17567-2955 B   364

 
 
17h 56m 42.72s -29 55' 18.6" P.A. 20 sep 4.4 mag 8.40,14.50 Sp B9
 
 
Coord 2000
17567-2955
Discov num
B   364
Comp
Coord arcsec 2000
17 56 42.72 -29 55 18.6
Date first
1926
Date last
2010
Obs
3
Pa first
21
Pa last
20
P.A. Now (θ)
20°
Sep first
4.5
Sep last
4.4
Sep. Now (ρ)
4.4"
Mag pri
8.40
Mag sec
14.50
delta mag (ΔM)
6.1
Spectral class
B9 (blue-white)
Pri motion ra
-007
Sec motion ra
Pri motion dec
-009
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
19.6
Precise sep
4.41
Constellation
Sagittarius
SAO
185974
Tycho2
6853-02451-1
HD
163301
last precise pa
19.6
last precise sep
4.41
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
17567-2955 B 364 1926 1 21 4.5 8.40 14.50 B9 175642.72-295518.6
17567-2955 B 364 2007 2 18 4.4 8.40 14.50 B9 175642.72-295518.6
17567-2955 B 364 2010 3 20 4.4 8.40 14.50 B9 175642.72-295518.6

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