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Doubles in session


Current system
18488-1836
KUI 88
HD 173928


Nearby doubles
3' : 18488-1838
RSS 491

15' : 18498-1836
TDT1075

21' : 18500-1826
J 1658

22' : 18480-1817
WSI 36

22' : 18496-1854
OCC 454

23' : 18482-1820
J 1636

25' : 18480-1814
RST3198

31' : 18505-1818
TDT1081

33' : 18503-1812
TDT1080

35' : 18496-1909
OCC 455AB

36' : 18506-1813
RST3200

44' : 18470-1912
HJ 2837

48' : 18494-1750
HJ 2840

57' : 18494-1740
TDT1072

59' : 18510-1747
HJ 2842

60' : 18500-1933
KPP4124

61' : 18483-1935
B 2461

62' : 18531-1838
HO 569AB

63' : 18479-1936
J 1657

65' : 18526-1909
ARA 764

71' : 18465-1940
BRT1543

85' : 18429-1829
ARA 488

88' : 18516-1719
HU 255

89' : 18510-1958
ARA1162AB

91' : 18442-1733
HLD 146

91' : 18528-1725
HU 257



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.

18488-1836 KUI 88 (HD 173928)

 
 
18h 48m 45.41s -18° 36' 04.2" P.A. 153.00 sep 0.5 mag 6.87,8.14 Sp A1+K0 dist. 312.5 pc (1019.38 l.y.)
 
 
Coord 2000 18488-1836 Discov num KUI  88 Comp Coord arcsec 2000 18 48 45.41 -18 36 04.2
Date first 1933 Date last 2018 Obs 42
Pa first 195 Pa last 152.9 P.A. Now (θ) 152.9°
Sep first 0.3 Sep last 0.498 Sep. Now (ρ) 0.498"
Mag pri 6.87 Mag sec 8.14 delta mag (ΔM) 1.27 Spectral class A1+K0 (white/yellow-orange)
Pri motion ra +003 Sec motion ra +003
Pri motion dec -002 Sec motion dec -002
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 173928 Constellation Sagittarius SAO 161848 HIP 92301
Tycho2 6285-00193-1 Gaia DR2 4098425954745263104 HD 173928 HR 7072
GC 25761 BD BD-18 5079 Distance 312.5 Distance ly 1019.38
 
 
ORBITAL ELEMENTS
 
 
Period (P)909.7y Periastron (T)1865y Semi-major axis (a)0.598a
Eccentricity (e)0.341 Inclination (i)124° Longitude of periastron (ω)232°
Node (Ω)137.8° Notes ReferenceHrt2013c
Equinox2000 Last observation2003 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 159.9 0.467
2001 159.5 0.470
2002 159.2 0.473
2003 158.9 0.476
2004 158.5 0.479
2005 158.2 0.482
2006 157.9 0.485
2007 157.6 0.488
2008 157.3 0.490
2009 157.0 0.493
2010 156.7 0.496
2011 156.4 0.499
2012 156.1 0.501
2013 155.8 0.504
2014 155.5 0.507
2015 155.2 0.510
2016 154.9 0.512
2017 154.6 0.515
2018 154.3 0.518
2019 154.1 0.520
2020 153.8 0.523
2021 153.5 0.525
2022 153.3 0.528
2023 153.0 0.531
2024 152.7 0.533
2025 152.5 0.536
2026 152.2 0.538
2027 152.0 0.541
2028 151.7 0.543
2029 151.4 0.545
2030 151.2 0.548


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


 
  


wds18488-1836a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 18488-1836 KUI 88 (HD 173928) : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
Hrt2013c orb - Hartkopf, W.I. & Harshaw, R. 2013IAUDS.181Q...1H
Hrt2013c Inf. Circ. 181, 1, 2013
 
 
DISCOVERER
 
 
idgroup discov author
1 KUI Kuiper, G.P., Schilt, van den Bos, W., and van Gent
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18488-1836 KUI 88 1997 38 161 0.5 6.87 8.14 A1 K0 O 184845.41-183604.2
18488-1836 KUI 88 2003 39 156 0.4 6.87 8.14 A1+K0 D 184845.41-183604.2
18488-1836 KUI 88 2016 39 158 0.7 6.87 8.14 A1+K0 O 184845.41-183604.2
18488-1836 KUI 88 2017 40 153 0.5 6.87 8.14 A1+K0 O 184845.41-183604.2
18488-1836 KUI 88 2018 41 153 0.5 6.87 8.14 A1+K0 O 184845.41-183604.2

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

 
 
WDS 18488-1836 KUI 88 (HD 173928) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 18488-1836 KUI 88 (HD 173928) : MEASURES
 
 
No records found.

 
 
WDS 18488-1836 (HD 173928) : VIRTUAL EYEPIECE
 
 

18488-1836 KUI 88A mag 6.87 Sp A1 18488-1836 KUI 88B sep 0.5 P.A. 154.10 mag 8.14 Sp K0 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 18488-1836 (HD 173928) : ALADIN DSS IMAGE @ 18h 48m 45.41s -18° 36' 04.2"
 
 
 
 
WDS 18488-1836 KUI 88 (HD 173928) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

18488-1836 KUI 88 distance=0' 18488-1838 RSS 491 distance=3' 18498-1836 TDT1075 distance=15' 18500-1826 J 1658 distance=21' 18480-1817 WSI 36 distance=22' 18496-1854 OCC 454 distance=22' 18482-1820 J 1636 distance=23' 18480-1814 RST3198 distance=25' 18505-1818 TDT1081 distance=31' 18503-1812 TDT1080 distance=33' 18496-1909 OCC 455AB distance=35' 18506-1813 RST3200 distance=36' 18470-1912 HJ 2837 distance=44' 18494-1750 HJ 2840 distance=48' 18494-1740 TDT1072 distance=57' 18510-1747 HJ 2842 distance=59' 18500-1933 KPP4124 distance=60' 18483-1935 B 2461 distance=61' 18531-1838 HO 569AB distance=62' 18531-1838 OCC9186Aa,Ab distance=62' 18479-1936 J 1657 distance=63' 18526-1909 ARA 764 distance=65' 18465-1940 BRT1543 distance=71' 18429-1829 ARA 488 distance=85' 18516-1719 HU 255 distance=88' 18510-1958 ARA1162AB distance=89' 18510-1958 FYM 269AC distance=89' 18510-1958 FYM 269AD distance=89' 18442-1733 HLD 146 distance=91' 18528-1725 HU 257 distance=91' 18429-1917 OCC9184 distance=93' 18487-1702 J 2235BC distance=93' 18487-1702 J 2235AB distance=94' 18536-1941 RST3203 distance=95' 18498-1655 TDT4316 distance=103' 18496-1654 HWE 44AB distance=103' 18496-1654 HWE 44AC distance=103' 18496-1654 KNP 3AD distance=103' 18441-1954 ARA1160 distance=103' 18439-1954 STN 44 distance=104' 18435-1725 RST3194 distance=104' 18497-2019 SEE 362 distance=105' 18418-1909 J 2221AB distance=105' 18418-1909 J 2221AC distance=105' 18510-2018 PLT 3AB distance=107' 18510-2018 EVS 38AC distance=107' 18562-1843 OCC 964 distance=107' 18549-1733 RST3205AB distance=108' 18549-1733 HJ 2843AB,C distance=108' 18547-1946 OL 80 distance=110' 18480-1647 HJ 2838 distance=111' 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 18488-1836 KUI 88 153 0.5
Show 18488-1838 RSS 491 334 10.8 3
Show 18498-1836 TDT1075 97 0.5 15
Show 18500-1826 J 1658 59 8.4 21
Show 18480-1817 WSI 36 262 15.8 22
Show 18496-1854 OCC 454 -1 0.1 22
Show 18482-1820 J 1636 78 7.1 23
Show 18480-1814 RST3198 154 0.4 25
Show 18505-1818 TDT1081 75 0.5 31
Show 18503-1812 TDT1080 134 0.9 33
Show 18496-1909 OCC 455 AB -1 0.2 35
Show 18506-1813 RST3200 0.7 36
Show 18470-1912 HJ 2837 89 11.2 44
Show 18494-1750 HJ 2840 173 15.2 48
Show 18494-1740 TDT1072 310 0.7 57
Show 18510-1747 HJ 2842 338 29.9 59
Show 18500-1933 KPP4124 15 1.5 60
Show 18483-1935 B 2461 197 6.7 61
Show 18531-1838 HO 569 AB 38 15.6 62
Show 18531-1838 OCC9186 Aa,Ab -1 -1.0 62
Show 18479-1936 J 1657 28 3.6 63
Show 18526-1909 ARA 764 221 10.8 65
Show 18465-1940 BRT1543 258 3.3 71
Show 18429-1829 ARA 488 167 20.8 85
Show 18516-1719 HU 255 166 1.4 88
Show 18510-1958 ARA1162 AB 290 10.3 89
Show 18510-1958 FYM 269 AC 179 7.0 89
Show 18510-1958 FYM 269 AD 342 16.7 89
Show 18442-1733 HLD 146 194 2.2 91
Show 18528-1725 HU 257 341 2.1 91
Show 18429-1917 OCC9184 -1 0.1 93
Show 18487-1702 J 2235 BC 5 6.6 93
Show 18487-1702 J 2235 AB 203 90.0 94
Show 18536-1941 RST3203 330 0.6 95
Show 18498-1655 TDT4316 333 45.1 103
Show 18496-1654 HWE 44 AB 298 2.0 103
Show 18496-1654 HWE 44 AC 308 36.4 103
Show 18496-1654 KNP 3 AD 200 22.2 103
Show 18441-1954 ARA1160 184 8.4 103
Show 18439-1954 STN 44 316 1.6 104
Show 18435-1725 RST3194 87 4.0 104
Show 18497-2019 SEE 362 13.8 105
Show 18418-1909 J 2221 AB 254 7.5 105
Show 18418-1909 J 2221 AC 346 17.9 105
Show 18510-2018 PLT 3 AB 101 93.6 107
Show 18510-2018 EVS 38 AC 158 3.3 107
Show 18562-1843 OCC 964 -1 0.0 107
Show 18549-1733 RST3205 AB 300 0.5 108
Show 18549-1733 HJ 2843 AB,C 339 22.0 108
Show 18547-1946 OL 80 141 3.5 110
Show 18480-1647 HJ 2838 335 33.4 111

 
 
WDS 18488-1836 : COMPONENTS
 
 
  A
B pa=154.1°
sep=0.49"
 
 
18488-1836 A
 
 
Componente originario normalizzato AB Name HD 173928 Coord arcsec 2000 184845.41-183604.2 Mag 6.87
Spectral class A1 (white) PmRA 3.00 PmDE -2.0 SAO 161848
HIP 92301 Tycho2 6285-00193-1 HD 173928 HR 7072
GC 25761 BD BD-18 5079
Tycho2
Tycho2 6285-00193-1 Pflag RAmdeg 282.18923362 DEmdeg -18.60120193
PmRA 3.3 PmDE -1.5 E RAmdeg 4 E DEmdeg 5
E pmRA 0.9 E pmDE 0.9 EpRAm 1991.44 EpDEm 1991.12
Num 17 Q RAmdeg 1.0 Q DEmdeg 1.6 Q pmRA 1.1
Q pmDE 1.6 BTmag 7.554 E BTmag 0.016 VTmag 6.627
E VTmag 0.010 Prox 999 TYC T HIP 92301
CCDM AB RAdeg 282.18922583 DEdeg -18.60119889 EpRA 1990 1.85
EpDE 1990 1.74 E RAdeg 3.8 E DEdeg 4.8 Posflg P
Corr 0.1
SAO
SAO 161848 DelFlag RA1950 PmRA1950 -0.0006
DE1950 PmDE1950 -0.005 Vmag 6.5 SpType A0
Double code Source 70 CatNum 25761 DM BD-18 5079
DMcomp BDsup HD 173928 M HD 0
GC 25761 RA1950rad 4.91233976 DE1950rad -0.32564817 PmRA2000 -0.0005
PmDE2000 -0.004
Hipparcos
Catalog H HIP 92301 Proxy H RAhms 18 48 45.41
DEdms -18 36 04.2 Vmag 6.46 VarFlag R Vmag G
RAdeg 282.189 DEdeg -18.6012 AstroRef A Plx 4.1
CCDM 18488-1836 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 163 Rho 0.437 HD 173928 BD BD-18 5079
CD CP Dm number -18 5079 VIred -0.05
SpType A1V + K1III R SpType Coord arcsec 2000 184845.41-183604.2
Hipparcos 2
HIP 92301 Sn 17 So 3 Nc 2
RArad 4.9251308907 DErad -0.3246514219 Plx 3.2 PmRA 2.8
PmDE 3.08 E RArad 1.1 E DErad 0.78 E Plx 1.11
E pmRA 1.52 E pmDE 1.01 Hpmag 6.6078 E Hpmag 0.0023
SHp 0.023 VA 0 BV 0.902 E BV 0.006
VI 0.9
CCDM
Ccdm 18488-1836 RComp Comp A Note1
Note2 Discov num DRAs -2.67 DDEs -4.4
R dRAs 10 Year Theta Rho
Obs 2 Vmag 7.0 Sp A0 PmNote *
PmRA -7 PmDE -3 Dm number -18 5079 Cat1 BD
Name2 161848 Cat2 SAO HD 173928 M HD
ADS BDS M ADS BDS N IDS IDS 18429S1842A
HIC 92301
 
 
18488-1836 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 184845.43-183604.6 Mag 8.14 Spectral class K0 (yellow-orange)
PmRA 3.00 PmDE -2.0 Calc delta mag 1.27 Calc coord yes
CCDM
Ccdm 18488-1836 RComp Comp B Note1
Note2 Discov num KUI 88 DRAs DDEs
R dRAs Year 1959 Theta 182 Rho 0.3
Obs 15 Vmag 7.7 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS M ADS BDS N IDS IDS 18429S1842B
HIC 92301