18093+3836 HEI 557

 
 
18h 09m 20.63s +38 36' 30.1" P.A. 281 sep 1.5 mag 11.40,11.80
 
 
Coord 2000
18093+3836
Discov num
HEI 557
Comp
Coord arcsec 2000
18 09 20.63 +38 36 30.1
Date first
1970
Date last
1996
Obs
5
Pa first
281
Pa last
281
P.A. Now (θ)
281°
Sep first
1.5
Sep last
1.5
Sep. Now (ρ)
1.5"
Mag pri
11.40
Mag sec
11.80
delta mag (ΔM)
0.4
Spectral class
Pri motion ra
-010
Sec motion ra
Pri motion dec
-006
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
280.7
Precise sep
1.52
Constellation
Hercules
last precise pa
280.7
last precise sep
1.52
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18093+3836 HEI 557 1996 5 281 1.5 11.40 11.80 180920.00+383600.0

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