20522+1656 J  3116BC

 
 
20h 52m 12.84s +16 57' 09.9" P.A. 139 sep 5.9 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
2001
Obs
3
Pa first
130
Pa last
139
P.A. Now (θ)
139°
Sep first
4.0
Sep last
5.9
Sep. Now (ρ)
5.9"
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 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
138.9
Precise sep
5.91
Cdsa2 id
J 3116 BC
Constellation
Delphinus
Ra deg
20.870233333333335
De deg
16.952749999999998
last precise pa
138.9
last precise sep
5.91
 
 
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

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