18509-2235 DON 927AC

 
 
18h 50m 56.78s -22 34' 56.5" P.A. 9 sep 9.1 mag 9.63,13.50 Sp F5V
 
 
Coord 2000
18509-2235
Discov num
DON 927
Comp
AC
Coord arcsec 2000
18 50 56.78 -22 34 56.5
Date first
1929
Date last
1999
Obs
3
Pa first
7
Pa last
9
P.A. Now (θ)
Sep first
8.8
Sep last
9.1
Sep. Now (ρ)
9.1"
Mag pri
9.63
Mag sec
13.50
delta mag (ΔM)
3.87
Spectral class
F5V (yellow-white)
Pri motion ra
+002
Sec motion ra
+006
Pri motion dec
-008
Sec motion dec
+024
Notes
rPM=1.304
This double is not physical.
 
 
18509-2235 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 187347 18509-2235 DON 927 AB 1929 1943 2 70 3.0 9.63 15.70 6.07
Show 187347 18509-2235 DON 927 AC 1929 1999 3 9 9.1 9.63 13.50 3.87 <===
Triple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
8.6
Precise sep
9.128
Constellation
Sagittarius
SAO
187347
Tycho2
6860-00286-1
HD
174331
last precise pa
8.6
last precise sep
9.128
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18509-2235 DON 927 AC 1998 2 8 9.2 9.63 13.50 F5V D 185056.78-223456.5
18509-2235 DON 927 AC 1999 3 9 9.1 9.63 13.50 F5V D 185056.78-223456.5
18509-2235 DON 927 AC 2010 4 7 8.4 9.63 13.50 F5V 185056.78-223456.5

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