20522+1656 J  3116AB

 
 
20h 52m 09.60s +16 56' 13.0" P.A. 39 sep 73.3 mag 8.77,12.88 Sp F5
 
 
Coord 2000
20522+1656
Discov num
J  3116
Comp
AB
Coord arcsec 2000
20 52 09.60 +16 56 13.0
Date first
1944
Date last
2001
Obs
4
Pa first
40
Pa last
39
P.A. Now (θ)
39°
Sep first
80.0
Sep last
73.3
Sep. Now (ρ)
73.3"
Mag pri
8.77
Mag sec
12.88
delta mag (ΔM)
4.11
Spectral class
F5 (yellow-white)
Pri motion ra
+040
Sec motion ra
+006
Pri motion dec
+002
Sec motion dec
+014
Notes
rPM=0.9
This double is not physical.
 
 
20522+1656 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 20522+1656 J 3116 AB 1944 2001 4 39 73.3 8.77 12.88 4.11 <===
Show 20522+1656 J 3116 BC 1944 2001 3 139 5.9 13.30 14.80 1.50
Triple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
39.2
Precise sep
73.344
Constellation
Delphinus
last precise pa
39.2
last precise sep
73.344
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20522+1656 J 3116 AB 1944 2 40 80.0 8.77 12.30 F5 205209.59+165613.0
20522+1656 J 3116 AB 1997 2 39 73.5 8.77 13.30 F5 D 205209.60+165613.0
20522+1656 J 3116 AB 1998 3 39 73.5 8.77 13.30 F5 D 205209.60+165613.0
20522+1656 J 3116 AB 2001 4 39 73.3 8.77 13.30 F5 D 205209.60+165613.0

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