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 dist. 763.36 pc (2490.08 l.y.)
 
 
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
16
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 104265 18557+1254 COG 1 AB 1903 2015 10 284 26.2 9.28 11.92 2.64
Show 104265 18557+1254 COG 1 AC 1893 2015 16 53 38.6 9.28 10.26 0.98 <===
Show 104265 18557+1254 ABH 107 AE 1988 2015 6 58 107.5 9.28 12.20 2.92
Show 104265 18557+1254 ABH 107 AF 1904 2015 9 107 122.6 9.28 11.23 1.95
Show 104265 18557+1254 ABH 107 AG 1988 2015 6 251 97.8 9.28 13.59 4.31
Show 104265 18557+1254 COG 1 CD 1904 2015 16 316 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
SAO
104265
HIP
92898
Tycho2
1047-01718-1
Gaia DR2
4505977871027974528
HD
230093
BD
BD+12 3722
Distance
763.36
Distance ly
2490.08
 
 
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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