18019-2247 BU  283AB

 
 
18h 01m 54.38s -22 46' 49.0" P.A. 238 sep 8.3 mag 5.77,12.80 Sp B0Iab/Ib dist. 7142.86 pc (23300.01 l.y.)
 
 
Coord 2000
18019-2247
Discov num
BU  283
Comp
AB
Coord arcsec 2000
18 01 54.38 -22 46 49.0
Date first
1874
Date last
1998
Obs
8
Pa first
230
Pa last
238
P.A. Now (θ)
238°
Sep first
8.0
Sep last
8.3
Sep. Now (ρ)
8.3"
Mag pri
5.77
Mag sec
12.80
delta mag (ΔM)
7.03
Spectral class
B0Iab/Ib (blue-white)
Pri motion ra
+001
Sec motion ra
Pri motion dec
-002
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
18019-2247 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 186135 18019-2247 BU 283 AB 1874 1998 8 238 8.3 5.77 12.80 7.03 <===
Show 186135 18019-2247 BU 283 AC 1892 1999 3 33 13.6 5.77 14.00 8.23
Show 186135 18019-2247 FOX9030 AD 1920 2000 4 267 24.5 5.77 14.00 8.23
Quadruple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
238
Precise sep
8.3
Constellation
Sagittarius
SAO
186135
HIP
88298
Tycho2
6842-00111-1
HD
164402
HR
6716
BD
BD-22 4503
CD
CD-2212441
CP
CP-22 6547
Distance
7142.86
Distance ly
23300.01
last precise pa
238
last precise sep
8.3
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18019-2247 BU 283 AB 1998 8 238 8.3 5.77 12.80 B0Iab/Ib D 180154.38-224649.0

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