18187-1345 SNA  89AC

 
 
18h 18m 40.09s -13 45' 18.5" P.A. 249 sep 5.1 mag 6.71,14.14 Sp O7II
 
 
Coord 2000
18187-1345
Discov num
SNA  89
Comp
AC
Coord arcsec 2000
18 18 40.09 -13 45 18.5
Date first
2012
Date last
2012
Obs
1
Pa first
249
Pa last
249
P.A. Now (θ)
249°
Sep first
5.1
Sep last
5.1
Sep. Now (ρ)
5.1"
Mag pri
6.71
Mag sec
14.14
delta mag (ΔM)
7.43
Spectral class
O7II (blue)
Pri motion ra
-000
Sec motion ra
Pri motion dec
+001
Sec motion dec
Notes
K (K-band or other infrared magnitudes)
Nature of this double is uncertain.
 
 
18187-1345 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 18187-1345 SNA 89 AB 2012 2012 1 344 5.1 6.71 14.57 7.86
Show 18187-1345 SNA 89 AC 2012 2012 1 249 5.1 6.71 14.14 7.43 <===
Show 18187-1345 SNA 89 AD 2012 2012 1 206 5.5 6.71 11.34 4.63
Show 18187-1345 SNA 89 AE 2012 2012 1 241 6.2 6.71 13.43 6.72
Quintuple system
5 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
249.1
Precise sep
5.12
Cdsa2 id
SNA 89 AC
Constellation
Serpens
Tycho2
5689-00989-1
Ra deg
18.31113611111111
De deg
-13.755138888888888
last precise pa
249.1
last precise sep
5.12
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18187-1345 SNA 89 AC 2012 1 249 5.1 6.71 14.14 O7II K 181840.09-134518.5

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