18257-4412 DON 898

 
 
18h 25m 39.32s -44 12' 03.7" P.A. 24 sep 0.5 mag 10.60,11.30 Sp A1IV/V
 
 
Coord 2000
18257-4412
Discov num
DON 898
Comp
Coord arcsec 2000
18 25 39.32 -44 12 03.7
Date first
1930
Date last
1948
Obs
2
Pa first
26
Pa last
24
P.A. Now (θ)
24°
Sep first
0.3
Sep last
0.5
Sep. Now (ρ)
0.5"
Mag pri
10.60
Mag sec
11.30
delta mag (ΔM)
0.7
Spectral class
A1IV/V (white)
Pri motion ra
+002
Sec motion ra
Pri motion dec
-005
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
23.8
Precise sep
0.46
Constellation
Corona Austrina
Tycho2
7913-00937-1
HD
169201
last precise pa
23.8
last precise sep
0.46
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18257-4412 DON 898 1948 2 24 0.5 10.60 11.30 A1IV/V 182539.32-441203.7

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