18018+1254 HEI 554

 
 
18H 01M 46.49S +12 54' 17.9" P.A. 10 SEP 1.8 MAG 11.81,13.10
 
 
Coord 2000
18018+1254
Discov num
HEI 554
Comp
Coord arcsec 2000
18 01 46.49 +12 54 17.9
Date first
1988
Date last
1995
Obs
2
Pa first
5
Pa last
10
P.A. Now (θ)
10°
Sep first
1.9
Sep last
1.8
Sep. Now (ρ)
1.8"
Mag pri
11.81
Mag sec
13.10
delta mag (ΔM)
1.29
Spectral class
Pri motion ra
-012
Sec motion ra
Pri motion dec
-015
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Ophiuchus
Tycho2
1016-01244-1
last precise pa
9.5
last precise sep
1.83