17518+2814 STF2239

 
 
17h 51m 45.34s +28 14' 16.3" P.A. 317 sep 2.4 mag 9.55,10.00 Sp F8 dist. 178.25 pc (581.45 l.y.)
 
 
Coord 2000
17518+2814
Discov num
STF2239
Comp
Coord arcsec 2000
17 51 45.34 +28 14 16.3
Date first
1830
Date last
2013
Obs
24
Pa first
318
Pa last
317
P.A. Now (θ)
317°
Sep first
2.2
Sep last
2.4
Sep. Now (ρ)
2.4"
Mag pri
9.55
Mag sec
10.00
delta mag (ΔM)
0.45
Spectral class
F8 (yellow-white)
Pri motion ra
+020
Sec motion ra
+020
Pri motion dec
-021
Sec motion dec
-021
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
317
Precise sep
2.444
Constellation
Hercules
SAO
85483
HIP
87407
Tycho2
2102-00434-1
BD
BD+28 2852
Distance
178.25
Distance ly
581.45
last precise pa
317
last precise sep
2.444
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
17518+2814 STF2239 1998 21 320 2.4 9.55 10.00 F8 D 175145.34+281416.3
17518+2814 STF2239 2005 22 318 2.4 9.55 10.00 F8 D 175145.34+281416.3
17518+2814 STF2239 2008 23 319 2.4 9.55 10.00 F8 D 175145.34+281416.3
17518+2814 STF2239 2010 24 318 2.4 9.55 10.00 F8 D 175145.34+281416.3
17518+2814 STF2239 2013 24 317 2.4 9.55 10.00 F8 175145.34+281416.3

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