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Doubles in session


Current system
17564+1820
MCA 49 Aa,Ab


Nearby doubles
11' : 17568+1811
LDS1003

12' : 17569+1811
J 1352

15' : 17557+1830
HDS2528

15' : 17567+1806
J 459

29' : 17584+1812
J 3268

45' : 17568+1736
BPM 710

47' : 17569+1906
RAO 381

52' : 17595+1753
BPM 715

63' : 17533+1904
KU 56AB

67' : 17579+1923
KPP 406

72' : 18014+1811
GWP2756

75' : 17524+1733
BPM 703

75' : 18005+1734
COU 809

76' : 17577+1707
AG 357

76' : 18007+1736
COU 810

78' : 17510+1821
HDS2517

83' : 18019+1754
LEP 156

86' : 18008+1721
GWP2752

87' : 17537+1702
BPM 706

89' : 18024+1758
BPM 717

93' : 17513+1723
TDT 536

93' : 17524+1708
TDT 550

96' : 17527+1940
BRT2439

97' : 17503+1737
BPM 702

98' : 17530+1655
CRC 27AB

109' : 17547+1633
UC 234



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 17564+1820 : COMPONENTS
 
 
  A Ab
Ab pa=318.9°
sep=0.04"
 
B pa=293.1°
sep=2.55"
pa=292.7°
sep=2.52"
 
 
17564+1820 A
 
 
Componente generatrice A Coord arcsec 2000 175624.40+181937.1 Mag 7.55 PmRA -2.00
PmDE -12.0 SAO 103227 HIP 87823 Tycho2 1557-01939-2
HD 163640 GC 24401 BD BD+18 3500 Calc delta mag 0.12
Calc coord yes
Tycho2
Tycho2 1557-01939-2 Pflag P RAmdeg 269.10161631 DEmdeg 18.32703998
PmRA -0.1 PmDE -11.3 E RAmdeg 5 E DEmdeg 5
E pmRA 1.3 E pmDE 1.3 EpRAm 1991.51 EpDEm 1991.43
Num 6 Q RAmdeg 1.4 Q DEmdeg 0.8 Q pmRA 1.5
Q pmDE 0.8 BTmag 8.760 E BTmag 0.017 VTmag 7.549
E VTmag 0.011 Prox 26 TYC T HIP 87823
CCDM B RAdeg 269.10101306 DEdeg 18.32729694 EpRA 1990 1.69
EpDE 1990 1.61 E RAdeg 4.7 E DEdeg 5.3 Posflg D
Corr -0.1
SAO
SAO 103227 DelFlag RA1950 PmRA1950 0.0009
DE1950 PmDE1950 -0.01 Vmag 7.3 SpType A2
Double code Source 70 CatNum 24401 DM BD+18 3500
DMcomp A BDsup HD 163640 M HD 1
GC 24401 RA1950rad 4.68714139 DE1950rad 0.31996649 PmRA2000 0.001
PmDE2000 -0.009
Hipparcos
Catalog H HIP 87823 Proxy H RAhms 17 56 24.41
DEdms +18 19 37.3 Vmag 6.66 VarFlag R Vmag G
RAdeg 269.102 DEdeg 18.327 AstroRef A Plx 4.73
CCDM 17564+1820 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 292 Rho 2.613 HD 163640 BD BD+18 3500
CD CP Dm number +18 3500 VIred 0.47
SpType A0III R SpType Coord arcsec 2000 175624.41+181937.3
Hipparcos 2
HIP 87823 Sn 15 So 3 Nc 2
RArad 4.6967110424 DErad 0.319866943 Plx 4.15 PmRA -3.11
PmDE -10.12 E RArad 0.79 E DErad 0.7 E Plx 0.95
E pmRA 0.97 E pmDE 0.7 Hpmag 6.7573 E Hpmag 0.0008
SHp 0.009 VA 0 BV 0.4 E BV 0.015
VI 0.47
CCDM
Ccdm 17564+1820 RComp Comp A Note1
Note2 Discov num DRAs 0.49 DDEs -23.1
R dRAs 10 Year Theta Rho
Obs 2 Vmag 7.4 Sp A2 PmNote *
PmRA 11 PmDE -9 Dm number +18 3500 Cat1 BD
Name2 103227 Cat2 SAO HD 163640 M HD
ADS BDS A10905 M ADS BDS N IDS IDS 17520N1821A
HIC 87823
 
 
17564+1820 Ab
 
 
Coord arcsec 2000 175624.40+181937.1 Mag 8.4 Calc delta mag 0.8 Calc coord yes
 
 
17564+1820 B
 
 
Name HD 163640 Coord arcsec 2000 175624.24+181938.1 Mag 7.43 Spectral class A0III (white)
PmRA 2.00 PmDE -11.0 Tycho2 1557-01939-1 Calc delta mag 0.17
Tycho2
Tycho2 1557-01939-1 Pflag P RAmdeg 269.10161631 DEmdeg 18.32703998
PmRA -0.1 PmDE -11.3 E RAmdeg 5 E DEmdeg 5
E pmRA 1.3 E pmDE 1.3 EpRAm 1991.51 EpDEm 1991.43
Num 6 Q RAmdeg 1.4 Q DEmdeg 0.8 Q pmRA 1.5
Q pmDE 0.8 BTmag 7.429 E BTmag 0.015 VTmag 7.426
E VTmag 0.010 Prox 26 TYC T HIP 87823
CCDM A RAdeg 269.10172111 DEdeg 18.32702639 EpRA 1990 1.72
EpDE 1990 1.62 E RAdeg 4.0 E DEdeg 4.3 Posflg D
Corr -0.2
CCDM
Ccdm 17564+1820 RComp Comp B Note1
Note2 Discov num STF2245 DRAs 0.26 DDEs -21.9
R dRAs 10 Year 1829 Theta 293 Rho 2.6
Obs 99 Vmag 7.4 Sp PmNote *
PmRA 1 PmDE -11 Dm number Cat1
Name2 103226 Cat2 SAO HD M HD
ADS BDS A10905 M ADS BDS N IDS IDS 17520N1821B
HIC 87823