18426+5532 H 6  37AC

 
 
18h 42m 37.96s +55 32' 21.8" P.A. 340 sep 330.8 mag 5.01,8.24 Sp B9.5pHg: dist. 104.38 pc (340.49 l.y.)
 
 
Coord 2000
18426+5532
Discov num
H 6  37
Comp
AC
Coord arcsec 2000
18 42 37.96 +55 32 21.8
Date first
1852
Date last
2007
Obs
13
Pa first
341
Pa last
340
P.A. Now (θ)
340°
Sep first
333.9
Sep last
330.8
Sep. Now (ρ)
330.8"
Mag pri
5.01
Mag sec
8.24
delta mag (ΔM)
3.23
Spectral class
B9.5pHg: (blue-white)
Pri motion ra
-003
Sec motion ra
+011
Pri motion dec
+023
Sec motion dec
+013
Notes
N Y (See Notes, Parallax indicates components are non-physical)
rPM=0.742
This double is not physical.
 
 
18426+5532 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 31119 18426+5532 ISO 7 Aa,Ab 1987 1987 1 135 0.2 5.04
Show 46 Dra 31119 18426+5532 H 6 37 AB 1879 2003 6 158 146.3 5.01 11.04 6.03
Show 31119 18426+5532 H 6 37 AC 1852 2007 13 340 330.8 5.01 8.24 3.23 <===
Quadruple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
340.4
Precise sep
330.81
Other name
c Dra
Constellation
Draco
SAO
31119
HIP
91755
HD
173524
HR
7049
GC
25635
BD
BD+55 2107
Flamsteed
46 Draconis
Flamsteed name
46 Dra
Distance
104.38
Distance ly
340.49
last precise pa
340.4
last precise sep
330.81
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18426+5532 H 6 37 AC 2007 12 340 330.8 5.01 8.24 NYD 184237.96+553221.8

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