18499-4422 DON 925

 
 
18h 49m 49.64s -44 22' 06.9" P.A. 170 sep 2.7 mag 10.65,10.86
 
 
Coord 2000
18499-4422
Discov num
DON 925
Comp
Coord arcsec 2000
18 49 49.64 -44 22 06.9
Date first
1931
Date last
1998
Obs
4
Pa first
170
Pa last
170
P.A. Now (θ)
170°
Sep first
2.3
Sep last
2.7
Sep. Now (ρ)
2.7"
Mag pri
10.65
Mag sec
10.86
delta mag (ΔM)
0.21
Spectral class
Pri motion ra
-001
Sec motion ra
+011
Pri motion dec
+024
Sec motion dec
-042
Notes
rPM=1.545
This double is not physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
170.4
Precise sep
2.694
Constellation
Corona Austrina
Tycho2
7927-00313-1
last precise pa
170.4
last precise sep
2.694
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18499-4422 DON 925 1991 3 172 2.7 10.65 10.86 184949.64-442206.9
18499-4422 DON 925 1998 4 170 2.7 10.65 10.86 184949.64-442206.9

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