20209-3450 B   478

 
 
20h 20m 54.41s -34 49' 55.0" P.A. 28 sep 6 mag 10.15,10.90
 
 
Coord 2000
20209-3450
Discov num
B   478
Comp
Coord arcsec 2000
20 20 54.41 -34 49 55.0
Date first
1912
Date last
2015
Obs
12
Pa first
32
Pa last
28
P.A. Now (θ)
28°
Sep first
5.7
Sep last
6.0
Sep. Now (ρ)
6"
Mag pri
10.15
Mag sec
10.90
delta mag (ΔM)
0.75
Spectral class
Pri motion ra
+061
Sec motion ra
+125
Pri motion dec
-075
Sec motion dec
+038
Notes
rPM=0.994
This double is not physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
27.5
Precise sep
6.013
Constellation
Sagittarius
SAO
212022
Tycho2
7450-01154-1
Gaia DR2
89771673984
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20209-3450 B 478 1999 8 28 6.1 10.15 10.90 D 202054.41-344955.0
20209-3450 B 478 2010 10 28 5.9 10.15 10.90 202054.41-344955.0
20209-3450 B 478 2015 11 28 6.0 10.15 10.90 202054.41-344955.0

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