18306+2805 ES  476AC

 
 
18h 30m 36.44s +28 04' 52.1" P.A. 325 sep 28.7 mag 11.00,12.00 Sp F5
 
 
Coord 2000
18306+2805
Discov num
ES  476
Comp
AC
Coord arcsec 2000
18 30 36.44 +28 04 52.1
Date first
1897
Date last
2002
Obs
4
Pa first
324
Pa last
325
P.A. Now (θ)
325°
Sep first
28.3
Sep last
28.7
Sep. Now (ρ)
28.7"
Mag pri
11.00
Mag sec
12.00
delta mag (ΔM)
1
Spectral class
F5 (yellow-white)
Pri motion ra
+006
Sec motion ra
-001
Pri motion dec
-038
Sec motion dec
+000
Notes
N (See Notes)
rPM=1.004
This double is not physical.
 
 
18306+2805 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 18306+2805 ES 476 AB 1907 2003 8 347 2.8 11.00 11.60 0.60
Show 18306+2805 ES 476 AC 1897 2002 4 325 28.7 11.00 12.00 1.00 <===
Triple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
324.7
Precise sep
28.733
Constellation
Lyra
Tycho2
2114-00090-1
last precise pa
324.7
last precise sep
28.733
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18306+2805 ES 476 AC 2000 3 324 27.8 11.00 12.00 F5 N D 183036.44+280452.1
18306+2805 ES 476 AC 2002 4 325 28.7 11.00 12.00 F5 N D 183036.44+280452.1

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