18540+1516 L    40

 
 
18h 53m 57.03s +15 15' 35.6" P.A. 6 sep 13.6 mag 8.56,11.70 Sp A0
 
 
Coord 2000
18540+1516
Discov num
L    40
Comp
Coord arcsec 2000
18 53 57.03 +15 15 35.6
Date first
1896
Date last
2010
Obs
9
Pa first
7
Pa last
6
P.A. Now (θ)
Sep first
13.4
Sep last
13.6
Sep. Now (ρ)
13.6"
Mag pri
8.56
Mag sec
11.70
delta mag (ΔM)
3.14
Spectral class
A0 (white)
Pri motion ra
+003
Sec motion ra
+005
Pri motion dec
-006
Sec motion dec
-004
Notes
N (See Notes)
rPM=0.422
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
5.7
Precise sep
13.56
Cdsa2 id
L 40
Constellation
Hercules
Ra deg
18.899175
De deg
15.25988888888889
last precise pa
5.7
last precise sep
13.56
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18540+1516 L 40 1997 5 5 13.6 7.50 10.00 A0 N D 185357.03+151535.6
18540+1516 L 40 2008 6 6 13.3 7.50 10.00 A0 N D 185357.03+151535.6
18540+1516 L 40 2010 9 6 13.6 8.56 11.70 A0 N 185357.03+151535.6

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