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Current system
18309+3840
STF 2338 CE


Nearby doubles
12' : 18316+3846
COU1604

19' : 18310+3857
SLE 187AB

27' : 18329+3850
STTA171AB

38' : 18298+3803
HU 1189

42' : 18343+3832
SLE 210

43' : 18272+3847
MLB 854

53' : 18301+3746
UC 3595

53' : 18297+3929
TDT 910

54' : 18298+3930
SLE 182

58' : 18323+3933
UC 3603

64' : 18335+3934
SLE 208AB

66' : 18362+3858
ES 2571

67' : 18367+3911
OL 14AB

69' : 18367+3841
H 4 59AB

71' : 18366+3859
MLB 755

72' : 18369+3846
H 5 39AB
Vega

77' : 18348+3939
SLE 215

78' : 18273+3944
TDT 881

78' : 18334+3727
ES 2481

80' : 18337+3726
MLB 937

82' : 18240+3844
HO 432AB

83' : 18239+3824
HEI 803

86' : 18376+3806
ES 2019AB

86' : 18237+3821
HO 431

90' : 18300+3710
BU 420AB

90' : 18385+3837
SLE 230AB



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 18309+3840 : COMPONENTS
 
 
  A B C D
B pa=307.1°
sep=10.20"
 
C pa=206.5°
sep=76.57"
pa=199.2°
sep=79.08"
 
D pa=210.2°
sep=86.05"
pa=203.6°
sep=87.87"
pa=237.0°
sep=10.80"
 
E pa=159.1°
sep=49.71"
pa=153.8°
sep=58.62"
pa=67.0°
sep=56.47"
pa=65.4°
sep=67.13"
 
 
18309+3840 A
 
 
Coord arcsec 2000 183054.75+383933.8 Mag 9.3 Spectral class K2 (yellow-orange) PmRA -11.00
PmDE -7.0 Tycho2 3105-00683-1
Tycho2
Tycho2 3105-00683-1 Pflag RAmdeg 277.72815047 DEmdeg 38.65939668
PmRA -14.1 PmDE -4.7 E RAmdeg 20 E DEmdeg 21
E pmRA 2.1 E pmDE 2.0 EpRAm 1990.01 EpDEm 1989.69
Num 6 Q RAmdeg 0.9 Q DEmdeg 1.4 Q pmRA 1.0
Q pmDE 1.4 BTmag 10.953 E BTmag 0.052 VTmag 9.616
E VTmag 0.025 Prox 766 TYC T HIP
CCDM RAdeg 277.72819194 DEdeg 38.65940750 EpRA 1990 1.62
EpDE 1990 1.61 E RAdeg 19.5 E DEdeg 20.8 Posflg
Corr 0.1
 
 
18309+3840 B
 
 
Coord arcsec 2000 183054.06+383940.0 Mag 11.2 PmRA 0.00 PmDE -9.0
Calc delta mag 1.9 Calc coord yes
 
 
18309+3840 C
 
 
Var name KP Lyr Coord arcsec 2000 183051.83+383825.3 Coord calc 183051.83+383825.3 Mag 9.62
Spectral class Ma (red) PmRA 2.00 PmDE -7.0 Tycho2 3105-00726-1
Calc delta mag 0.32
Tycho2
Tycho2 3105-00726-1 Pflag RAmdeg 277.71598541 DEmdeg 38.64036481
PmRA -1.9 PmDE -4.4 E RAmdeg 15 E DEmdeg 16
E pmRA 2.0 E pmDE 2.0 EpRAm 1989.99 EpDEm 1990.05
Num 8 Q RAmdeg 1.1 Q DEmdeg 1.7 Q pmRA 1.0
Q pmDE 1.6 BTmag 11.050 E BTmag 0.055 VTmag 9.298
E VTmag 0.020 Prox 766 TYC T HIP
CCDM RAdeg 277.71599167 DEdeg 38.64037417 EpRA 1990 1.63
EpDE 1990 1.61 E RAdeg 15.8 E DEdeg 16.9 Posflg
Corr 0.1
 
 
18309+3840 D
 
 
Coord arcsec 2000 183051.06+383819.4 Mag 14.8 Calc delta mag 5.5 Calc coord yes
 
 
18309+3840 E
 
 
Coord arcsec 2000 183056.27+383847.4 Mag 13 Spectral class V PmRA 6.00
PmDE 9.0 Calc delta mag 3.7 Calc coord yes