18175-1638 HJ 2829AB

 
 
18h 17m 32.51s -16 38' 14.3" P.A. 320 sep 4.9 mag 9.78,12.30 Sp B2/3II/
 
 
Coord 2000
18175-1638
Discov num
HJ 2829
Comp
AB
Coord arcsec 2000
18 17 32.51 -16 38 14.3
Date first
1830
Date last
1999
Obs
3
Pa first
300
Pa last
320
P.A. Now (θ)
320°
Sep first
2.5
Sep last
4.9
Sep. Now (ρ)
4.9"
Mag pri
9.78
Mag sec
12.30
delta mag (ΔM)
2.52
Spectral class
B2/3II/ (blue-white)
Pri motion ra
+004
Sec motion ra
Pri motion dec
-005
Sec motion dec
Notes
N (See Notes)
Nature of this double is uncertain.
 
 
18175-1638 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 18175-1638 HJ 2829 AB 1830 1999 3 320 4.9 9.78 12.30 2.52 <===
Show 18175-1638 HJ 2829 AC 1830 2000 5 167 6.3 9.78 12.80 3.02
Triple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
320.1
Precise sep
4.89
Constellation
Sagittarius
Tycho2
6265-01463-1
HD
167792
last precise pa
320.1
last precise sep
4.89
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18175-1638 HJ 2829 AB 1999 3 320 4.9 9.78 12.30 N D 181732.51-163814.3

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