18155-1738 ARA 271

 
 
18h 15m 31.51s -17 37' 39.2" P.A. 255 sep 8.9 mag 11.74,12.20
 
 
Coord 2000
18155-1738
Discov num
ARA 271
Comp
Coord arcsec 2000
18 15 31.51 -17 37 39.2
Date first
1916
Date last
1999
Obs
4
Pa first
252
Pa last
255
P.A. Now (θ)
255°
Sep first
9.0
Sep last
8.9
Sep. Now (ρ)
8.9"
Mag pri
11.74
Mag sec
12.20
delta mag (ΔM)
0.46
Spectral class
Pri motion ra
+007
Sec motion ra
+001
Pri motion dec
-001
Sec motion dec
-002
Notes
rPM=0.86
This double is not physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
254.6
Precise sep
8.938
Constellation
Sagittarius
Tycho2
6268-00137-1
last precise pa
254.6
last precise sep
8.938
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18155-1738 ARA 271 1999 2 75 8.9 11.74 12.20 D 181531.51-173739.0

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