18303+1907 COU 508

 
 
18h 30m 16.78s +19 07' 27.3" P.A. 254 sep 0.9 mag 10.00,12.70 Sp F5
 
 
Coord 2000
18303+1907
Discov num
COU 508
Comp
Coord arcsec 2000
18 30 16.78 +19 07 27.3
Date first
1970
Date last
2010
Obs
3
Pa first
249
Pa last
254
P.A. Now (θ)
254°
Sep first
0.7
Sep last
0.9
Sep. Now (ρ)
0.9"
Mag pri
10.00
Mag sec
12.70
delta mag (ΔM)
2.7
Spectral class
F5 (yellow-white)
Pri motion ra
-012
Sec motion ra
Pri motion dec
+007
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
254.4
Precise sep
0.89
Constellation
Hercules
SAO
103790
Tycho2
1577-01852-1
HD
348794
last precise pa
254.4
last precise sep
0.89
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18303+1907 COU 508 1970 1 249 0.7 10.00 12.70 F5 183016.78+190727.3
18303+1907 COU 508 2010 2 254 0.9 10.00 12.70 F5 183016.78+190727.3

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