18316-0353 A    87AC

 
 
18h 31m 33.12s -03 53' 24.4" P.A. 316 sep 4.2 mag 10.10,10.10
 
 
Coord 2000
18316-0353
Discov num
A    87
Comp
AC
Coord arcsec 2000
18 31 33.12 -03 53 24.4
Date first
1897
Date last
2015
Obs
15
Pa first
138
Pa last
316
P.A. Now (θ)
316°
Sep first
3.7
Sep last
4.2
Sep. Now (ρ)
4.2"
Mag pri
10.10
Mag sec
10.10
delta mag (ΔM)
0
Spectral class
Pri motion ra
-051
Sec motion ra
+007
Pri motion dec
+046
Sec motion dec
-018
Notes
rPM=1.258
This double is not physical.
 
 
18316-0353 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 18316-0353 A 87 AB 1900 2012 7 294 1.5 10.10 13.10 3.00
Show 18316-0353 A 87 AC 1897 2015 15 316 4.2 10.10 10.10 0.00 <===
Show 18316-0353 A 87 CD 1900 2015 7 0 4.0 10.10 14.50 4.40
Quadruple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
316.2
Precise sep
4.22
Constellation
Serpens
last precise pa
316.2
last precise sep
4.22
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18316-0353 A 87 AC 2000 9 315 4.5 10.10 10.20 D 183132.91-035321.3
18316-0353 A 87 AC 2010 10 315 4.4 10.10 10.10 D 183133.12-035324.4
18316-0353 A 87 AC 2012 12 315 4.5 10.10 10.10 183133.12-035324.4
18316-0353 A 87 AC 2015 14 316 4.2 10.10 10.10 183133.12-035324.4

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