18501+3149 A   256

 
 
18h 50m 03.54s +31 48' 48.2" P.A. 59 sep 2.9 mag 9.04,11.17 Sp G5
 
 
Coord 2000
18501+3149
Discov num
A   256
Comp
Coord arcsec 2000
18 50 03.54 +31 48 48.2
Date first
1901
Date last
2009
Obs
14
Pa first
54
Pa last
59
P.A. Now (θ)
59°
Sep first
2.5
Sep last
2.9
Sep. Now (ρ)
2.9"
Mag pri
9.04
Mag sec
11.17
delta mag (ΔM)
2.13
Spectral class
G5 (yellow)
Pri motion ra
+040
Sec motion ra
Pri motion dec
-005
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
59
Precise sep
2.86
Cdsa2 id
A 256
Constellation
Lyra
Tycho2
2638-01618-1
Ra deg
18.834316666666666
De deg
31.81338888888889
last precise pa
59
last precise sep
2.86
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18501+3149 A 256 2002 13 59 2.9 9.04 11.17 G5 185003.54+314848.2
18501+3149 A 256 2009 14 59 2.9 9.04 11.17 G5 185003.54+314848.2

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