20391-0942 J  1400AB

 
 
20h 39m 02.21s -09 42' 16.1" P.A. 21 sep 4.6 mag 11.18,12.10
 
 
Coord 2000
20391-0942
Discov num
J  1400
Comp
AB
Coord arcsec 2000
20 39 02.21 -09 42 16.1
Date first
1905
Date last
2016
Obs
8
Pa first
24
Pa last
21
P.A. Now (θ)
21°
Sep first
4.0
Sep last
4.6
Sep. Now (ρ)
4.6"
Mag pri
11.18
Mag sec
12.10
delta mag (ΔM)
0.92
Spectral class
Pri motion ra
-001
Sec motion ra
+003
Pri motion dec
-009
Sec motion dec
+002
Notes
rPM=1.293
This double is not physical.
 
 
20391-0942 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 20391-0942 J 1400 AB 1905 2016 8 21 4.6 11.18 12.10 0.92 <===
Show 20391-0942 J 1400 AC 1905 2016 9 232 12.4 11.18 13.60 2.42
Triple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
21.3
Precise sep
4.628
Constellation
Aquarius
Tycho2
5759-01966-1
Gaia DR2
41441620480
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20391-0942 J 1400 AB 2000 5 22 4.6 11.18 12.10 203901.21-094215.9
20391-0942 J 1400 AB 2001 4 23 4.6 11.96 12.40 203901.21-094216.1
20391-0942 J 1400 AB 2014 6 21 3.7 11.18 12.10 203902.21-094216.1
20391-0942 J 1400 AB 2016 7 21 4.6 11.18 12.10 203902.21-094216.1

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