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Current system
20518-3434
B 504
HD 198504


Nearby doubles
8' : 20521-3428
B 999

20' : 20525-3451
NSN 490

41' : 20521-3353
SEE 430

43' : 20521-3517
RST3270

49' : 20551-3408
HJ 5234

50' : 20518-3523
KPP1661

52' : 20532-3521
BRT1814

53' : 20500-3347
HJ 5224

64' : 20501-3534
HDS2969

69' : 20480-3523
B 2892

71' : 20570-3406
RST3272

71' : 20575-3435
BRT1816

74' : 20506-3545
TDT2573

75' : 20458-3443
HJ 5219

80' : 20565-3340
B 1002

82' : 20501-3315
UC 4305

84' : 20571-3526
B 510

87' : 20467-3336
HDS2960AB

90' : 20452-3510
SEE 428

91' : 20517-3303
UC 4311

93' : 20588-3402
RST3274

94' : 20579-3339
RED 26

99' : 20510-3256
RST2162

100' : 20598-3452
TDT2682

101' : 20556-3304
LDS6419

105' : 20516-3618
B 998



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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 20518-3434 : COMPONENTS
 
 
  A
B pa=32.9°
sep=2.13"
 
 
20518-3434 A
 
 
Componente originario normalizzato AB Name HD 198504 Coord arcsec 2000 205149.71-343339.3 Mag 10.26
Spectral class A2II/III (white) PmRA -2.00 PmDE -6.0 HIP 102979
Tycho2 7466-01211-2 HD 198504 CD CD-3514403 CP CP-35 8928
Tycho2
Tycho2 7466-01211-2 Pflag P RAmdeg 312.95713014 DEmdeg -34.56091902
PmRA -2.2 PmDE -6.0 E RAmdeg 29 E DEmdeg 33
E pmRA 2.3 E pmDE 2.3 EpRAm 1989.63 EpDEm 1988.60
Num 4 Q RAmdeg 0.6 Q DEmdeg 2.2 Q pmRA 0.6
Q pmDE 2.2 BTmag 10.556 E BTmag 0.041 VTmag 10.255
E VTmag 0.041 Prox 23 TYC T HIP 102979
CCDM A RAdeg 312.95697944 DEdeg -34.56107111 EpRA 1990 1.58
EpDE 1990 1.42 E RAdeg 23.1 E DEdeg 27.4 Posflg D
Corr -0.2
Hipparcos
Catalog H HIP 102979 Proxy H RAhms 20 51 49.68
DEdms -34 33 39.8 Vmag 9.65 VarFlag R Vmag H
RAdeg 312.957 DEdeg -34.5611 AstroRef A Plx 3.68
CCDM 20518-3434 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 38 Rho 2.277 HD 198504 BD
CD CD-3514403 CP CP-35 8928 Dm number -3514403 VIred 0.22
SpType A2II/III R SpType Coord arcsec 2000 205149.68-343339.8
Hipparcos 2
HIP 102979 Sn 15 So 3 Nc 2
RArad 5.4621298115 DErad -0.6032044337 Plx 4.41 PmRA -1.76
PmDE -4.05 E RArad 1.85 E DErad 1.3 E Plx 2.02
E pmRA 2.39 E pmDE 1.6 Hpmag 9.7531 E Hpmag 0.0026
SHp 0.02 VA 0 BV 0.427 E BV 0.036
VI 0.49
CCDM
Ccdm 20518-3434 RComp Comp A Note1
Note2 Discov num DRAs 1.94 DDEs 22.1
R dRAs 35 Year Theta Rho
Obs 2 Vmag 10.0 Sp F5 PmNote
PmRA PmDE Dm number -3514403 Cat1 CD
Name2 Cat2 HD 198504 M HD
ADS BDS M ADS BDS N IDS IDS 20456S3456A
HIC 102979
 
 
20518-3434 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 205149.80-343337.5 Mag 10.53 PmRA -2.00
PmDE -6.0 HIP 102979 Tycho2 7466-01211-1 Calc delta mag 0.27
Calc coord yes
Tycho2
Tycho2 7466-01211-1 Pflag P RAmdeg 312.95713014 DEmdeg -34.56091902
PmRA -2.2 PmDE -6.0 E RAmdeg 29 E DEmdeg 33
E pmRA 2.3 E pmDE 2.3 EpRAm 1989.63 EpDEm 1988.60
Num 4 Q RAmdeg 0.6 Q DEmdeg 2.2 Q pmRA 0.6
Q pmDE 2.2 BTmag 10.985 E BTmag 0.054 VTmag 10.525
E VTmag 0.048 Prox 23 TYC T HIP 102979
CCDM B RAdeg 312.95744528 DEdeg -34.56057750 EpRA 1990 1.57
EpDE 1990 1.43 E RAdeg 28.9 E DEdeg 34.4 Posflg D
Corr -0.2
Hipparcos
Catalog H HIP 102979 Proxy H RAhms 20 51 49.68
DEdms -34 33 39.8 Vmag 9.65 VarFlag R Vmag H
RAdeg 312.957 DEdeg -34.5611 AstroRef A Plx 3.68
CCDM 20518-3434 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 38 Rho 2.277 HD 198504 BD
CD CD-3514403 CP CP-35 8928 Dm number -3514403 VIred 0.22
SpType A2II/III R SpType Coord arcsec 2000 205149.68-343339.8
Hipparcos 2
HIP 102979 Sn 15 So 3 Nc 2
RArad 5.4621298115 DErad -0.6032044337 Plx 4.41 PmRA -1.76
PmDE -4.05 E RArad 1.85 E DErad 1.3 E Plx 2.02
E pmRA 2.39 E pmDE 1.6 Hpmag 9.7531 E Hpmag 0.0026
SHp 0.02 VA 0 BV 0.427 E BV 0.036
VI 0.49
CCDM
Ccdm 20518-3434 RComp Comp B Note1
Note2 Discov num B 504 DRAs DDEs
R dRAs Year 1927 Theta 039 Rho 2.2
Obs 6 Vmag 10.2 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS M ADS BDS N IDS IDS 20456S3456B
HIC 102979