20391-4345 LDS 717

 
 
20h 39m 12.14s -43 44' 28.9" P.A. 308.00 sep 22.2 mag 12.40,13.00
 
 
Coord 2000
20391-4345
Discov num
LDS 717
Comp
Coord arcsec 2000
20 39 12.14 -43 44 28.9
Date first
1920
Date last
2015
Obs
5
Pa first
315
Pa last
308
P.A. Now (θ)
308°
Sep first
22.0
Sep last
22.2
Sep. Now (ρ)
22.2"
Mag pri
12.40
Mag sec
13.00
delta mag (ΔM)
0.6
Spectral class
Pri motion ra
+012
Sec motion ra
-002
Pri motion dec
-144
Sec motion dec
-140
Notes
rPM=0.101 (< 0.3, Physical double)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
308.4
Precise sep
22.158
Constellation
Microscopium
Gaia DR2
6676186087905510016
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20391-4345 LDS 717 1999 2 309 22.1 12.40 13.00 D 203912.14-434428.9
20391-4345 LDS 717 2010 4 309 22.2 12.40 13.00 203912.14-434428.9
20391-4345 LDS 717 2015 5 308 22.2 12.40 13.00 203912.14-434428.9

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