20429-1757 ARA 499AB

 
 
20h 42m 56.60s -17 55' 47.1" P.A. 172 sep 14.1 mag 10.52,11.40
 
 
Coord 2000
20429-1757
Discov num
ARA 499
Comp
AB
Coord arcsec 2000
20 42 56.60 -17 55 47.1
Date first
1917
Date last
2012
Obs
6
Pa first
177
Pa last
172
P.A. Now (θ)
172°
Sep first
14.5
Sep last
14.1
Sep. Now (ρ)
14.1"
Mag pri
10.52
Mag sec
11.40
delta mag (ΔM)
0.88
Spectral class
Pri motion ra
+003
Sec motion ra
+016
Pri motion dec
-007
Sec motion dec
-008
Notes
rPM=0.729
Nature of this double is uncertain.
 
 
20429-1757 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 20429-1757 TDT2493 Aa,Ab 1991 1991 1 261 0.7 10.95 11.44 0.49
Show 20429-1757 ARA 499 AB 1917 2012 6 172 14.1 10.52 11.40 0.88 <===
Triple system
2 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
172.4
Precise sep
14.14
Constellation
Capricornus
last precise pa
172.4
last precise sep
14.14
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20429-1757 ARA 499 AB 1999 3 173 14.1 10.52 11.40 N D 204256.60-175547.1
20429-1757 ARA 499 AB 2012 5 172 14.1 10.52 11.40 204256.60-175547.1

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