18307-1639 ARA 104

 
 
18h 30m 40.64s -16 38' 36.4" P.A. 205 sep 11.3 mag 11.31,11.45
 
 
Coord 2000
18307-1639
Discov num
ARA 104
Comp
Coord arcsec 2000
18 30 40.64 -16 38 36.4
Date first
1916
Date last
1999
Obs
4
Pa first
205
Pa last
205
P.A. Now (θ)
205°
Sep first
11.4
Sep last
11.3
Sep. Now (ρ)
11.3"
Mag pri
11.31
Mag sec
11.45
delta mag (ΔM)
0.14
Spectral class
Pri motion ra
-006
Sec motion ra
-014
Pri motion dec
-009
Sec motion dec
-027
Notes
rPM=0.648
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
205.3
Precise sep
11.311
Constellation
Sagittarius
Tycho2
6266-02547-1
last precise pa
205.3
last precise sep
11.311
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18307-1639 ARA 104 1998 3 205 11.3 11.31 11.45 D 183040.64-163836.4
18307-1639 ARA 104 1999 4 205 11.3 11.31 11.45 D 183040.64-163836.4

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