18551+1644 WFC 216

 
 
18h 55m 04.26s +16 44' 20.3" P.A. 89 sep 12 mag 9.07,9.55 Sp A2
 
 
Coord 2000
18551+1644
Discov num
WFC 216
Comp
Coord arcsec 2000
18 55 04.26 +16 44 20.3
Date first
1896
Date last
2016
Obs
13
Pa first
92
Pa last
89
P.A. Now (θ)
89°
Sep first
12.4
Sep last
12.0
Sep. Now (ρ)
12"
Mag pri
9.07
Mag sec
9.55
delta mag (ΔM)
0.48
Spectral class
A2 (white)
Pri motion ra
+000
Sec motion ra
+000
Pri motion dec
-016
Sec motion dec
-011
Notes
rPM=0.312
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
88.7
Precise sep
12.031
Cdsa2 id
WFC 216
Constellation
Hercules
Ra deg
18.91785
De deg
16.738972222222223
last precise pa
88.7
last precise sep
12.031
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18551+1644 WFC 216 2004 7 89 11.9 9.07 9.55 D 185504.26+164420.3
18551+1644 WFC 216 2010 11 89 11.5 9.07 9.55 A2 185504.26+164420.3
18551+1644 WFC 216 2015 12 88 11.9 9.07 9.55 A2 185504.26+164420.3
18551+1644 WFC 216 2016 13 89 12.0 9.07 9.55 A2 185504.26+164420.3

If you need more information about this double, apply for a data request form to the WDS.