17389+4522 ES 1258

 
 
17h 38m 54.29s +45 22' 27.3" P.A. 316 sep 11.7 mag 9.86,13.80 Sp F2
 
 
Coord 2000
17389+4522
Discov num
ES 1258
Comp
Coord arcsec 2000
17 38 54.29 +45 22 27.3
Date first
1913
Date last
2007
Obs
4
Pa first
323
Pa last
316
P.A. Now (θ)
316°
Sep first
5.9
Sep last
11.7
Sep. Now (ρ)
11.7"
Mag pri
9.86
Mag sec
13.80
delta mag (ΔM)
3.94
Spectral class
F2 (yellow-white)
Pri motion ra
+013
Sec motion ra
Pri motion dec
-044
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
315.8
Precise sep
11.72
Constellation
Hercules
SAO
46862
Tycho2
3510-01443-1
last precise pa
315.8
last precise sep
11.72
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
17389+4522 ES 1258 2007 3 316 11.7 9.86 13.80 F2 D 173854.29+452227.3
17389+4522 ES 1258 2010 5 317 12.8 9.86 13.80 F2 173854.29+452227.3

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