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Current system
18428+5938
STF 2398 AB
HD 173739


Nearby doubles
26' : 18401+5922
UC 3633

28' : 18449+5916
UC 3661

28' : 18459+5924
MLB1079AB

29' : 18437+6005
STI 859

31' : 18392+5925
TDT 975

37' : 18469+5920
STF2410

50' : 18414+5849
STI2381

58' : 18432+5840
TDT1017

61' : 18348+5944
TDS 930

62' : 18439+6039
ES 189AB

64' : 18355+6010
STI 854

66' : 18512+5923
STF2420AB

67' : 18459+6040
TDT1041

70' : 18416+6047
STI 857

70' : 18519+5948
STI 865

72' : 18520+5951
STI 866

73' : 18384+6043
HJ 2836AB

74' : 18524+5938
STI 867

74' : 18417+6051
STI 858

78' : 18483+6044
LDS2751

80' : 18337+6019
FOX 83

83' : 18478+5826
STI2387

86' : 18443+6103
STF2403

86' : 18399+5815
A 251AB

87' : 18537+6005
TDT1117

89' : 18334+5846
STF2353



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 18428+5938 : COMPONENTS
 
 
  A B C
B pa=172.9°
sep=12.90"
 
C pa=168.4°
sep=205.09"
pa=168.1°
sep=192.23"
 
D pa=125.8°
sep=58.54"
pa=115.0°
sep=50.67"
pa=2.2°
sep=166.81"
 
 
18428+5938 A
 
 
Name HD 173739 Coord arcsec 2000 184246.69+593749.4 Mag 9.11 Spectral class M3V (red)
PmRA -133.00 PmDE 180.0 SAO 31128 HIP 91768
Tycho2 3930-01791-1 HD 173739 GC 25648 BD BD+59 1915
Tycho2
Tycho2 3930-01791-1 Pflag X RAmdeg DEmdeg
PmRA PmDE E RAmdeg E DEmdeg
E pmRA E pmDE EpRAm EpDEm
Num Q RAmdeg Q DEmdeg Q pmRA
Q pmDE BTmag 10.897 E BTmag 0.048 VTmag 9.109
E VTmag 0.018 Prox 134 TYC T HIP 91768
CCDM A RAdeg 280.70069389 DEdeg 59.62615083 EpRA 1990 1.54
EpDE 1990 1.52 E RAdeg 14.2 E DEdeg 13.5 Posflg
Corr 0.0
SAO
SAO 31128 DelFlag RA1950 PmRA1950 -0.1751
DE1950 PmDE1950 1.869 Vmag 9.3 SpType K5
Double code Source 70 CatNum 25648 DM BD+59 1915
DMcomp A BDsup HD 173739 M HD 0
GC 25648 RA1950rad 4.89653224 DE1950rad 1.03941897 PmRA2000 -0.1772
PmDE2000 1.855
Hipparcos
Catalog H HIP 91768 Proxy RAhms 18 42 48.22
DEdms +59 37 33.7 Vmag 8.94 VarFlag R Vmag G
RAdeg 280.701 DEdeg 59.626 AstroRef A Plx 280.28
CCDM 18428+5937 N CCDM I Nsys 2 Ncomp 1
MultFlag C Source P Qual A M HIP
Theta Rho HD 173739 BD BD+59 1915
CD CP Dm number +59 1915 VIred 2.1
SpType K5 R SpType Coord arcsec 2000 184248.22+593733.7
Hipparcos 2
HIP 91768 Sn 95 So 3 Nc 1
RArad 4.8991549358 DErad 1.0406702983 Plx 280.18 PmRA -1332.03
PmDE 1807.48 E RArad 2.08 E DErad 1.97 E Plx 2.18
E pmRA 2.23 E pmDE 2.75 Hpmag 8.9218 E Hpmag 0.0212
SHp 0.12 VA 0 BV 1.504 E BV 0.008
VI 2.1
 
 
18428+5938 B
 
 
Coord arcsec 2000 184246.90+593736.6 Coord calc 184246.90+593736.6 Mag 9.96 Spectral class M3.5V (red)
PmRA -139.00 PmDE 185.0 SAO 31129 HIP 91772
Tycho2 3930-01791-2 HD 173740 GC 25649 DM BD+59 1915
Calc delta mag 0.85
Tycho2
Tycho2 3930-01791-2 Pflag X RAmdeg DEmdeg
PmRA PmDE E RAmdeg E DEmdeg
E pmRA E pmDE EpRAm EpDEm
Num Q RAmdeg Q DEmdeg Q pmRA
Q pmDE BTmag 11.809 E BTmag 0.090 VTmag 9.964
E VTmag 0.032 Prox 134 TYC T HIP 91772
CCDM B RAdeg 280.70186583 DEdeg 59.62248833 EpRA 1990 1.58
EpDE 1990 1.48 E RAdeg 27.2 E DEdeg 29.0 Posflg
Corr 0.0
SAO
SAO 31129 DelFlag RA1950 PmRA1950 -0.1794
DE1950 PmDE1950 1.818 Vmag 9.8 SpType K5
Double code Source 70 CatNum 25649 DM BD+59 1915
DMcomp B BDsup HD 173740 M HD 0
GC 25649 RA1950rad 4.89658561 DE1950rad 1.03933661 PmRA2000 -0.1815
PmDE2000 1.804
Hipparcos
Catalog H HIP 91772 Proxy RAhms 18 42 48.51
DEdms +59 37 20.5 Vmag 9.7 VarFlag R Vmag G
RAdeg 280.702 DEdeg 59.6224 AstroRef B Plx 284.48
CCDM 18428+5937 N CCDM I Nsys 2 Ncomp 1
MultFlag C Source I Qual A M HIP
Theta Rho HD 173740 BD
CD CP Dm number VIred 2.49
SpType K5 R SpType Coord arcsec 2000 184248.51+593720.5
Hipparcos 2
HIP 91772 Sn 95 So 3 Nc 1
RArad 4.8991763639 DErad 1.0406065959 Plx 289.48 PmRA -1338.68
PmDE 1809.15 E RArad 3.16 E DErad 3.04 E Plx 3.21
E pmRA 3.29 E pmDE 4.06 Hpmag 9.9964 E Hpmag 0.0474
SHp 0 VA 0 BV 1.561 E BV 0.005
VI 2.49
 
 
18428+5938 C
 
 
Coord arcsec 2000 184252.13+593428.5 Mag 12.24 PmRA -1.00 PmDE -1.0
Calc delta mag 3.13 Calc coord yes
 
 
18428+5938 D
 
 
Coord arcsec 2000 184252.95+593715.2 Mag 13.5 PmRA -1.00 PmDE -1.0
Calc delta mag 4.39 Calc coord yes