17309-5621 FIN 257

 
 
17h 30m 56.97s -56 20' 40.5" P.A. 228 sep 0.2 mag 9.50,9.90 Sp G2
 
 
Coord 2000
17309-5621
Discov num
FIN 257
Comp
Coord arcsec 2000
17 30 56.97 -56 20 40.5
Date first
1930
Date last
2008
Obs
5
Pa first
327
Pa last
228
P.A. Now (θ)
228°
Sep first
0.5
Sep last
0.2
Sep. Now (ρ)
0.2"
Mag pri
9.50
Mag sec
9.90
delta mag (ΔM)
0.4
Spectral class
G2 (yellow)
Pri motion ra
-023
Sec motion ra
Pri motion dec
-052
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
228.2
Precise sep
0.202
Constellation
Ara
SAO
244801
Tycho2
8736-02846-1
last precise pa
228.2
last precise sep
0.202
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
17309-5621 FIN 257 1990 4 9 0.3 9.50 9.90 G2 173056.97-562040.5
17309-5621 FIN 257 2008 5 228 0.2 9.50 9.90 G2 173056.97-562040.5

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