17181+2742 A   231

 
 
17H 18M 07.35S +27 42' 27.8" P.A. 107 SEP 1.9 MAG 9.55,14.10 SP G5
 
 
Coord 2000
17181+2742
Discov num
A   231
Comp
Coord arcsec 2000
17 18 07.35 +27 42 27.8
Date first
1901
Date last
2007
Obs
4
Pa first
114
Pa last
107
P.A. Now (θ)
107°
Sep first
1.8
Sep last
1.9
Sep. Now (ρ)
1.9"
Mag pri
9.55
Mag sec
14.10
delta mag (ΔM)
4.55
Spectral class
G5 (yellow)
Pri motion ra
-041
Sec motion ra
Pri motion dec
-014
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Hercules
SAO
84993
Tycho2
2069-00388-1
last precise pa
107.3
last precise sep
1.876