18490-0828 STF2388BC

 
 
18h 48m 58.04s -08 26' 39.2" P.A. 18 sep 21.4 mag 10.94,11.24 Sp B9V+
 
 
Coord 2000
18490-0828
Discov num
STF2388
Comp
BC
Coord arcsec 2000
18 48 58.04 -08 26 39.2
Date first
1892
Date last
2011
Obs
9
Pa first
19
Pa last
18
P.A. Now (θ)
18°
Sep first
21.6
Sep last
21.4
Sep. Now (ρ)
21.4"
Mag pri
10.94
Mag sec
11.24
delta mag (ΔM)
0.3
Spectral class
B9V+ (blue-white)
Pri motion ra
+000
Sec motion ra
-004
Pri motion dec
-010
Sec motion dec
-006
Notes
N U (See Notes, Proper motion indicates non-physical)
rPM=0.566
This double is not physical.
 
 
18490-0828 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 18490-0828 HDS2666 Aa,Ab 1991 2013 2 258 0.2 8.08 9.59 1.51
Show 18490-0828 STF2388 AB 1892 2000 8 344 53.8 7.81 10.94 3.13
Show 18490-0828 ABH 105 AD 1896 2002 5 156 43.4 7.81 12.62 4.81
Show 18490-0828 ABH 105 AE 1988 2002 4 276 71.9 7.81 12.93 5.12
Show 18490-0828 STF2388 BC 1892 2011 9 18 21.4 10.94 11.24 0.30 <===
Sextuple system
5 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
18.1
Precise sep
21.36
Constellation
Scutum
Tycho2
5693-03523-1
last precise pa
17.6
last precise sep
21.13
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18490-0828 STF2388 BC 1999 7 18 21.0 10.94 11.24 B9V+ N D 184858.04-082639.2
18490-0828 STF2388 BC 2011 8 18 21.4 10.94 11.24 B9V+ NUD 184858.04-082639.2

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