18316-0353 A    87CD

 
 
18h 31m 32.93s -03 53' 21.5" sep 4 mag 10.10,14.50 Sp A0IV
 
 
Coord 2000
18316-0353
Discov num
A    87
Comp
CD
Coord arcsec 2000
18 31 32.93 -03 53 21.5
Date first
1900
Date last
2015
Obs
7
Pa first
358
Pa last
0
P.A. Now (θ)
Sep first
4.1
Sep last
4.0
Sep. Now (ρ)
4"
Mag pri
10.10
Mag sec
14.50
delta mag (ΔM)
4.4
Spectral class
A0IV (white)
Pri motion ra
-063
Sec motion ra
Pri motion dec
+056
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
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
359.5
Precise sep
3.99
Constellation
Serpens
last precise pa
359.5
last precise sep
3.99
 
 
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 CD 1925 3 357 4.0 10.20 14.60 183110.00-035300.0
18316-0353 A 87 CD 1999 4 359 4.1 10.10 14.50 D 183132.93-035321.5
18316-0353 A 87 CD 2012 5 0 4.2 10.10 14.50 A0IV 183132.93-035321.5
18316-0353 A 87 CD 2013 6 359 4.1 10.10 14.50 A0IV 183132.93-035321.5
18316-0353 A 87 CD 2015 7 0 4.0 10.10 14.50 A0IV 183132.93-035321.5

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