17315-7112 B  2838

 
 
17h 31m 30.16s -71 12' 16.0" P.A. 40 sep 12.6 mag 9.13,11.81 Sp A1IV/V dist. 309.6 pc (1009.92 l.y.)
 
 
Coord 2000
17315-7112
Discov num
B  2838
Comp
Coord arcsec 2000
17 31 30.16 -71 12 16.0
Date first
1895
Date last
2010
Obs
6
Pa first
38
Pa last
40
P.A. Now (θ)
40°
Sep first
12.8
Sep last
12.6
Sep. Now (ρ)
12.6"
Mag pri
9.13
Mag sec
11.81
delta mag (ΔM)
2.68
Spectral class
A1IV/V (white)
Pri motion ra
+000
Sec motion ra
+007
Pri motion dec
-005
Sec motion dec
-009
Notes
rPM=0.707
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
39.7
Precise sep
12.64
Constellation
Apus
SAO
257506
HIP
85764
Tycho2
9280-02061-1
HD
157739
CP
CP-71 2153
Distance
309.6
Distance ly
1009.92
last precise pa
39.7
last precise sep
12.64
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
17315-7112 B 2838 2000 4 39 12.6 9.13 11.81 A1IV/V D 173130.16-711216.0
17315-7112 B 2838 2010 6 40 12.5 9.13 11.81 A1IV/V 173130.16-711216.0

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