18254-1631 HU   64AC

 
 
18h 25m 22.92s -16 30' 31.9" P.A. 21 sep 15.6 mag 9.80,12.30 Sp K0III
 
 
Coord 2000
18254-1631
Discov num
HU   64
Comp
AC
Coord arcsec 2000
18 25 22.92 -16 30 31.9
Date first
1905
Date last
2000
Obs
5
Pa first
31
Pa last
21
P.A. Now (θ)
21°
Sep first
16.3
Sep last
15.6
Sep. Now (ρ)
15.6"
Mag pri
9.80
Mag sec
12.30
delta mag (ΔM)
2.5
Spectral class
K0III (yellow-orange)
Pri motion ra
+015
Sec motion ra
-014
Pri motion dec
-011
Sec motion dec
-005
Notes
N (See Notes)
rPM=1.592
This double is not physical.
 
 
18254-1631 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 18254-1631 HU 64 AB 1899 2000 12 12 3.7 9.80 10.80 1.00
Show 18254-1631 HU 64 AC 1905 2000 5 21 15.6 9.80 12.30 2.50 <===
Show 18254-1631 HU 64 AD 1910 2000 3 350 24.4 9.80 12.80 3.00
Quadruple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
20.5
Precise sep
15.6
Constellation
Sagittarius
Tycho2
6266-02751-1
HD
169457
last precise pa
20.5
last precise sep
15.6
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18254-1631 HU 64 AC 1932 3 27 17.6 9.80 12.30 K0III N 182522.92-163031.9
18254-1631 HU 64 AC 2000 4 21 15.6 9.80 12.30 K0III N 182522.92-163031.9

If you need more information about this double, apply for a data request form to the WDS.