18426+5532 H 6  37AB (46 Dra)

 
 
18h 42m 37.96s +55 32' 21.8" P.A. 158 sep 147 mag 5.01,11.04 Sp B9.5pHg: dist. 104.38 pc (340.49 l.y.)
 
 
Coord 2000
18426+5532
Discov num
H 6  37
Comp
AB
Coord arcsec 2000
18 42 37.96 +55 32 21.8
Date first
1879
Date last
2015
Obs
7
Pa first
160
Pa last
158
P.A. Now (θ)
158°
Sep first
146.8
Sep last
147.0
Sep. Now (ρ)
147"
Mag pri
5.01
Mag sec
11.04
delta mag (ΔM)
6.03
Spectral class
B9.5pHg: (blue-white)
Pri motion ra
-003
Sec motion ra
+019
Pri motion dec
+023
Sec motion dec
+034
Notes
N (See Notes)
rPM=0.632
Nature of this double is uncertain.
 
 
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 2015 7 158 147.0 5.01 11.04 6.03 <===
Show 18426+5532 H 6 37 AC 1852 2015 14 340 331.2 5.01 8.24 3.23
Quadruple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
158
Precise sep
147.004
Name
46 Dra
Other name
c Dra
Constellation
Draco
SAO
31119
HIP
91755
Gaia DR2
32587997056
HD
173524
HR
7049
GC
25635
BD
BD+55 2107
Flamsteed
46 Draconis
Flamsteed name
46 Dra
Distance
104.38
Distance ly
340.49
 
 
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 AB 2000 5 158 147.0 5.01 11.04 N D 184237.96+553221.8
18426+5532 H 6 37 AB 2003 6 158 146.3 5.01 11.04 N D 184237.96+553221.8
18426+5532 H 6 37 AB 2015 7 158 147.0 5.01 11.04 B9.5pHg: N 184237.96+553221.8

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