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Doubles in session


Current system
21252+1828
COU 430 AB
HD 203991


Nearby doubles
25' : 21248+1804
FMR 235

27' : 21234+1838
GRV 459

33' : 21274+1837
BRT2495

44' : 21221+1825
UC 4459

47' : 21252+1742
BPM2372

48' : 21251+1740
BPM2371

50' : 21228+1905
ARY 69

54' : 21281+1754
RAO 456

54' : 21287+1810
HU 490AB

57' : 21212+1841
J 160

62' : 21290+1800
CVR 904

64' : 21235+1728
COU 428

66' : 21290+1906
J 579

66' : 21228+1925
BRT2494

67' : 21237+1931
COU 429AB

73' : 21278+1726
NSN 745

73' : 21284+1924
CVR 247

75' : 21236+1717
HU 369

76' : 21217+1731
BPM2364

76' : 21222+1725
BPM2365

77' : 21215+1924
J 3316

81' : 21296+1739
TSN 198

83' : 21194+1816
COU 70

84' : 21213+1724
BPM2362

88' : 21282+1943
UC 4474

89' : 21248+1956
KPP3370



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 21252+1828 : COMPONENTS
 
 
  A B
B pa=227.7°
sep=0.77"
 
C pa=98.3°
sep=59.84"
pa=97.8°
sep=60.33"
 
 
21252+1828 A
 
 
Name HD 203991 Coord arcsec 2000 212509.48+182745.4 Mag 7.95 Spectral class A0 (white)
PmRA 9.00 PmDE -5.0 SAO 107115 HIP 105753
Tycho2 1667-00465-1 HD 203991 GC 29997 BD BD+17 4577
Tycho2
Tycho2 1667-00465-1 Pflag RAmdeg 321.28948941 DEmdeg 18.46261173
PmRA 9.0 PmDE -5.2 E RAmdeg 5 E DEmdeg 5
E pmRA 0.9 E pmDE 0.9 EpRAm 1991.18 EpDEm 1991.23
Num 17 Q RAmdeg 1.2 Q DEmdeg 1.4 Q pmRA 1.2
Q pmDE 1.3 BTmag 7.813 E BTmag 0.016 VTmag 7.739
E VTmag 0.012 Prox 627 TYC T HIP 105753
CCDM AB RAdeg 321.28946806 DEdeg 18.46262361 EpRA 1990 1.72
EpDE 1990 1.80 E RAdeg 4.9 E DEdeg 5.3 Posflg P
Corr -0.1
SAO
SAO 107115 DelFlag RA1950 PmRA1950 0.0001
DE1950 PmDE1950 -0.001 Vmag 7.5 SpType A0
Double code Source 70 CatNum 29997 DM BD+17 4577
DMcomp BDsup HD 203991 M HD 0
GC 29997 RA1950rad 5.5973867 DE1950rad 0.31845771 PmRA2000 0.0001
PmDE2000 -0.004
Hipparcos
Catalog H HIP 105753 Proxy H RAhms 21 25 09.47
DEdms +18 27 45.5 Vmag 7.74 VarFlag R Vmag G
RAdeg 321.289 DEdeg 18.4626 AstroRef A Plx 5.33
CCDM 21252+1828 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 235 Rho 0.603 HD 203991 BD BD+17 4577
CD CP Dm number +17 4577 VIred 0.06
SpType A0 R SpType Coord arcsec 2000 212509.47+182745.5
Hipparcos 2
HIP 105753 Sn 15 So 3 Nc 2
RArad 5.6075591952 DErad 0.3222336833 Plx 5.64 PmRA 7.89
PmDE -6.15 E RArad 0.63 E DErad 0.72 E Plx 0.91
E pmRA 0.95 E pmDE 0.79 Hpmag 7.7519 E Hpmag 0.0012
SHp 0.012 VA 0 BV 0.04 E BV 0.015
VI 0.06
CCDM
Ccdm 21252+1828 RComp Comp A Note1
Note2 Discov num DRAs -2.52 DDEs -14.2
R dRAs 10 Year Theta Rho
Obs 2 Vmag 7.5 Sp A0 PmNote *
PmRA 10 PmDE 3 Dm number +17 4577 Cat1 BD
Name2 +18 2170 Cat2 AGK2/3 HD 203991 M HD
ADS BDS M ADS BDS N IDS IDS 21205N1802A
HIC 105753
 
 
21252+1828 B
 
 
Coord arcsec 2000 212509.44+182744.9 Mag 9.41 PmRA 9.00 PmDE -5.0
Calc delta mag 1.46 Calc coord yes
CCDM
Ccdm 21252+1828 RComp Comp B Note1
Note2 Discov num COU 430 DRAs DDEs
R dRAs Year 1969 Theta 239 Rho 0.5
Obs 1 Vmag 8.4 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS M ADS BDS N IDS IDS 21205N1802B
HIC 105753
 
 
21252+1828 C
 
 
Coord arcsec 2000 212513.64+182736.7 Mag 9.96 PmRA 23.00 PmDE 3.0
Tycho2 1667-00072-1 Calc delta mag 2.01 Calc coord yes
Tycho2
Tycho2 1667-00072-1 Pflag RAmdeg 321.30768809 DEmdeg 18.46013184
PmRA 21.5 PmDE -0.3 E RAmdeg 23 E DEmdeg 22
E pmRA 1.1 E pmDE 1.0 EpRAm 1982.36 EpDEm 1983.70
Num 9 Q RAmdeg 1.2 Q DEmdeg 1.1 Q pmRA 1.1
Q pmDE 1.1 BTmag 10.542 E BTmag 0.046 VTmag 9.958
E VTmag 0.039 Prox 627 TYC T HIP
CCDM RAdeg 321.30763389 DEdeg 18.46013083 EpRA 1990 1.60
EpDE 1990 1.81 E RAdeg 28.8 E DEdeg 26.3 Posflg
Corr -0.3