18503-2100 ARA1554

 
 
18h 50m 17.87s -20 59' 44.8" P.A. 188 sep 9.8 mag 10.73,12.80
 
 
Coord 2000
18503-2100
Discov num
ARA1554
Comp
Coord arcsec 2000
18 50 17.87 -20 59 44.8
Date first
1921
Date last
1999
Obs
4
Pa first
184
Pa last
188
P.A. Now (θ)
188°
Sep first
10.4
Sep last
9.8
Sep. Now (ρ)
9.8"
Mag pri
10.73
Mag sec
12.80
delta mag (ΔM)
2.07
Spectral class
Pri motion ra
+009
Sec motion ra
+013
Pri motion dec
-007
Sec motion dec
+002
Notes
rPM=0.749
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
187.5
Precise sep
9.812
Constellation
Sagittarius
last precise pa
187.5
last precise sep
9.812
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18503-2100 ARA1554 1998 3 187 9.7 10.73 12.80 D 185017.87-205944.8
18503-2100 ARA1554 1999 4 188 9.8 10.73 12.80 D 185017.87-205944.8

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