18310+2221 J   806

 
 
18h 30m 57.12s +22 20' 59.1" P.A. 237 sep 2.7 mag 10.93,14.50
 
 
Coord 2000
18310+2221
Discov num
J   806
Comp
Coord arcsec 2000
18 30 57.12 +22 20 59.1
Date first
1912
Date last
2000
Obs
4
Pa first
233
Pa last
237
P.A. Now (θ)
237°
Sep first
2.3
Sep last
2.7
Sep. Now (ρ)
2.7"
Mag pri
10.93
Mag sec
14.50
delta mag (ΔM)
3.57
Spectral class
Pri motion ra
+004
Sec motion ra
Pri motion dec
-010
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
237.4
Precise sep
2.72
Constellation
Hercules
Tycho2
1581-00089-1
HD
342383
last precise pa
237.4
last precise sep
2.72
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18310+2221 J 806 1955 3 237 2.2 10.93 14.50 183057.12+222059.1
18310+2221 J 806 2000 4 237 2.7 10.93 14.50 183057.12+222059.1

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