18019+3123 SEI 554

 
 
18h 01m 53.94s +31 22' 27.5" P.A. 48 sep 23.6 mag 11.59,12.40
 
 
Coord 2000
18019+3123
Discov num
SEI 554
Comp
Coord arcsec 2000
18 01 53.94 +31 22 27.5
Date first
1899
Date last
2010
Obs
11
Pa first
47
Pa last
48
P.A. Now (θ)
48°
Sep first
24.1
Sep last
23.6
Sep. Now (ρ)
23.6"
Mag pri
11.59
Mag sec
12.40
delta mag (ΔM)
0.81
Spectral class
Pri motion ra
+001
Sec motion ra
+007
Pri motion dec
+022
Sec motion dec
+014
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Hercules
Tycho2
2621-01775-1
last precise pa
48
last precise sep
23.58
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18019+3123 SEI 554 2006 9 47 24.9 11.59 12.40 D 180153.94+312227.5
18019+3123 SEI 554 2010 11 48 23.5 11.59 12.40 180153.94+312227.5

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