18138-1847 HJ  594AC

 
 
18h 13m 46.29s -18 48' 36.4" P.A. 238 sep 13.8 mag 8.62,9.76 Sp B2IV/V
 
 
Coord 2000
18138-1847
Discov num
HJ  594
Comp
AC
Coord arcsec 2000
18 13 46.29 -18 48 36.4
Date first
1857
Date last
2003
Obs
13
Pa first
239
Pa last
238
P.A. Now (θ)
238°
Sep first
13.3
Sep last
13.8
Sep. Now (ρ)
13.8"
Mag pri
8.62
Mag sec
9.76
delta mag (ΔM)
1.14
Spectral class
B2IV/V (blue-white)
Pri motion ra
-004
Sec motion ra
-001
Pri motion dec
+001
Sec motion dec
-004
Notes
rPM=1.414
This double is not physical.
 
 
18138-1847 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 18138-1847 HJ 594 AB 1857 2003 18 121 7.9 8.62 9.42 0.80
Show 18138-1847 HJ 594 AC 1857 2003 13 238 13.8 8.62 9.76 1.14 <===
Triple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
238
Precise sep
13.83
Constellation
Sagittarius
Tycho2
6272-00706-1
HD
166934
last precise pa
238
last precise sep
13.83
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18138-1847 HJ 594 AC 2003 12 238 13.8 8.62 9.76 D 181346.29-184836.4
18138-1847 HJ 594 AC 2010 14 241 13.5 8.62 9.76 B2IV/V 181346.29-184836.4

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