18257+2639 COU 815

 
 
18h 25m 44.22s +26 39' 25.0" P.A. 146 sep 1.5 mag 9.01,11.30 Sp Ap
 
 
Coord 2000
18257+2639
Discov num
COU 815
Comp
Coord arcsec 2000
18 25 44.22 +26 39 25.0
Date first
1972
Date last
2010
Obs
7
Pa first
143
Pa last
146
P.A. Now (θ)
146°
Sep first
1.2
Sep last
1.5
Sep. Now (ρ)
1.5"
Mag pri
9.01
Mag sec
11.30
delta mag (ΔM)
2.29
Spectral class
Ap (white)
Pri motion ra
-005
Sec motion ra
Pri motion dec
-007
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
145.9
Precise sep
1.527
Constellation
Hercules
SAO
86035
Tycho2
2114-02099-1
HD
169887
last precise pa
145.9
last precise sep
1.527
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18257+2639 COU 815 1998 5 144 1.6 9.01 11.30 Ap 182544.22+263925.0
18257+2639 COU 815 2009 6 147 1.6 9.01 11.30 Ap 182544.22+263925.0
18257+2639 COU 815 2010 7 146 1.5 9.01 11.30 Ap 182544.22+263925.0

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