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Current system
21105+4742
BU 159 AB
HD 201836


Nearby doubles
7' : 21100+4745
A 761

15' : 21092+4737
TDT2786

29' : 21105+4713
TDT2803

30' : 21090+4716
ES 512AB

31' : 21100+4811
RAO 448

34' : 21072+4744
ES 817AB

38' : 21089+4815
ARG 42AB

38' : 21077+4718
A 759

40' : 21066+4739
ES 32

40' : 21097+4820
COU2545

44' : 21063+4751
BUP9010AB

44' : 21109+4658
GIC 166AB

45' : 21129+4820
HJ 1625

47' : 21103+4828
TOI1343

47' : 21102+4828
KPP4226

49' : 21057+4748
BU 158AB

50' : 21099+4651
SMA 129

51' : 21068+4708
ES 1169

53' : 21070+4704
BRT1142

53' : 21055+4758
ES 816

55' : 21133+4655
A 884

57' : 21102+4645
SKF2396

58' : 21065+4823
BU 836AB

58' : 21088+4646
SMA 127

59' : 21158+4719
ES 514

59' : 21119+4838
HJ 1624



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 21105+4742 : COMPONENTS
 
 
  A B C D
B pa=324.5°
sep=1.03"
 
C pa=186.0°
sep=135.80"
pa=185.7°
sep=136.58"
 
D pa=155.1°
sep=13.40"
pa=154.3°
sep=14.41"
pa=9.2°
sep=124.50"
 
E pa=345.1°
sep=45.01"
pa=345.5°
sep=44.05"
pa=0.8°
sep=178.57"
pa=342.8°
sep=58.26"
 
 
21105+4742 A
 
 
Name HD 201836 Coord arcsec 2000 211030.96+474132.0 Mag 6.55 Spectral class B6IV (blue-white)
PmRA -4.00 PmDE 1.0 SAO 50536 HIP 104537
Tycho2 3592-07442-1 HD 201836 HR 8107 GC 29610
BD BD+47 3322
Tycho2
Tycho2 3592-07442-1 Pflag P RAmdeg 317.62896845 DEmdeg 47.69224640
PmRA -3.8 PmDE 0.5 E RAmdeg 4 E DEmdeg 4
E pmRA 2.4 E pmDE 2.3 EpRAm 1991.65 EpDEm 1991.60
Num 4 Q RAmdeg 1.2 Q DEmdeg 1.2 Q pmRA 1.2
Q pmDE 1.3 BTmag 6.531 E BTmag 0.014 VTmag 6.546
E VTmag 0.010 Prox 13 TYC T HIP 104537
CCDM A RAdeg 317.62900000 DEdeg 47.69223389 EpRA 1990 1.70
EpDE 1990 1.65 E RAdeg 3.6 E DEdeg 3.6 Posflg D
Corr 0.1
SAO
SAO 50536 DelFlag RA1950 PmRA1950 0.0001
DE1950 PmDE1950 -0.004 Vmag 6.4 SpType B5
Double code Source 70 CatNum 29610 DM BD+47 3322
DMcomp BDsup HD 201836 M HD 0
GC 29610 RA1950rad 5.5360899 DE1950rad 0.82880852 PmRA2000 0.0004
PmDE2000 -0.007
Hipparcos
Catalog H HIP 104537 Proxy H RAhms 21 10 30.96
DEdms +47 41 32.0 Vmag 6.46 VarFlag R Vmag G
RAdeg 317.629 DEdeg 47.6922 AstroRef A Plx 2.17
CCDM 21105+4741 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 313 Rho 1.232 HD 201836 BD BD+47 3322
CD CP Dm number +47 3322 VIred 0
SpType B6IV R SpType Coord arcsec 2000 211030.96+474132.0
Hipparcos 2
HIP 104537 Sn 15 So 3 Nc 2
RArad 5.5436718958 DErad 0.8323864908 Plx 2.36 PmRA -4.88
PmDE -2.36 E RArad 0.35 E DErad 0.36 E Plx 0.48
E pmRA 0.49 E pmDE 0.4 Hpmag 6.4628 E Hpmag 0.001
SHp 0.007 VA 0 BV 0.007 E BV 0.024
VI 0
 
 
21105+4742 B
 
 
Coord arcsec 2000 211030.90+474132.8 Mag 9.07 PmRA -4.00 PmDE 1.0
Tycho2 3592-07442-2 Calc delta mag 2.52 Calc coord yes
Tycho2
Tycho2 3592-07442-2 Pflag P RAmdeg 317.62896845 DEmdeg 47.69224640
PmRA -3.8 PmDE 0.5 E RAmdeg 4 E DEmdeg 4
E pmRA 2.4 E pmDE 2.3 EpRAm 1991.65 EpDEm 1991.60
Num 4 Q RAmdeg 1.2 Q DEmdeg 1.2 Q pmRA 1.2
Q pmDE 1.3 BTmag 9.106 E BTmag 0.018 VTmag 9.072
E VTmag 0.018 Prox 13 TYC HIP 104537
CCDM B RAdeg 317.62861167 DEdeg 47.69247778 EpRA 1990 1.71
EpDE 1990 1.66 E RAdeg 8.8 E DEdeg 9.3 Posflg D
Corr 0.1
 
 
21105+4742 C
 
 
Coord arcsec 2000 211029.55+473916.9 Mag 7.52 PmRA -5.00 PmDE -18.0
SAO 50535 Tycho2 3592-07320-1 HD 201837 DM BD+47 3321
Calc delta mag 0.97 Calc coord yes
Tycho2
Tycho2 3592-07320-1 Pflag RAmdeg 317.62014110 DEmdeg 47.65485481
PmRA -4.6 PmDE -18.0 E RAmdeg 5 E DEmdeg 5
E pmRA 1.3 E pmDE 1.3 EpRAm 1991.44 EpDEm 1991.36
Num 8 Q RAmdeg 1.6 Q DEmdeg 1.6 Q pmRA 1.7
Q pmDE 1.5 BTmag 9.149 E BTmag 0.017 VTmag 7.515
E VTmag 0.011 Prox 999 TYC T HIP
CCDM RAdeg 317.62015694 DEdeg 47.65489667 EpRA 1990 1.73
EpDE 1990 1.64 E RAdeg 4.9 E DEdeg 5.2 Posflg
Corr 0.1
SAO
SAO 50535 DelFlag RA1950 PmRA1950 -0.0018
DE1950 PmDE1950 -0.022 Vmag 7.7 SpType Mb
Double code Source 3 CatNum 1714 DM BD+47 3321
DMcomp BDsup HD 201837 M HD 0
GC RA1950rad 5.53592953 DE1950rad 0.82816236 PmRA2000 -0.0015
PmDE2000 -0.025
 
 
21105+4742 D
 
 
Coord arcsec 2000 211031.52+474119.8 Mag 13.5 Calc delta mag 6.95 Calc coord yes
 
 
21105+4742 E
 
 
Coord arcsec 2000 211029.81+474215.5 Mag 13.5 Calc delta mag 6.95 Calc coord yes