17231+2545 HO  415

 
 
17h 23m 07.69s +25 45' 11.1" P.A. 345 sep 0.9 mag 8.83,9.67 Sp F5
 
 
Coord 2000
17231+2545
Discov num
HO  415
Comp
Coord arcsec 2000
17 23 07.69 +25 45 11.1
Date first
1891
Date last
2015
Obs
49
Pa first
334
Pa last
345
P.A. Now (θ)
345°
Sep first
0.8
Sep last
0.9
Sep. Now (ρ)
0.9"
Mag pri
8.83
Mag sec
9.67
delta mag (ΔM)
0.84
Spectral class
F5 (yellow-white)
Pri motion ra
-001
Sec motion ra
-001
Pri motion dec
+016
Sec motion dec
+016
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
344.6
Precise sep
0.85
Constellation
Hercules
Tycho2
2078-00223-1
HD
157581
last precise pa
344.6
last precise sep
0.85
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
17231+2545 HO 415 2005 47 343 0.9 8.83 9.67 F5 172307.69+254511.1
17231+2545 HO 415 2007 48 344 0.9 8.83 9.67 F5 172307.69+254511.1
17231+2545 HO 415 2009 49 345 0.9 8.83 9.67 F5 172307.69+254511.1
17231+2545 HO 415 2011 50 344 0.9 8.83 9.67 F5 172307.69+254511.1
17231+2545 HO 415 2014 48 346 1.0 8.83 9.67 F5 172307.69+254511.1
17231+2545 HO 415 2015 49 345 0.9 8.83 9.67 F5 172307.69+254511.1

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