18303-2533 B   394

 
 
18h 30m 19.83s -25 32' 59.8" P.A. 197 sep 0.2 mag 8.90,9.00 Sp A1/2IV
 
 
Coord 2000
18303-2533
Discov num
B   394
Comp
Coord arcsec 2000
18 30 19.83 -25 32 59.8
Date first
1928
Date last
2008
Obs
12
Pa first
179
Pa last
197
P.A. Now (θ)
197°
Sep first
0.2
Sep last
0.2
Sep. Now (ρ)
0.2"
Mag pri
8.90
Mag sec
9.00
delta mag (ΔM)
0.1
Spectral class
A1/2IV (white)
Pri motion ra
+015
Sec motion ra
Pri motion dec
-006
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
197.1
Precise sep
0.179
Constellation
Sagittarius
SAO
186888
Tycho2
6861-02179-1
HD
170398
last precise pa
197.1
last precise sep
0.179
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18303-2533 B 394 1991 11 190 0.2 8.90 9.00 A1/2IV 183019.83-253259.8
18303-2533 B 394 2008 12 197 0.2 8.90 9.00 A1/2IV 183019.83-253259.8

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