18175+2931 COU 814

 
 
18h 17m 23.63s +29 30' 15.9" P.A. 230 sep 5.3 mag 11.38,14.20 Sp K2
 
 
Coord 2000
18175+2931
Discov num
COU 814
Comp
Coord arcsec 2000
18 17 23.63 +29 30 15.9
Date first
1972
Date last
2002
Obs
3
Pa first
226
Pa last
230
P.A. Now (θ)
230°
Sep first
5.0
Sep last
5.3
Sep. Now (ρ)
5.3"
Mag pri
11.38
Mag sec
14.20
delta mag (ΔM)
2.82
Spectral class
K2 (yellow-orange)
Pri motion ra
+002
Sec motion ra
+038
Pri motion dec
+001
Sec motion dec
-011
Notes
rPM=0.959
This double is not physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
229.5
Precise sep
5.289
Constellation
Hercules
Tycho2
2105-00271-1
last precise pa
229.5
last precise sep
5.289
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18175+2931 COU 814 1972 1 226 5.0 11.52 13.50 K2 181732.83+293059.3
18175+2931 COU 814 1998 2 229 5.3 11.38 14.20 K2 D 181723.63+293015.9
18175+2931 COU 814 2002 3 230 5.3 11.38 14.20 K2 D 181723.63+293015.9
18175+2931 COU 814 2010 4 228 5.0 11.38 14.20 K2 181723.63+293015.9

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