18547+2239 BU  646AC

 
 
18h 54m 44.88s +22 38' 42.3" P.A. 23 sep 36.9 mag 4.59,11.10 Sp G4III
 
 
Coord 2000
18547+2239
Discov num
BU  646
Comp
AC
Coord arcsec 2000
18 54 44.88 +22 38 42.3
Date first
1878
Date last
2001
Obs
6
Pa first
25
Pa last
23
P.A. Now (θ)
23°
Sep first
40.7
Sep last
36.9
Sep. Now (ρ)
36.9"
Mag pri
4.59
Mag sec
11.10
delta mag (ΔM)
6.51
Spectral class
G4III (yellow)
Pri motion ra
+007
Sec motion ra
Pri motion dec
+001
Sec motion dec
Notes
N (See Notes)
Nature of this double is uncertain.
 
 
18547+2239 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 86567 18547+2239 MKT 9 Aa,Ab 1990 2004 42 271 0.0 4.59 Y
Show 113 Her 86567 18547+2239 BU 646 AB 1878 2001 9 37 34.4 4.59 11.10 6.51
Show 18547+2239 BU 646 AC 1878 2001 6 23 36.9 4.59 11.10 6.51 <===
Show 18547+2239 BU 646 BC 1877 2013 7 316 9.4 11.10 11.10 0.00
Quadruple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
23.4
Precise sep
36.889
Constellation
Hercules
last precise pa
23.4
last precise sep
36.889
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18547+2239 BU 646 AC 1999 5 23 37.7 4.59 11.10 G4III N D 185444.88+223842.3
18547+2239 BU 646 AC 2001 6 23 36.9 4.59 11.10 G4III N D 185444.88+223842.3

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