18312-4344 I  1369

 
 
18h 31m 13.74s -43 43' 47.5" P.A. 239 sep 4.2 mag 7.87,11.90 Sp B5IV
 
 
Coord 2000
18312-4344
Discov num
I  1369
Comp
Coord arcsec 2000
18 31 13.74 -43 43 47.5
Date first
1926
Date last
1944
Obs
3
Pa first
230
Pa last
239
P.A. Now (θ)
239°
Sep first
4.0
Sep last
4.2
Sep. Now (ρ)
4.2"
Mag pri
7.87
Mag sec
11.90
delta mag (ΔM)
4.03
Spectral class
B5IV (blue-white)
Pri motion ra
+000
Sec motion ra
Pri motion dec
-004
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
238.5
Precise sep
4.19
Constellation
Corona Austrina
SAO
229084
Tycho2
7914-00103-1
HD
170385
last precise pa
238.5
last precise sep
4.19
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18312-4344 I 1369 1944 3 239 4.2 7.87 11.90 B5IV 183113.74-434347.5

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