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Doubles in session


Current system
20456+4621
HDS 2955


Nearby doubles
16' : 20466+4632
KUI 101

20' : 20437+4619
HO 140

22' : 20438+4610
TDT2503

30' : 20431+4637
BRT2273

31' : 20427+4627
TDS1092

32' : 20464+4551
CVR 230

36' : 20437+4651
TDS1096

38' : 20489+4607
HJ 1581

41' : 20494+4613
ES 670

42' : 20482+4653
ES 669

47' : 20423+4549
STT 411AB

49' : 20499+4640
BU 250

49' : 20501+4635
ES 671

50' : 20473+4535
HO 280

55' : 20508+4628
BRT2276AB

56' : 20434+4712
TDT2496

56' : 20489+4537
HDS2965

57' : 20443+4716
TDT2509

57' : 20450+4718
BRT2274

61' : 20421+4532
BKO 157

62' : 20420+4532
BRT2271

62' : 20440+4521
KPP3361

67' : 20490+4525
SMA 120

68' : 20427+4521
ES 1270

68' : 20485+4519
LDS2456

68' : 20492+4525
COU2646



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 20456+4621 : COMPONENTS
 
 
  A
B pa=296.4°
sep=0.28"
 
 
20456+4621 A
 
 
Componente originario normalizzato AB Coord arcsec 2000 204535.28+462102.1 Mag 9.25 Spectral class O9V (blue)
PmRA -2.00 PmDE -5.0 HIP 102449 Tycho2 3574-00466-1
BD BD+45 3260
Tycho2
Tycho2 3574-00466-1 Pflag RAmdeg 311.39699720 DEmdeg 46.35057377
PmRA -2.8 PmDE -5.3 E RAmdeg 10 E DEmdeg 10
E pmRA 1.1 E pmDE 1.1 EpRAm 1990.10 EpDEm 1990.43
Num 9 Q RAmdeg 1.3 Q DEmdeg 1.0 Q pmRA 1.2
Q pmDE 1.0 BTmag 9.660 E BTmag 0.022 VTmag 9.150
E VTmag 0.017 Prox 999 TYC T HIP 102449
CCDM AB RAdeg 311.39700611 DEdeg 46.35058528 EpRA 1990 1.65
EpDE 1990 1.72 E RAdeg 11.3 E DEdeg 10.3 Posflg P
Corr 0.1
Hipparcos
Catalog H HIP 102449 Proxy H RAhms 20 45 35.28
DEdms +46 21 02.1 Vmag 9.07 VarFlag R Vmag G
RAdeg 311.397 DEdeg 46.3506 AstroRef A Plx 0.92
CCDM 20456+4621 N CCDM H Nsys 1 Ncomp 2
MultFlag C Source Qual C M HIP AB
Theta 290 Rho 0.352 HD BD BD+45 3260
CD CP Dm number +45 3260 VIred 0.57
SpType O9V R SpType Coord arcsec 2000 204535.28+462102.1
Hipparcos 2
HIP 102449 Sn 15 So 3 Nc 2
RArad 5.4349030914 DErad 0.8089703577 Plx 0.77 PmRA -3.05
PmDE -4.83 E RArad 0.73 E DErad 0.68 E Plx 0.86
E pmRA 0.98 E pmDE 0.71 Hpmag 9.1891 E Hpmag 0.0015
SHp 0.017 VA 0 BV 0.5 E BV 0.014
VI 0.57
CCDM
Ccdm 20456+4621 RComp Comp A Note1
Note2 Discov num DRAs -0.72 DDEs 2.1
R dRAs 82 Year Theta Rho
Obs 2 Vmag 9.2 Sp O9 PmNote *
PmRA -2 PmDE -5 Dm number +45 3260 Cat1 BD
Name2 +46 1682 Cat2 AGK2/3 HD M HD
ADS BDS M ADS BDS N IDS IDS
HIC 102449
 
 
20456+4621 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 204535.26+462102.2 Mag 12.42 Calc delta mag 3.17
Calc coord yes
CCDM
Ccdm 20456+4621 RComp Comp B Note1
Note2 Discov num HDS DRAs -0.75 DDEs 2.2
R dRAs 82 Year 1991 Theta 290 Rho 0.4
Obs 1 Vmag 12.4 Sp PmNote *
PmRA -2 PmDE -5 Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS M ADS BDS N IDS IDS
HIC 102449