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
Constellation
Hercules
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

If you need more information about this double, apply for a data request form to the WDS.