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Current system
20511+5125
BU 155 AB
HD 198834


Nearby doubles
37' : 20487+5155
STF2732

41' : 20483+5054
ES 998

41' : 20496+5047
HDS2968

43' : 20472+5148
BU 365

51' : 20499+5036
CBL 87

61' : 20486+5029
BU 366AB

63' : 20574+5104
ES 999

66' : 20564+5044
BU 1137

67' : 20479+5224
ES 93

68' : 20457+5040
STT 412AB

79' : 20441+5043
LEP 171

79' : 20496+5008
ES 94AB

86' : 20449+5023
SKF2395

87' : 20429+5206
ES 995

87' : 20435+5217
TVB 6

91' : 20585+5028
STF2741AB

91' : 20465+5005
HDS2958

92' : 20570+5013
TDT2651

92' : 20466+5004
HDS2959

95' : 20460+5247
ES 996

99' : 20566+5250
A 1437

107' : 20422+5020
BU 675AB

107' : 20427+5238
A 1683

108' : 20457+4951
TDT2521

108' : 20444+5253
MLR 643

108' : 20595+5013
BU 68



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Binocular doubles
Binary Systems
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Multiple Systems
Neglected List I
Neglected List II
Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.
 
 
WDS 20511+5125 : COMPONENTS
 
 
  A B C
B pa=27.9°
sep=0.60"
 
C pa=27.6°
sep=12.76"
pa=27.6°
sep=12.16"
 
D pa=34.3°
sep=156.57"
pa=34.4°
sep=155.97"
pa=34.9°
sep=143.90"
 
 
20511+5125 A
 
 
Name HD 198834 Coord arcsec 2000 205105.41+512501.7 Mag 7.36 Spectral class A9IV (white)
PmRA 40.00 PmDE 41.0 SAO 32933 HIP 102921
Tycho2 3587-01042-1 HD 198834 GC 29096 BD BD+50 3215
Tycho2
Tycho2 3587-01042-1 Pflag P RAmdeg 312.77275405 DEmdeg 51.41728332
PmRA 39.5 PmDE 40.6 E RAmdeg 5 E DEmdeg 5
E pmRA 1.4 E pmDE 1.5 EpRAm 1991.38 EpDEm 1991.51
Num 8 Q RAmdeg 1.4 Q DEmdeg 1.4 Q pmRA 1.4
Q pmDE 1.3 BTmag 7.625 E BTmag 0.015 VTmag 7.356
E VTmag 0.011 Prox 8 TYC T HIP 102921
CCDM A RAdeg 312.77256056 DEdeg 51.41715250 EpRA 1990 1.59
EpDE 1990 1.69 E RAdeg 4.5 E DEdeg 4.6 Posflg D
Corr 0.0
SAO
SAO 32933 DelFlag RA1950 PmRA1950 0.0034
DE1950 PmDE1950 0.051 Vmag 6.8 SpType F0
Double code Source 70 CatNum 29096 DM BD+50 3215
DMcomp BDsup HD 198834 M HD 0
GC 29096 RA1950rad 5.45218178 DE1950rad 0.89410506 PmRA2000 0.0038
PmDE2000 0.049
Hipparcos
Catalog H HIP 102921 Proxy H RAhms 20 51 05.41
DEdms +51 25 01.7 Vmag 6.91 VarFlag R Vmag G
RAdeg 312.773 DEdeg 51.4171 AstroRef A Plx 8.27
CCDM 20512+5126 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 38 Rho 0.81 HD 198834 BD BD+50 3215
CD CP Dm number +50 3215 VIred 0.35
SpType F0 R SpType Coord arcsec 2000 205105.41+512501.7
Hipparcos 2
HIP 102921 Sn 15 So 3 Nc 2
RArad 5.4589107484 DErad 0.8973984518 Plx 8.03 PmRA 38.96
PmDE 42.33 E RArad 0.61 E DErad 0.72 E Plx 0.71
E pmRA 0.76 E pmDE 0.8 Hpmag 6.9766 E Hpmag 0.0009
SHp 0.008 VA 0 BV 0.303 E BV 0.015
VI 0.35
 
 
20511+5125 B
 
 
Coord arcsec 2000 205105.44+512502.2 Mag 8.13 PmRA 40.00 PmDE 41.0
Tycho2 3587-01042-2 Calc delta mag 0.77 Calc coord yes
Tycho2
Tycho2 3587-01042-2 Pflag P RAmdeg 312.77275405 DEmdeg 51.41728332
PmRA 39.5 PmDE 40.6 E RAmdeg 5 E DEmdeg 5
E pmRA 1.4 E pmDE 1.5 EpRAm 1991.38 EpDEm 1991.51
Num 8 Q RAmdeg 1.4 Q DEmdeg 1.4 Q pmRA 1.4
Q pmDE 1.3 BTmag 8.575 E BTmag 0.018 VTmag 8.131
E VTmag 0.013 Prox 8 TYC T HIP 102921
CCDM B RAdeg 312.77277944 DEdeg 51.41732944 EpRA 1990 1.60
EpDE 1990 1.67 E RAdeg 6.5 E DEdeg 6.7 Posflg D
Corr 0.0
 
 
20511+5125 C
 
 
Coord arcsec 2000 205106.04+512513.0 Mag 12.6 Calc delta mag 5.24 Calc coord yes
 
 
20511+5125 D
 
 
Coord arcsec 2000 205114.85+512711.0 Mag 11.5 PmRA -2.00 PmDE -5.0
Calc delta mag 4.14 Calc coord yes