17490+2511 COU 501

 
 
17h 48m 57.40s +25 11' 00.4" P.A. 318 sep 1.9 mag 10.14,10.24 Sp F5
 
 
Coord 2000
17490+2511
Discov num
COU 501
Comp
Coord arcsec 2000
17 48 57.40 +25 11 00.4
Date first
1970
Date last
2012
Obs
13
Pa first
319
Pa last
318
P.A. Now (θ)
318°
Sep first
1.6
Sep last
1.9
Sep. Now (ρ)
1.9"
Mag pri
10.14
Mag sec
10.24
delta mag (ΔM)
0.1
Spectral class
F5 (yellow-white)
Pri motion ra
-008
Sec motion ra
-008
Pri motion dec
-002
Sec motion dec
-002
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
318
Precise sep
1.877
Constellation
Hercules
Tycho2
2081-01058-1
last precise pa
318
last precise sep
1.877
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
17490+2511 COU 501 2005 17 320 1.9 10.14 10.24 F5 174857.40+251100.4
17490+2511 COU 501 2010 18 318 1.9 10.14 10.24 F5 174857.40+251100.4
17490+2511 COU 501 2012 13 318 1.9 10.14 10.24 F5 174857.40+251100.4

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