18427-1547 HU  250

 
 
18h 42m 44.23s -15 47' 21.4" P.A. 298 sep 2.2 mag 9.40,14.90 Sp B5Ib
 
 
Coord 2000
18427-1547
Discov num
HU  250
Comp
Coord arcsec 2000
18 42 44.23 -15 47 21.4
Date first
1900
Date last
2000
Obs
3
Pa first
296
Pa last
298
P.A. Now (θ)
298°
Sep first
2.1
Sep last
2.2
Sep. Now (ρ)
2.2"
Mag pri
9.40
Mag sec
14.90
delta mag (ΔM)
5.5
Spectral class
B5Ib (blue-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
297.6
Precise sep
2.2
Constellation
Scutum
last precise pa
297.6
last precise sep
2.2
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18427-1547 HU 250 1922 2 298 2.3 9.35 14.90 B5Ib 184244.23-154721.4
18427-1547 HU 250 2000 3 298 2.2 9.40 14.90 B5Ib 184244.23-154721.4

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