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Doubles in session


Current system
18042-2230
B 1875 BC


Nearby doubles
1' : 18041-2230
ARA1841

2' : 18042-2231
ARA1843

10' : 18043-2239
LYS 32

13' : 18034-2237
ARA1839

17' : 18030-2233
ARA1838AB

18' : 18039-2247
ARA1840

21' : 18039-2250
B 2430

21' : 18030-2243
RSS 468

26' : 18060-2238
BRT1513

29' : 18030-2252
TDS 898

29' : 18058-2212
ARA1844

35' : 18061-2207
B 1877

36' : 18054-2300
LYS 33AB

36' : 18033-2156
TDT 656

36' : 18068-2228
LYS 34

36' : 18019-2247
BU 283AB

38' : 18015-2221
ARA1836

39' : 18018-2208
ARA1837

41' : 18071-2224
LYS 35AB

41' : 18024-2302
H N 40AB

42' : 18027-2306
RST3151

44' : 18065-2200
J 2906

44' : 18068-2203
J 2907

45' : 18074-2240
J 3203

45' : 18055-2312
ARA2211

46' : 18057-2149
VVV 52



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.
 
 
WDS 18042-2230 : COMPONENTS
 
 
  A B C D
B pa=315.6°
sep=29.69"
 
C pa=314.7°
sep=29.75"
pa=233.4°
sep=0.45"
 
D pa=13.1°
sep=39.12"
pa=60.3°
sep=34.14"
pa=60.2°
sep=34.58"
 
E pa=30.4°
sep=39.14"
pa=72.8°
sep=42.48"
pa=72.6°
sep=42.90"
pa=111.6°
sep=11.74"
 
 
18042-2230 A
 
 
Name HD 164863 Coord arcsec 2000 180412.64-223003.2 Mag 7.22 Spectral class O (blue)
PmRA 0.00 PmDE -4.0 Tycho2 6842-00246-1 HD 164863
Tycho2
Tycho2 6842-00246-1 Pflag RAmdeg 271.05267437 DEmdeg -22.50091028
PmRA -0.4 PmDE -4.4 E RAmdeg 4 E DEmdeg 5
E pmRA 1.4 E pmDE 1.4 EpRAm 1991.65 EpDEm 1991.46
Num 11 Q RAmdeg 1.0 Q DEmdeg 1.0 Q pmRA 1.1
Q pmDE 1.1 BTmag 7.171 E BTmag 0.015 VTmag 7.224
E VTmag 0.011 Prox 297 TYC T HIP
CCDM RAdeg 271.05267528 DEdeg -22.50090000 EpRA 1990 1.90
EpDE 1990 1.83 E RAdeg 4.0 E DEdeg 5.0 Posflg
Corr -0.2
CCDM
Ccdm 18042-2230 RComp Comp A Note1
Note2 Discov num DRAs 0.79 DDEs -2.7
R dRAs 43 Year Theta Rho
Obs 9 Vmag 7.9 Sp B0 PmNote *
PmRA -5 PmDE -2 Dm number -22 4541 Cat1 BD
Name2 186216 Cat2 SAO HD 164863 M HD
ADS BDS B 8307 M ADS BDS N IDS IDS 17582S2230A
HIC
 
 
18042-2230 B
 
 
Coord arcsec 2000 180411.14-222942.0 Coord calc 180411.14-222942.0 Mag 8.52 Spectral class B0V (blue-white)
PmRA 0.00 PmDE 1.0 Tycho2 6263-00104-1 HD 313693
Calc delta mag 1.3
Tycho2
Tycho2 6263-00104-1 Pflag RAmdeg 271.04638446 DEmdeg -22.49502076
PmRA -14.7 PmDE -3.4 E RAmdeg 7 E DEmdeg 8
E pmRA 2.9 E pmDE 2.9 EpRAm 1991.86 EpDEm 1991.79
Num 3 Q RAmdeg 3.3 Q DEmdeg 0.5 Q pmRA 3.3
Q pmDE 0.4 BTmag 8.437 E BTmag 0.017 VTmag 8.517
E VTmag 0.015 Prox 297 TYC T HIP
CCDM RAdeg 271.04642000 DEdeg -22.49501306 EpRA 1990 1.94
EpDE 1990 1.90 E RAdeg 6.6 E DEdeg 8.3 Posflg
Corr -0.2
CCDM
Ccdm 18042-2230 RComp Comp B Note1
Note2 Discov num S 698 DRAs -0.70 DDEs 19.7
R dRAs 43 Year 1984 Theta 315 Rho 30.6
Obs 3 Vmag 8.8 Sp B8 PmNote *
PmRA 50 PmDE 47 Dm number -22 4538 Cat1 BD
Name2 186215 Cat2 SAO HD M HD
ADS BDS B 8307 M ADS BDS N IDS IDS 17582S2230B
HIC
 
 
18042-2230 C
 
 
Coord arcsec 2000 180411.11-222942.3 Mag 13.2 Spectral class A3V (white) Calc delta mag 5.98
Calc coord yes
CCDM
Ccdm 18042-2230 RComp B Comp C Note1
Note2 Discov num B 1875 DRAs DDEs
R dRAs Year 1930 Theta 156 Rho 2.0
Obs 1 Vmag 13.2 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS M ADS BDS N IDS IDS 17582S2230C
HIC
 
 
18042-2230 D
 
 
Coord arcsec 2000 180413.28-222925.1 Coord calc 180413.28-222925.1 Mag 10.6 Spectral class A2V (white)
PmRA 6.00 PmDE -2.0 Calc delta mag 3.38
CCDM
Ccdm 18042-2230 RComp B Comp D Note1
Note2 Discov num LYS DRAs 1.36 DDEs 35.6
R dRAs 43 Year 1984 Theta 060 Rho 33.7
Obs 1 Vmag 10.6 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS M ADS BDS N IDS IDS 17582S2230A
HIC
 
 
18042-2230 E
 
 
Coord arcsec 2000 180414.07-222929.4 Mag 12.9 PmRA 11.00 PmDE -2.0
Calc delta mag 5.68 Calc coord yes
CCDM
Ccdm 18042-2230 RComp D Comp E Note1
Note2 Discov num ARA1842 DRAs 2.21 DDEs 31.4
R dRAs 43 Year 1984 Theta 110 Rho 12.6
Obs 3 Vmag 12.9 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS M ADS BDS N N IDS IDS 17582S2230B
HIC