18557+1254 COG   1AC

 
 
18h 55m 43.67s +12 54' 30.1" P.A. 53 sep 38.6 mag 9.28,10.26 Sp A5V
 
 
Coord 2000
18557+1254
Discov num
COG   1
Comp
AC
Coord arcsec 2000
18 55 43.67 +12 54 30.1
Date first
1893
Date last
2015
Obs
15
Pa first
55
Pa last
53
P.A. Now (θ)
53°
Sep first
38.9
Sep last
38.6
Sep. Now (ρ)
38.6"
Mag pri
9.28
Mag sec
10.26
delta mag (ΔM)
0.98
Spectral class
A5V (white)
Pri motion ra
+009
Sec motion ra
+017
Pri motion dec
-005
Sec motion dec
-012
Notes
N U (See Notes, Proper motion indicates non-physical)
rPM=0.511
This double is not physical.
 
 
18557+1254 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 18557+1254 COG 1 AB 1903 2015 9 284 26.2 9.28 11.92 2.64
Show 18557+1254 COG 1 AC 1893 2015 15 53 38.6 9.28 10.26 0.98 <===
Show 18557+1254 ABH 107 AE 1988 2002 5 58 107.9 9.28 12.20 2.92
Show 18557+1254 ABH 107 AF 1904 2002 8 107 123.0 9.28 11.23 1.95
Show 18557+1254 ABH 107 AG 1988 2002 5 251 97.6 9.28 13.59 4.31
Show 18557+1254 COG 1 CD 1904 2002 15 315 3.4 10.26 11.96 1.70
Septuple system
7 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
52.9
Precise sep
38.55
Constellation
Hercules
Tycho2
1047-01718-1
HD
230093
last precise pa
52.9
last precise sep
38.55
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18557+1254 COG 1 AC 2004 12 54 38.5 9.28 10.26 A5V D 185543.67+125430.1
18557+1254 COG 1 AC 2015 15 53 38.6 9.28 10.26 A5V NU 185543.67+125430.1

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