843 distance=30' 18243-3914 B 1357 distance=32' 18267-3821 RST2052 distance=45' 18231-3758 RST4009 distance=47' 18274-3827 RST2055 distance=50' 18271-3916 HDS2610 distance=54' 18262-3801 RST2049 distance=54' 18247-3746 B 1358 distance=61' 18251-3738 B 1360 distance=70' 18266-3744 BRT1778 distance=71' 18161-3847 RSS 481 distance=86' 18165-3817 RST2041 distance=86' 18162-3908 TDT 767 distance=88' 18215-3715 B 2445 distance=93' 18173-3956 WG 230 distance=101' 18209-4021 WG 231 distance=102' 18213-4024 WG 232 distance=104' 18253-3701 BRT1776 distance=106' 18271-4025 TDT 875 distance=109' 18264-3700 RST4011 distance=111' 18172-3719 RST3168 distance=113' 18197-3700 RST3172 distance=115' 18334-3844 DUN 222 distance=117' 18166-3717 WFC 284 distance=120' 18227-4045 CBL 169 distance=122' 18207-3647 B 1356 distance=123' 18142-3747 RST3163 distance=123' 18248-3642 POL 6 distance=123' 18222-4046 WG 233 distance=124' 18130-3910 I 1018 distance=125' 18307-4018 WG 234 distance=126' 18331-3752 BRT1781 distance=126' 18179-3654 B 2441 distance=129' 18142-3737 B 934AB distance=129' 18142-3737 B 934BC distance=129' 18164-4028 I 1020 distance=133' 18160-3703 B 1355 distance=135' 18131-3750 B 932 distance=135' 18167-4034 WG 229 distance=135' 18269-3635 BRT1779 distance=136' 18122-3921 HJ 5028BC distance=137' 18122-3921 BU 759AB distance=137' 18122-3921 HJ 5028AC distance=137' 18176-3646 BU 760AB distance=138' 18176-3646 BU 760AC distance=138' 18176-3646 BU 760AD distance=138' 18256-3628 OL 19 distance=140' 18325-4017 RST4015 distance=140' 18345-3753 JSP 779 distance=141' 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 18235-3844 I 1364 176 0.1
Show 18222-3857 ALD 69 82 2.4 20
Show 18245-3817 TDT 843 98 0.6 30
Show 18243-3914 B 1357 303 5.0 32
Show 18267-3821 RST2052 278 1.4 45
Show 18231-3758 RST4009 44 0.5 47
Show 18274-3827 RST2055 14 0.9 50
Show 18271-3916 HDS2610 110 7.0 54
Show 18262-3801 RST2049 165 2.2 54
Show 18247-3746 B 1358 311 1.1 61
Show 18251-3738 B 1360 279 2.8 70
Show 18266-3744 BRT1778 123 3.1 71
Show 18161-3847 RSS 481 196 9.8 86
Show 18165-3817 RST2041 198 1.7 86
Show 18162-3908 TDT 767 3 2.4 88
Show 18215-3715 B 2445 248 6.3 93
Show 18173-3956 WG 230 88 2.4 101
Show 18209-4021 WG 231 231 9.3 102
Show 18213-4024 WG 232 206 6.0 104
Show 18253-3701 BRT1776 175 3.3 106
Show 18271-4025 TDT 875 235 2.2 109
Show 18264-3700 RST4011 130 0.6 111
Show 18172-3719 RST3168 198 1.8 113
Show 18197-3700 RST3172 336 3.9 115
Show 18334-3844 DUN 222 359 20.5 117
Show 18166-3717 WFC 284 118 10.7 120
Show 18227-4045 CBL 169 160 12.7 122
Show 18207-3647 B 1356 228 2.5 123
Show 18142-3747 RST3163 19 1.2 123
Show 18248-3642 POL 6 226 2.7 123
Show 18222-4046 WG 233 6 11.5 124
Show 18130-3910 I 1018 336 1.1 125
Show 18307-4018 WG 234 113 6.9 126
Show 18331-3752 BRT1781 192 4.2 126
Show 18179-3654 B 2441 179 2.9 129
Show 18142-3737 B 934 AB 29 14.8 129
Show 18142-3737 B 934 BC 187 2.5 129
Show 18164-4028 I 1020 273 0.5 133
Show 18160-3703 B 1355 295 0.2 135
Show 18131-3750 B 932 258 4.6 135
Show 18167-4034 WG 229 206 6.3 135
Show 18269-3635 BRT1779 28 6.7 136
Show 18122-3921 HJ 5028 BC 151 13.0 137
Show 18122-3921 BU 759 AB 124 2.0 137
Show 18122-3921 HJ 5028 AC 148 14.9 137
Show 18176-3646 BU 760 AB 110 3.5 138
Show 18176-3646 BU 760 AC 320 28.3 138
Show 18176-3646 BU 760 AD 318 93.8 138
Show 18256-3628 OL 19 261 4.1 140
Show 18325-4017 RST4015 34 3.3 140
Show 18345-3753 JSP 779 220 0.7 141

 
 
WDS 18235-3844 : COMPONENTS
 
 
  A
B pa=176.9°
sep=0.10"
 
 
18235-3844 A
 
 
Componente originario normalizzato AB Name HD 168800 Coord arcsec 2000 182327.12-384411.3 Mag 9.3
Spectral class G8III (yellow) PmRA -8.00 PmDE 9.0 SAO 210071
Tycho2 7901-02056-1 HD 168800 DM CD-3812745
Tycho2
Tycho2 7901-02056-1 Pflag RAmdeg 275.86303502 DEmdeg -38.73649432
PmRA -0.1 PmDE 5.7 E RAmdeg 9 E DEmdeg 14
E pmRA 1.3 E pmDE 1.3 EpRAm 1990.49 EpDEm 1988.28
Num 8 Q RAmdeg 1.4 Q DEmdeg 0.6 Q pmRA 1.5
Q pmDE 0.7 BTmag 9.935 E BTmag 0.028 VTmag 8.770
E VTmag 0.016 Prox 461 TYC T HIP
CCDM RAdeg 275.86303500 DEdeg -38.73650833 EpRA 1990 1.84
EpDE 1990 1.73 E RAdeg 8.7 E DEdeg 14.7 Posflg
Corr 0.1
SAO
SAO 210071 DelFlag RA1950 PmRA1950 -0.0012
DE1950 PmDE1950 -0.015 Vmag 8.6 SpType K0
Double code Source 41 CatNum 9428 DM CD-3812745
DMcomp BDsup HD 168800 M HD 0
GC RA1950rad 4.79964845 DE1950rad -0.67654289 PmRA2000 -0.0012
PmDE2000 -0.016
 
 
18235-3844 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 182327.12-384411.4 Mag 9.5 Calc delta mag 0.2
Calc coord yes