17377+3017 HDS2490

 
 
17h 37m 44.76s +30 16' 39.8" P.A. 164 sep 0.2 mag 10.75,10.80 Sp F2 dist. 261.78 pc (853.93 l.y.)
 
 
Coord 2000
17377+3017
Discov num
HDS2490
Comp
Coord arcsec 2000
17 37 44.76 +30 16 39.8
Date first
1991
Date last
2014
Obs
3
Pa first
172
Pa last
164
P.A. Now (θ)
164°
Sep first
0.2
Sep last
0.2
Sep. Now (ρ)
0.2"
Mag pri
10.75
Mag sec
10.80
delta mag (ΔM)
0.05
Spectral class
F2 (yellow-white)
Pri motion ra
+002
Sec motion ra
Pri motion dec
-014
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
163.6
Precise sep
0.212
Constellation
Hercules
SAO
66193
HIP
86277
Tycho2
2606-00917-1
BD
BD+30 3034
Distance
261.78
Distance ly
853.93
last precise pa
163.6
last precise sep
0.212
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
17377+3017 HDS2490 1991 1 172 0.2 10.75 10.80 F2 173744.76+301639.8
17377+3017 HDS2490 2014 3 164 0.2 10.75 10.80 F2 173744.76+301639.8

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