18191-2644 B   387BD

 
 
18h 19m 06.24s -26 44' 11.5" P.A. 321 sep 4.7 mag 10.93,14.90 Sp A0V
 
 
Coord 2000
18191-2644
Discov num
B   387
Comp
BD
Coord arcsec 2000
18 19 06.24 -26 44 11.5
Date first
1927
Date last
1999
Obs
2
Pa first
323
Pa last
321
P.A. Now (θ)
321°
Sep first
4.2
Sep last
4.7
Sep. Now (ρ)
4.7"
Mag pri
10.93
Mag sec
14.90
delta mag (ΔM)
3.97
Spectral class
A0V (white)
Pri motion ra
-002
Sec motion ra
Pri motion dec
-017
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
18191-2644 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 186637 18191-2644 B 387 AB 1912 2000 8 37 8.7 10.15 10.93 0.78
Show 186637 18191-2644 B 387 BC 1927 2016 4 164 0.8 10.93 11.46 0.53
Show 186637 18191-2644 B 387 BD 1927 1999 2 321 4.7 10.93 14.90 3.97 <===
Quadruple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
321.3
Precise sep
4.69
Constellation
Sagittarius
SAO
186637
Tycho2
6852-05206-1
last precise pa
321.3
last precise sep
4.69
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18191-2644 B 387 BD 1999 2 321 4.7 10.93 14.90 D 181906.24-264411.5

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