18554+1118 SRW   7AC

 
 
18h 55m 24.61s +11 17' 16.5" P.A. 322.00 sep 29.1 mag 10.73,11.56 Sp A:+A:
 
 
Coord 2000
18554+1118
Discov num
SRW   7
Comp
AC
Coord arcsec 2000
18 55 24.61 +11 17 16.5
Date first
1907
Date last
2015
Obs
14
Pa first
321
Pa last
322
P.A. Now (θ)
322°
Sep first
28.9
Sep last
29.1
Sep. Now (ρ)
29.1"
Mag pri
10.73
Mag sec
11.56
delta mag (ΔM)
0.83
Spectral class
A:+A: (white/white)
Pri motion ra
-001
Sec motion ra
+003
Pri motion dec
-006
Sec motion dec
-000
Notes
rPM=1.185
This double is not physical.
 
 
18554+1118 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 18 55 25 +11 17 16 SRW 7 AB 2015 14 24 26.4 10.73 11.00 0.27
Show 18 55 25 +11 17 16 SRW 7 AC 2015 14 322 29.1 10.73 11.56 0.83 <===
Show 18 55 25 +11 17 41 SRW 7 BC 2015 15 267 28.6 11.00 11.56 0.56
Triple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
321.7
Precise sep
29.111
Constellation
Hydra
Tycho2
1047-02261-1
Gaia DR2
4312129469928184960
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18554+1118 SRW 7 AC 2010 9 322 29.0 10.70 11.60 A:+A: 185524.61+111716.5
18554+1118 SRW 7 AC 2015 10 322 29.1 10.73 11.56 A:+A: 185524.61+111716.5

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