18546+3656 ELS   7AB (12 Lyr)

 
 
18h 54m 37.55s +36 55' 48.5" P.A. 338 sep 8.5 mag 13.60,13.80
 
 
Coord 2000
18546+3656
Discov num
ELS   7
Comp
AB
Coord arcsec 2000
18 54 37.55 +36 55 48.5
Date first
1924
Date last
2015
Obs
7
Pa first
340
Pa last
338
P.A. Now (θ)
338°
Sep first
8.7
Sep last
8.5
Sep. Now (ρ)
8.5"
Mag pri
13.60
Mag sec
13.80
delta mag (ΔM)
0.2
Spectral class
Pri motion ra
+031
Sec motion ra
-028
Pri motion dec
-112
Sec motion dec
+042
Notes
rPM=1.419
This double is not physical.
 
 
18546+3656 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 12 Lyr 18546+3656 ELS 7 AB 1924 2015 7 338 8.5 13.60 13.80 0.20 <===
Show 18546+3656 ELS 7 AC 1924 2015 6 121 10.3 13.60 16.00 2.40
Triple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
338.1
Precise sep
8.492
Name
12 Lyr
Constellation
Lyra
SAO
67559
Gaia DR2
10269470208
HD
175588
HR
7139
DM
BD+36 3319
Flamsteed
12 Lyrae
Flamsteed name
12 Lyr
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18546+3656 ELS 7 AB 2007 4 339 8.5 11.00 15.79 185410.00+365600.0
18546+3656 ELS 7 AB 2012 6 339 8.5 13.60 13.80 185437.55+365548.5
18546+3656 ELS 7 AB 2015 7 338 8.5 13.60 13.80 185437.55+365548.5

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