18564+4530 JKA  16BD

 
 
18h 56m 21.26s +45 30' 53.1" P.A. 342 sep 549.9 mag 9.30,11.80
 
 
Coord 2000
18564+4530
Discov num
JKA  16
Comp
BD
Coord arcsec 2000
18 56 21.26 +45 30 53.1
Date first
1894
Date last
2003
Obs
5
Pa first
343
Pa last
342
P.A. Now (θ)
342°
Sep first
549.6
Sep last
549.9
Sep. Now (ρ)
549.9"
Mag pri
9.30
Mag sec
11.80
delta mag (ΔM)
2.5
Spectral class
Pri motion ra
+023
Sec motion ra
+029
Pri motion dec
+060
Sec motion dec
+065
Notes
V (Proper motion indicates physical)
rPM=0.11 (< 0.3, Physical double)
This double is physical.
 
 
18564+4530 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 18564+4530 HJ 1356 AB 1828 2015 21 342 29.3 8.39 9.35 0.96
Show 18564+4530 RAO 92 AC 2014 2014 1 292 3.6 8.20 15.00 6.80
Show 18564+4530 JKA 16 BD 1894 2003 5 342 549.9 9.30 11.80 2.50 <===
Quadruple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
341.9
Precise sep
549.917
Constellation
Lyra
last precise pa
341.9
last precise sep
549.917
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18564+4530 JKA 16 BD 2003 5 342 549.9 9.30 11.80 V 185621.26+453053.1

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