17121+2515 COU 313

 
 
17h 12m 06.58s +25 14' 56.9" P.A. 335 sep 0.8 mag 8.64,11.21 Sp F8V dist. 72.52 pc (236.56 l.y.)
 
 
Coord 2000
17121+2515
Discov num
COU 313
Comp
Coord arcsec 2000
17 12 06.58 +25 14 56.9
Date first
1968
Date last
2007
Obs
8
Pa first
331
Pa last
335
P.A. Now (θ)
335°
Sep first
0.8
Sep last
0.8
Sep. Now (ρ)
0.8"
Mag pri
8.64
Mag sec
11.21
delta mag (ΔM)
2.57
Spectral class
F8V (yellow-white)
Pri motion ra
-004
Sec motion ra
-007
Pri motion dec
+074
Sec motion dec
+079
Notes
rPM=0.074 (< 0.3, Physical double)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
335
Precise sep
0.815
Constellation
Hercules
SAO
84913
HIP
84138
Tycho2
2065-00752-1
HD
155675
BD
BD+25 3212
Distance
72.52
Distance ly
236.56
last precise pa
335
last precise sep
0.815
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
17121+2515 COU 313 1999 6 336 0.9 8.64 11.21 F8V D 171206.58+251456.9
17121+2515 COU 313 2007 8 335 0.8 8.64 11.21 F8V D 171206.58+251456.9

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