20184+2137 ARG  90AB

 
 
20h 18m 23.94s +21 37' 22.0" P.A. 73.00 sep 12.8 mag 10.91,11.28 Sp A5+G0
 
 
Coord 2000
20184+2137
Discov num
ARG  90
Comp
AB
Coord arcsec 2000
20 18 23.94 +21 37 22.0
Date first
1892
Date last
2018
Obs
15
Pa first
71
Pa last
73
P.A. Now (θ)
73°
Sep first
13.6
Sep last
12.8
Sep. Now (ρ)
12.8"
Mag pri
10.91
Mag sec
11.28
delta mag (ΔM)
0.37
Spectral class
A5+G0 (white/yellow)
Pri motion ra
+003
Sec motion ra
+002
Pri motion dec
-001
Sec motion dec
-007
Notes
U (Proper motion indicates non-physical)
rPM=0.836
This double is not physical.
 
 
20184+2137 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 20184+2137 ARG 90 AB 1892 2018 15 73 12.8 10.91 11.28 0.37 <===
Show 20184+2137 DAM 292 AC 1999 2015 7 115 16.7 10.91 14.10 3.19
Triple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
72.5
Precise sep
12.803
Constellation
Sagitta
Tycho2
1643-00564-1
Gaia DR2
79715451648
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20184+2137 ARG 90 AB 2000 1 72 13.0 10.80 11.20 A5+G0 201823.94+213722.0
20184+2137 ARG 90 AB 2001 3 72 13.0 10.80 11.20 A5 G0 201823.94+213722.0
20184+2137 ARG 90 AB 2010 5 73 13.0 10.91 11.28 A5 G0 U 201823.94+213722.0
20184+2137 ARG 90 AB 2015 10 72 12.9 10.91 11.28 A5+G0 U 201823.94+213722.0
20184+2137 ARG 90 AB 2018 11 73 12.8 10.91 11.28 A5+G0 U 201823.94+213722.0

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