20311+1648 ROE  14AB

 
 
20h 31m 03.18s +16 48' 41.3" P.A. 262 sep 7 mag 11.50,12.60
 
 
Coord 2000
20311+1648
Discov num
ROE  14
Comp
AB
Coord arcsec 2000
20 31 03.18 +16 48 41.3
Date first
1909
Date last
2015
Obs
10
Pa first
259
Pa last
262
P.A. Now (θ)
262°
Sep first
7.0
Sep last
7.0
Sep. Now (ρ)
7"
Mag pri
11.50
Mag sec
12.60
delta mag (ΔM)
1.1
Spectral class
Pri motion ra
+020
Sec motion ra
-008
Pri motion dec
-005
Sec motion dec
+008
Notes
rPM=1.497
This double is not physical.
 
 
20311+1648 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 20311+1648 ROE 14 AB 1909 2015 10 262 7.0 11.50 12.60 1.10 <===
Show 20311+1648 J 563 BC 1911 2015 9 215 5.1 12.60 13.20 0.60
Triple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
262.3
Precise sep
7.043
Constellation
Delphinus
Gaia DR2
98760871680
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20311+1648 ROE 14 AB 2000 5 263 7.0 11.00 12.00 D 203103.18+164841.3
20311+1648 ROE 14 AB 2001 6 263 7.1 11.00 12.00 D 203103.18+164841.3
20311+1648 ROE 14 AB 2015 7 262 7.0 11.50 12.60 203103.18+164841.3

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