18461+1655 HEI 259

 
 
18h 46m 08.41s +16 54' 42.4" P.A. 248 sep 1.9 mag 10.00,10.40 Sp A7
 
 
Coord 2000
18461+1655
Discov num
HEI 259
Comp
Coord arcsec 2000
18 46 08.41 +16 54 42.4
Date first
1983
Date last
2012
Obs
5
Pa first
249
Pa last
248
P.A. Now (θ)
248°
Sep first
2.0
Sep last
1.9
Sep. Now (ρ)
1.9"
Mag pri
10.00
Mag sec
10.40
delta mag (ΔM)
0.4
Spectral class
A7 (white)
Pri motion ra
+021
Sec motion ra
Pri motion dec
+005
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
247.5
Precise sep
1.885
Constellation
Hercules
Tycho2
1587-00147-1
HD
229431
last precise pa
247.5
last precise sep
1.885
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18461+1655 HEI 259 2005 4 248 1.9 10.00 10.40 184608.41+165442.4
18461+1655 HEI 259 2012 5 248 1.9 10.00 10.40 A7 184608.41+165442.4

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