18490-0828 STF2388AB

 
 
18h 48m 59.03s -08 27' 31.2" P.A. 344 sep 53.6 mag 7.81,10.94 Sp B2V+B9V
 
 
Coord 2000
18490-0828
Discov num
STF2388
Comp
AB
Coord arcsec 2000
18 48 59.03 -08 27 31.2
Date first
1892
Date last
2016
Obs
9
Pa first
345
Pa last
344
P.A. Now (θ)
344°
Sep first
54.6
Sep last
53.6
Sep. Now (ρ)
53.6"
Mag pri
7.81
Mag sec
10.94
delta mag (ΔM)
3.13
Spectral class
B2V+B9V (blue-white/blue-white)
Pri motion ra
-001
Sec motion ra
+000
Pri motion dec
-006
Sec motion dec
-010
Notes
N (See Notes)
rPM=0.412
Nature of this double is uncertain.
 
 
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 2017 3 257 0.2 8.08 9.59 1.51
Show 18490-0828 STF2388 AB 1892 2016 9 344 53.6 7.81 10.94 3.13 <===
Show 18490-0828 ABH 105 AD 1896 2016 6 157 43.8 7.81 12.62 4.81
Show 18490-0828 ABH 105 AE 1988 2016 5 275 72.2 7.81 12.93 5.12
Show 18490-0828 STF2388 BC 1892 2016 10 18 21.1 10.94 11.24 0.30
Sextuple system
5 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
344
Precise sep
53.6
Constellation
Scutum
Tycho2
5693-02550-1
HD
174069
last precise pa
344
last precise sep
53.6
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18490-0828 STF2388 AB 1999 7 344 54.2 7.81 10.94 B2V+B9V N D 184859.03-082731.2
18490-0828 STF2388 AB 2000 8 344 53.7 7.81 10.94 B2V B9V N D 184859.03-082731.2
18490-0828 STF2388 AB 2016 9 344 53.6 7.81 10.94 B2V+B9V N 184859.03-082731.2

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