18119+3417 SEI 561

 
 
18h 11m 51.26s +34 17' 53.4" P.A. 155 sep 20.8 mag 11.81,12.50
 
 
Coord 2000
18119+3417
Discov num
SEI 561
Comp
Coord arcsec 2000
18 11 51.26 +34 17 53.4
Date first
1894
Date last
2010
Obs
6
Pa first
154
Pa last
155
P.A. Now (θ)
155°
Sep first
20.1
Sep last
20.8
Sep. Now (ρ)
20.8"
Mag pri
11.81
Mag sec
12.50
delta mag (ΔM)
0.69
Spectral class
Pri motion ra
-006
Sec motion ra
-006
Pri motion dec
-008
Sec motion dec
-014
Notes
rPM=0.394
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
154.5
Precise sep
20.81
Constellation
Hercules
Tycho2
2630-00374-1
last precise pa
154.5
last precise sep
20.81
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18119+3417 SEI 561 1998 4 154 20.8 11.81 12.50 D 181151.26+341753.4
18119+3417 SEI 561 2002 5 154 20.8 11.81 12.50 D 181151.26+341753.4
18119+3417 SEI 561 2010 6 154 20.8 11.81 12.50 181151.26+341753.4

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