18518+3105 COU1012

 
 
18h 51m 49.06s +31 05' 00.5" P.A. 239 sep 0.4 mag 9.60,10.90 Sp F2
 
 
Coord 2000
18518+3105
Discov num
COU1012
Comp
Coord arcsec 2000
18 51 49.06 +31 05 00.5
Date first
1973
Date last
2009
Obs
5
Pa first
238
Pa last
239
P.A. Now (θ)
239°
Sep first
0.3
Sep last
0.4
Sep. Now (ρ)
0.4"
Mag pri
9.60
Mag sec
10.90
delta mag (ΔM)
1.3
Spectral class
F2 (yellow-white)
Pri motion ra
+007
Sec motion ra
Pri motion dec
-025
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
238.9
Precise sep
0.43
Constellation
Lyra
SAO
67486
Tycho2
2638-01582-1
Gaia DR2
17172917632
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18518+3105 COU1012 1996 3 243 0.4 9.60 10.90 F2 185149.06+310500.5
18518+3105 COU1012 2007 4 240 0.4 9.60 10.90 F2 185149.06+310500.5
18518+3105 COU1012 2009 5 239 0.4 9.60 10.90 F2 185149.06+310500.5

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