20344-4221 DON 988AB

 
 
20h 34m 23.71s -42 20' 11.0" P.A. 118 sep 0.6 mag 10.79,11.14 Sp G5
 
 
Coord 2000
20344-4221
Discov num
DON 988
Comp
AB
Coord arcsec 2000
20 34 23.71 -42 20 11.0
Date first
1932
Date last
1991
Obs
5
Pa first
118
Pa last
118
P.A. Now (θ)
118°
Sep first
0.6
Sep last
0.6
Sep. Now (ρ)
0.6"
Mag pri
10.79
Mag sec
11.14
delta mag (ΔM)
0.35
Spectral class
G5 (yellow)
Pri motion ra
+013
Sec motion ra
Pri motion dec
+004
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
20344-4221 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 20344-4221 DON 988 AB 1932 1991 5 118 0.6 10.79 11.14 0.35 <===
Show 20344-4221 DON 988 AB,C 1901 2014 9 90 23.1 10.35 9.41 0.94
Triple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
117.5
Precise sep
0.62
Constellation
Microscopium
Tycho2
7958-01006-1
Gaia DR2
17234812416
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20344-4221 DON 988 AB 1991 5 118 0.6 10.79 11.14 G5 203423.70-422011.0

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