18086+1700 HDS2555

 
 
18h 08m 35.81s +17 00' 09.5" P.A. 112 sep 0.5 mag 9.32,11.72 Sp A2 dist. 260.42 pc (849.49 l.y.)
 
 
Coord 2000
18086+1700
Discov num
HDS2555
Comp
Coord arcsec 2000
18 08 35.81 +17 00 09.5
Date first
1991
Date last
2010
Obs
2
Pa first
117
Pa last
112
P.A. Now (θ)
112°
Sep first
0.4
Sep last
0.5
Sep. Now (ρ)
0.5"
Mag pri
9.32
Mag sec
11.72
delta mag (ΔM)
2.4
Spectral class
A2 (white)
Pri motion ra
-002
Sec motion ra
Pri motion dec
+004
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
111.7
Precise sep
0.48
Constellation
Hercules
SAO
103418
HIP
88868
Tycho2
1571-01960-1
BD
BD+16 3380
Distance
260.42
Distance ly
849.49
last precise pa
111.7
last precise sep
0.48
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18086+1700 HDS2555 1991 1 117 0.4 9.32 11.72 A2 D 180835.81+170009.5
18086+1700 HDS2555 2010 2 112 0.5 9.32 11.72 A2 D 180835.81+170009.5

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