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Doubles in session


Current system
18389-2103
WSI 90 AB


Nearby doubles
9' : 18395-2101
RST5121AB

10' : 18385-2110
B 1888

11' : 18387-2114
ARA1551

16' : 18378-2103
ARA1549

18' : 18398-2052
OCC1078

25' : 18379-2124
OCC 33

27' : 18393-2038
ARA1156

27' : 18406-2115
ARA1552

32' : 18405-2040
OCC1079

34' : 18375-2130
ARA1548

36' : 18372-2039
DON 914

38' : 18406-2034
OCC1080

39' : 18416-2108
KPP 422

39' : 18391-2025
ARA1155

43' : 18365-2128
ARA1547

44' : 18386-2020
DON 917

45' : 18407-2139
RST5122

47' : 18386-2149
J 1633AB

51' : 18354-2118
ARA1544

54' : 18406-2016
ARA1157

54' : 18381-2156
ARA1895

55' : 18367-2019
HO 567

59' : 18360-2146
ARA1545

60' : 18431-2051
ARA1159

65' : 18352-2140
HU 246

65' : 18361-2154
ARA1546



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.

18389-2103 WSI 90 AB

 
 
18h 38m 53.40s -21° 03' 06.7" P.A. 138.00 sep 0.0 mag 6.00,8.40 Sp G6V dist. 13.08 pc (42.67 l.y.)
 
 
Coord 2000 18389-2103 Discov num WSI  90 Comp AB Coord arcsec 2000 18 38 53.40 -21 03 06.7
Date first 2008 Date last 2009 Obs 5
Pa first 242 Pa last 137.7 P.A. Now (θ) 137.7°
Sep first 0.0 Sep last 0.038 Sep. Now (ρ) 0.038"
Mag pri 6.00 Mag sec 8.40 delta mag (ΔM) 2.4 Spectral class G6V (yellow)
Pri motion ra -075 Sec motion ra
Pri motion dec -152 Sec motion dec
Notes X (Dubious double)
Nature of this double is uncertain.
 
 
18389-2103 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 187086 18 38 53 -21 03 07 WSI 90 AB 2009 5 138 0.0 6.00 8.40 2.40 <===
Show 187086 18 38 53 -21 03 07 TNN 11 AC 2004 1 340 5.0 4.23 15.90 11.67
Show 187086 18 38 53 -21 03 07 TNN 11 AD 2004 1 30 6.4 4.23 17.50 13.27
Quadruple system
4 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Sagittarius SAO 187086 HIP 91438 Tycho2 6279-01723-1
Gaia DR2 4079684229322231040 HD 172051 HR 6998 GC 25484
GL Gl 722 BD BD-21 5081 Distance 13.08 Distance ly 42.67
 
 
WDS 18389-2103 WSI 90 AB : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
Tnn2010 A j Tanner, A.M., Gelino, C.R., & Law, N.M. 2010PASP..122.1195T
Tnn2010 PASP 122, 1195, 2010
WSI (Washington Speckle Interferometer)
WSI1997 Su j Douglass, G.G., Hindsley, R.B., & Worley, C.E. 1997ApJS..111..289D
WSI1997 +Ma ApJS 111, 289, 1997
WSI1999a Su j Germain, M.E., Douglass, G.G., & Worley, C.E. 1999AJ....117.1905G
WSI1999a AJ 117, 1905, 1999
WSI1999b Su j Germain, M.E., Douglass, G.G., & Worley, C.E. 1999AJ....117.2511G
WSI1999b AJ 117, 2511, 1999
WSI1999c Su j Douglass, G.G., Mason, B.D., Germain, M.E., & Worley, C.E. 1999AJ....118.1395D
WSI1999c AJ 118, 1395, 1999
WSI2000a Su j Douglass, G.G., Mason, B.D., Rafferty, T.J., Holdenried, E.R., & Germain, M.E. 2000AJ....119.3071M
WSI2000a AJ 119, 3071, 2000
WSI2000b Su j Mason, B.D., Hartkopf, W.I., Holdenried, E.R., Rafferty, T.J., Wycoff, G.L., 2000AJ....120.1120M
WSI2000b Hennessy, G.S., Hall, D.M., Urban, S.E., et al.
WSI2000b AJ 120, 1120, 2000
WSI2001a Su j Germain, M.E. & Douglass, G.G. 2001AJ....121.2239M
WSI2001a AJ 121, 2239, 2001
WSI2001b Su j Mason, B.D., Hartkopf, W.I., Wycoff, G.L., Holdenried, E.R., Platais, I., 2001AJ....122.1586M
WSI2001b Rafferty, T.J., Hall, D.M., Hennessy, G.S., et al.
WSI2001b AJ 122, 1586, 2001
WSI2002 Su j Mason, B.D., Hartkopf, W.I., Urban, S.E., Wycoff, G.L., Pascu, D., Hall, D.M., 2002AJ....124.2254M
WSI2002 Hennessy, G.S., Platais, I., et al.
WSI2002 AJ 124, 2254, 2002
WSI2004a Su j Mason, B.D., Hartkopf, W.I., Wycoff, G.L., Pascu, D., Urban, S.E., Hall, D.M., 2004AJ....127..539M
WSI2004a +orb Hennessy, G.S., Rafferty, T.J., et al.
WSI2004a AJ 127, 539, 2004
WSI2004b Su j Mason, B.D., Hartkopf, W.I., Wycoff, G.L., Rafferty, T.J., Urban, S., & Flagg, L. 2004AJ....128.3012M
WSI2004b +orb AJ 128, 3012, 2004
WSI2006a Su j Mason, B.D., Hartkopf, W.I., Wycoff, G.L., & Rafferty, T.J. 2006AJ....131.2687M
WSI2006a AJ 131, 2687, 2006
WSI2006b Su j Mason, B.D., Hartkopf, W.I., Wycoff, G.L., & Holdenried, E.R. 2006AJ....132.2219M
WSI2006b +orb AJ 132, 2219, 2006
WSI2007a Su j Mason, B.D., Hartkopf, W.I., Wycoff, G.L., & Wieder, G. 2007AJ....134.1671M
WSI2007a +Cu AJ 134, 1671, 2007
WSI2008 Cu j Mason, B.D., Hartkopf, W.I., & Wycoff, G.L. 2008AJ....136.2223M
WSI2008 AJ 136, 2223, 2008
WSI2010 Cu j Mason, B.D., Hartkopf, W.I., & Wycoff, G.L. 2010AJ....140..480M
WSI2010 AJ 140, 480, 2010
WSI2011 Su j Mason, B.D., Hartkopf, W.I., & Wycoff, G.L. 2011AJ....141..157M
WSI2011 AJ 141, 157, 2011
WSI2011b Cu j Mason, B.D., Hartkopf, W.I., & Wycoff, G.L. 2011AJ....142...46M
WSI2011b AJ 142, 46, 2011
WSI2012 Cu j Mason, B.D., Hartkopf, W.I., & Friedman, E.A. 2012AJ....143..124M
WSI2012 +lin AJ 143, 124, 2012
WSI2013 Cu j Mason, B.D., Hartkopf, W.I., & Hurowitz, H.M. 2013AJ....146...56M
WSI2013 +orb AJ 146, 56, 2013
WSI2013 +lin
WSI2013b Cu j Hartkopf, W.I., Mason, B.D., Finch, C.T., Zacharias, N., Wycoff, G.L., & Hsu, D. 2013AJ....146...76H
WSI2013b +Su AJ 146, 76, 2013 (speckle measures in UCAC doubles paper UC_2013b)
WSI2015 Cu j Hartkopf, W.I. & Mason, B.D. 2015AJ....150..130H
WSI2015 +orb AJ 150, 136, 2015
WSI2015 +lin
WSI2017a Cu j Mason, B.D., Hartkopf, W.I., Bredthauer, G., Ferguson, E.W., Finch, C.T., Kilian, 2017AJ....153...20M
WSI2017a C.M., Rafferty, T.J., Ragan, T.J. & Wieder, G.D.
WSI2017a AJ 153, 20, 2017
WSI2017b Su j Mason, B.D. & Hartkopf, W.I. 2017AJ....154..183M
WSI2017b +Cu AJ 154, 183, 2017
WSI2017b +E+
WSI2017b +H+
WSI2017b +Pa
WSI2017b +Zc
WSI2018a Su j Mason, B.D., Hartkopf, W.I., Urban, S.E. & Josties, J.D. 2018AJ....156..240M
WSI2018a +Cu AJ 156, 240, 2018
WSI2018a +E
WSI2021 Su j Mason, B.D., Williams, S.J., Matson, R.A., Josties, J.D., Eakens, P.D., Justice, 2021AJ....162...53M
WSI2021 +Cu M., Kilian, C.M. & Warner, R.
WSI2021 AJ 162, 53, 2021
WSI2025 Su j Mason, B.D., et al. ...................
WSI2025 in preparation
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18389-2103 WSI 90 AB 2009 5 138 0.0 6.00 8.40 G6V 183853.40-210306.7

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

 
 
WDS 18389-2103 WSI 90 AB : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 18389-2103 WSI 90 AB : MEASURES
 
 
No records found.

 
 
WDS 18389-2103 : VIRTUAL EYEPIECE
 
 

18389-2103 WSI 90A mag 6 Sp G6V 18389-2103 WSI 90B mag 8.4 18389-2103 TNN 11C sep 5.0 P.A. 341.00 mag 15.9 18389-2103 TNN 11D sep 6.3 P.A. 28.40 mag 17.5 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 18389-2103 : ALADIN DSS IMAGE @ 18h 38m 53.40s -21° 03' 06.7"
 
 
 
 
WDS 18389-2103 WSI 90 AB : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

18389-2103 WSI 90AB distance=0' 18395-2101 RST5121AB distance=9' 18395-2101 HJ 2833AC distance=9' 18385-2110 B 1888 distance=10' 18387-2114 ARA1551 distance=11' 18378-2103 ARA1549 distance=16' 18398-2052 OCC1078 distance=18' 18379-2124 OCC 33 distance=25' 18393-2038 ARA1156 distance=27' 18406-2115 ARA1552 distance=27' 18405-2040 OCC1079 distance=32' 18375-2130 ARA1548 distance=34' 18372-2039 DON 914 distance=36' 18406-2034 OCC1080 distance=38' 18416-2108 KPP 422 distance=39' 18391-2025 ARA1155 distance=39' 18365-2128 ARA1547 distance=43' 18386-2020 DON 917 distance=44' 18407-2139 RST5122 distance=45' 18386-2149 J 1633AB distance=47' 18386-2149 J 1633BC distance=47' 18354-2118 ARA1544 distance=51' 18406-2016 ARA1157 distance=54' 18381-2156 ARA1895 distance=54' 18367-2019 HO 567 distance=55' 18360-2146 ARA1545 distance=59' 18431-2051 ARA1159 distance=60' 18352-2140 HU 246 distance=65' 18361-2154 ARA1546 distance=65' 18407-1957 ARA1158 distance=72' 18338-2119 ARA1543 distance=74' 18337-2048 ARA1154 distance=75' 18439-2130 KPP4118 distance=76' 18337-2132 ARA1542 distance=78' 18353-2205 WNO 22 distance=80' 18336-2030 DON 911 distance=82' 18362-1950 ARA 756 distance=82' 18436-2013 DON 920 distance=84' 18452-2117 ARA1553 distance=89' 18453-2039 EVS 37AB distance=93' 18453-2039 EVS 37AC distance=93' 18453-2039 EVS 37AD distance=93' 18453-2039 EVS 37AE distance=93' 18453-2039 EVS 37AF distance=93' 18453-2039 GAA 14Aa,Ab distance=93' 18453-2039 KRV 18AG distance=93' 18453-2039 KRV 18AH distance=93' 18425-1943 ARA 761 distance=95' 18328-2022 KPP 416 distance=95' 18388-1928 BRT1541 distance=96' 18324-2138 ARA1541 distance=97' 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 18389-2103 WSI 90 AB 138 0.0
Show 18389-2103 TNN 11 AC 340 5.0
Show 18389-2103 TNN 11 AD 30 6.4
Show 18395-2101 RST5121 AB 21 4.2 9
Show 18395-2101 HJ 2833 AC 314 21.8 9
Show 18385-2110 B 1888 302 4.8 10
Show 18387-2114 ARA1551 137 6.1 11
Show 18378-2103 ARA1549 188 14.1 16
Show 18398-2052 OCC1078 -1 0.7 18
Show 18379-2124 OCC 33 -1 0.1 25
Show 18393-2038 ARA1156 16 15.8 27
Show 18406-2115 ARA1552 287 12.6 27
Show 18405-2040 OCC1079 -1 0.0 32
Show 18375-2130 ARA1548 336 14.8 34
Show 18372-2039 DON 914 174 0.4 36
Show 18406-2034 OCC1080 -1 0.0 38
Show 18416-2108 KPP 422 299 4.7 39
Show 18391-2025 ARA1155 238 11.6 39
Show 18365-2128 ARA1547 230 11.0 43
Show 18386-2020 DON 917 51 1.1 44
Show 18407-2139 RST5122 189 2.1 45
Show 18386-2149 J 1633 AB 143 36.8 47
Show 18386-2149 J 1633 BC 149 7.5 47
Show 18354-2118 ARA1544 180 6.1 51
Show 18406-2016 ARA1157 356 9.5 54
Show 18381-2156 ARA1895 26 16.0 54
Show 18367-2019 HO 567 165 1.3 55
Show 18360-2146 ARA1545 203 12.9 59
Show 18431-2051 ARA1159 84 11.7 60
Show 18352-2140 HU 246 68 2.6 65
Show 18361-2154 ARA1546 173 10.4 65
Show 18407-1957 ARA1158 68 6.6 72
Show 18338-2119 ARA1543 253 8.5 74
Show 18337-2048 ARA1154 288 7.2 75
Show 18439-2130 KPP4118 341 3.9 76
Show 18337-2132 ARA1542 114 11.6 78
Show 18353-2205 WNO 22 269 11.4 80
Show 18336-2030 DON 911 348 2.1 82
Show 18362-1950 ARA 756 325 9.5 82
Show 18436-2013 DON 920 336 1.4 84
Show 18452-2117 ARA1553 273 10.1 89
Show 18453-2039 EVS 37 AB 128 3.1 93
Show 18453-2039 EVS 37 AC 67 10.8 93
Show 18453-2039 EVS 37 AD 156 10.6 93
Show 18453-2039 EVS 37 AE 271 11.5 93
Show 18453-2039 EVS 37 AF 330 18.2 93
Show 18453-2039 GAA 14 Aa,Ab 349 0.0 93
Show 18453-2039 KRV 18 AG 250 29.9 93
Show 18453-2039 KRV 18 AH 304 34.9 93
Show 18425-1943 ARA 761 242 6.9 95
Show 18328-2022 KPP 416 159 4.9 95

 
 
WDS 18389-2103 : COMPONENTS
 
 
  A B C
B pa=139.7°
sep=0.04"
 
C pa=341.0°
sep=4.98"
pa=340.9°
sep=5.02"
 
D pa=28.4°
sep=6.30"
pa=28.1°
sep=6.31"
pa=79.9°
sep=4.69"
 
 
18389-2103 A
 
 
Coord arcsec 2000 183853.40-210306.7 Mag 6 Spectral class G6V (yellow) PmRA -75.00
PmDE -152.0 SAO 187086 HIP 91438 Tycho2 6279-01723-1
HD 172051 HR 6998 GC 25484 BD BD-21 5081
Tycho2
Tycho2 6279-01723-1 Pflag RAmdeg 279.72250512 DEmdeg -21.05187310
PmRA -74.1 PmDE -152.5 E RAmdeg 4 E DEmdeg 4
E pmRA 0.7 E pmDE 0.7 EpRAm 1991.06 EpDEm 1991.13
Num 23 Q RAmdeg 0.8 Q DEmdeg 0.8 Q pmRA 0.7
Q pmDE 0.7 BTmag 6.666 E BTmag 0.015 VTmag 5.935
E VTmag 0.010 Prox 999 TYC T HIP 91438
CCDM RAdeg 279.72268806 DEdeg -21.05151861 EpRA 1990 1.70
EpDE 1990 1.63 E RAdeg 4.0 E DEdeg 4.4 Posflg
Corr 0.0
SAO
SAO 187086 DelFlag RA1950 PmRA1950 -0.0057
DE1950 PmDE1950 -0.152 Vmag 5.9 SpType G5
Double code Source 70 CatNum 25484 DM BD-21 5081
DMcomp BDsup HD 172051 M HD 0
GC 25484 RA1950rad 4.8690658 DE1950rad -0.36817673 PmRA2000 -0.0056
PmDE2000 -0.152
Hipparcos
Catalog H HIP 91438 Proxy RAhms 18 38 53.45
DEdms -21 03 05.4 Vmag 5.85 VarFlag R Vmag H
RAdeg 279.723 DEdeg -21.0515 AstroRef Plx 77.02
CCDM N CCDM Nsys Ncomp 1
MultFlag Source Qual M HIP
Theta Rho HD 172051 BD BD-21 5081
CD CP Dm number -21 5081 VIred 0.73
SpType G5V R SpType Coord arcsec 2000 183853.45-210305.4
Hipparcos 2
HIP 91438 Sn 5 So 0 Nc 1
RArad 4.8820820523 DErad -0.3674180204 Plx 76.43 PmRA -74.85
PmDE -152 E RArad 0.49 E DErad 0.28 E Plx 0.47
E pmRA 0.77 E pmDE 0.47 Hpmag 5.9841 E Hpmag 0.0009
SHp 0.006 VA 0 BV 0.673 E BV 0.002
VI 0.73
 
 
18389-2103 B
 
 
Coord arcsec 2000 183853.40-210306.7 Mag 8.4 Calc delta mag 2.4 Calc coord yes
 
 
18389-2103 C
 
 
Coord arcsec 2000 183853.28-210302.0 Mag 15.9 Calc delta mag 9.9 Calc coord yes
 
 
18389-2103 D
 
 
Coord arcsec 2000 183853.61-210301.2 Mag 17.5 Calc delta mag 11.5 Calc coord yes