18102-1616 ARA  98

 
 
18h 10m 12.18s -16 15' 43.0" P.A. 78 sep 9 mag 9.07,12.30 Sp B9.5IV/V
 
 
Coord 2000
18102-1616
Discov num
ARA  98
Comp
Coord arcsec 2000
18 10 12.18 -16 15 43.0
Date first
1903
Date last
1999
Obs
5
Pa first
83
Pa last
78
P.A. Now (θ)
78°
Sep first
8.7
Sep last
9.0
Sep. Now (ρ)
9"
Mag pri
9.07
Mag sec
12.30
delta mag (ΔM)
3.23
Spectral class
B9.5IV/V (blue-white)
Pri motion ra
+000
Sec motion ra
+003
Pri motion dec
-013
Sec motion dec
-002
Notes
rPM=0.877
This double is not physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
77.7
Precise sep
8.984
Cdsa2 id
ARA 98
Constellation
Sagittarius
SAO
161133
Tycho2
6264-01520-1
HD
166187
Ra deg
18.17005
De deg
-16.261944444444445
last precise pa
77.7
last precise sep
8.984
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18102-1616 ARA 98 1999 4 77 9.0 9.07 12.30 B9.5IV/V D 181012.18-161543.0

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