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
Cdsa2 id
HDS 2490
Constellation
Hercules
SAO
66193
HIP
86277
Tycho2
2606-00917-1
BD
BD+30 3034
Ra deg
17.6291
De deg
30.27772222222222
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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