20522+1656 J  3116BC

 
 
20h 52m 12.84s +16 57' 09.9" P.A. 143 sep 6 mag 13.30,14.80
 
 
Coord 2000
20522+1656
Discov num
J  3116
Comp
BC
Coord arcsec 2000
20 52 12.84 +16 57 09.9
Date first
1944
Date last
2015
Obs
4
Pa first
130
Pa last
143
P.A. Now (θ)
143°
Sep first
4.0
Sep last
6.0
Sep. Now (ρ)
6"
Mag pri
13.30
Mag sec
14.80
delta mag (ΔM)
1.5
Spectral class
Pri motion ra
+006
Sec motion ra
-002
Pri motion dec
+014
Sec motion dec
-022
Notes
rPM=1.669
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 106591 20522+1656 J 3116 AB 1944 2015 5 39 73.3 8.77 12.88 4.11
Show 106591 20522+1656 J 3116 BC 1944 2015 4 143 6.0 13.30 14.80 1.50 <===
Triple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
142.6
Precise sep
6.024
Constellation
Delphinus
SAO
106591
last precise pa
142.6
last precise sep
6.024
 
 
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 BC 1944 1 130 3.0 12.20 14.70 205230.00+165600.0
20522+1656 J 3116 BC 1997 2 139 5.9 13.30 14.80 D 205212.84+165709.9
20522+1656 J 3116 BC 2001 3 139 5.9 13.30 14.80 D 205212.84+165709.9
20522+1656 J 3116 BC 2015 4 143 6.0 13.30 14.80 205212.84+165709.9

If you need more information about this double, apply for a data request form to the WDS.