18280+2837 COU 638

 
 
18h 28m 00.64s +28 37' 26.4" P.A. 138 sep 3.2 mag 11.30,11.80
 
 
Coord 2000
18280+2837
Discov num
COU 638
Comp
Coord arcsec 2000
18 28 00.64 +28 37 26.4
Date first
1971
Date last
2008
Obs
3
Pa first
151
Pa last
138
P.A. Now (θ)
138°
Sep first
2.4
Sep last
3.2
Sep. Now (ρ)
3.2"
Mag pri
11.30
Mag sec
11.80
delta mag (ΔM)
0.5
Spectral class
Pri motion ra
-004
Sec motion ra
Pri motion dec
+018
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
138.1
Precise sep
3.22
Constellation
Lyra
last precise pa
138.1
last precise sep
3.22
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18280+2837 COU 638 1997 2 144 3.0 10.80 11.30 182800.00+283700.0
18280+2837 COU 638 2008 3 138 3.2 11.30 11.80 182800.64+283726.4

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