18125-1522 LV    7AC

 
 
18h 12m 28.50s -15 22' 23.7" P.A. 240 sep 33.7 mag 8.15,10.81 Sp B1/2II dist. 854.7 pc (2788.03 l.y.)
 
 
Coord 2000
18125-1522
Discov num
LV    7
Comp
AC
Coord arcsec 2000
18 12 28.50 -15 22 23.7
Date first
1905
Date last
2000
Obs
9
Pa first
241
Pa last
240
P.A. Now (θ)
240°
Sep first
33.4
Sep last
33.7
Sep. Now (ρ)
33.7"
Mag pri
8.15
Mag sec
10.81
delta mag (ΔM)
2.66
Spectral class
B1/2II (blue-white)
Pri motion ra
+008
Sec motion ra
+002
Pri motion dec
-004
Sec motion dec
-007
Notes
rPM=0.75
Nature of this double is uncertain.
 
 
18125-1522 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 161181 18125-1522 LV 7 AB 1892 1999 13 272 3.4 8.15 11.14 2.99
Show 161181 18125-1522 LV 7 AC 1905 2000 9 240 33.7 8.15 10.81 2.66 <===
Show 161181 18125-1522 AOT 71 AB,D 1987 2000 4 153 18.8 8.15 14.20 6.05
Quadruple system
5 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
240.2
Precise sep
33.698
Constellation
Serpens
SAO
161181
HIP
89223
Tycho2
6264-00483-1
HD
166716
BD
BD-15 4864
Distance
854.7
Distance ly
2788.03
last precise pa
240.2
last precise sep
33.698
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18125-1522 LV 7 AC 1999 5 241 33.6 8.15 11.80 B1/2II D 181228.50-152223.7
18125-1522 LV 7 AC 2000 9 240 33.7 8.15 11.80 B1/2II D 181228.50-152223.7

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