18480-1814 RST3198

 
 
18h 47m 58.42s -18 13' 43.3" P.A. 154 sep 0.4 mag 7.75,9.00 Sp F2+A2
 
 
Coord 2000
18480-1814
Discov num
RST3198
Comp
Coord arcsec 2000
18 47 58.42 -18 13 43.3
Date first
1934
Date last
2008
Obs
10
Pa first
161
Pa last
154
P.A. Now (θ)
154°
Sep first
0.4
Sep last
0.4
Sep. Now (ρ)
0.4"
Mag pri
7.75
Mag sec
9.00
delta mag (ΔM)
1.25
Spectral class
F2+A2 (yellow-white/white)
Pri motion ra
-003
Sec motion ra
-003
Pri motion dec
-003
Sec motion dec
-003
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
154
Precise sep
0.448
Constellation
Sagittarius
Tycho2
6284-00876-1
HD
173805
last precise pa
154
last precise sep
0.448
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18480-1814 RST3198 1991 9 151 0.4 7.75 9.00 F2+A2 D 184758.42-181343.3
18480-1814 RST3198 2008 10 154 0.4 7.75 9.00 F2+A2 D 184758.42-181343.3

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