18411+4416 HDS2647

 
 
18h 41m 03.49s +44 16' 16.0" P.A. 268 sep 0.1 mag 7.58,9.41 Sp F0III dist. 198.81 pc (648.52 l.y.)
 
 
Coord 2000
18411+4416
Discov num
HDS2647
Comp
Coord arcsec 2000
18 41 03.49 +44 16 16.0
Date first
1991
Date last
2007
Obs
4
Pa first
288
Pa last
268
P.A. Now (θ)
268°
Sep first
0.2
Sep last
0.1
Sep. Now (ρ)
0.1"
Mag pri
7.58
Mag sec
9.41
delta mag (ΔM)
1.83
Spectral class
F0III (yellow-white)
Pri motion ra
+002
Sec motion ra
Pri motion dec
+000
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
268
Precise sep
0.14
Constellation
Lyra
SAO
47702
HIP
91615
Tycho2
3130-00268-1
HD
172976
BD
BD+44 2963
Distance
198.81
Distance ly
648.52
last precise pa
268
last precise sep
0.14
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18411+4416 HDS2647 2003 3 274 0.2 7.58 9.41 F0III D 184103.49+441616.0
18411+4416 HDS2647 2007 4 268 0.1 7.58 9.41 F0III D 184103.49+441616.0

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