18311+2216 COU  15

 
 
18h 31m 01.16s +22 17' 02.1" P.A. 107 sep 1.5 mag 9.70,12.70 Sp F5
 
 
Coord 2000
18311+2216
Discov num
COU  15
Comp
Coord arcsec 2000
18 31 01.16 +22 17 02.1
Date first
1957
Date last
2000
Obs
2
Pa first
123
Pa last
107
P.A. Now (θ)
107°
Sep first
1.7
Sep last
1.5
Sep. Now (ρ)
1.5"
Mag pri
9.70
Mag sec
12.70
delta mag (ΔM)
3
Spectral class
F5 (yellow-white)
Pri motion ra
-009
Sec motion ra
Pri motion dec
-007
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
107.4
Precise sep
1.54
Constellation
Hercules
Tycho2
1581-00134-1
HD
342390
last precise pa
107.4
last precise sep
1.54
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18311+2216 COU 15 1957 1 123 1.7 9.70 12.70 183160.00+221600.0
18311+2216 COU 15 2000 2 107 1.5 9.70 12.70 183101.16+221702.1

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