18381+3935 BU   50AC

 
 
18h 38m 06.06s +39 35' 11.0" P.A. 328 sep 73.6 mag 9.54,11.60 Sp F
 
 
Coord 2000
18381+3935
Discov num
BU   50
Comp
AC
Coord arcsec 2000
18 38 06.06 +39 35 11.0
Date first
1872
Date last
2013
Obs
13
Pa first
330
Pa last
328
P.A. Now (θ)
328°
Sep first
70.0
Sep last
73.6
Sep. Now (ρ)
73.6"
Mag pri
9.54
Mag sec
11.60
delta mag (ΔM)
2.06
Spectral class
F (yellow-white)
Pri motion ra
+006
Sec motion ra
-010
Pri motion dec
-009
Sec motion dec
+017
Notes
rPM=1.548
This double is not physical.
 
 
18381+3935 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 67192 18381+3935 BU 50 AB 1892 2013 9 2 22.3 9.50 14.00 4.50
Show 67192 18381+3935 BU 50 AC 1872 2013 13 328 73.6 9.54 11.60 2.06 <===
Show 67192 18381+3935 BU 50 AD 1982 2013 5 327 68.1 9.54 11.60 2.06
Show 18381+3935 BU 50 CD 1872 2013 11 162 5.7 10.50 12.60 2.10
Quadruple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
328.2
Precise sep
73.57
Constellation
Lyra
SAO
67192
Tycho2
3109-01895-1
last precise pa
328.2
last precise sep
73.57
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18381+3935 BU 50 AC 2002 9 328 74.1 9.54 10.50 F 183806.06+393511.0
18381+3935 BU 50 AC 2012 11 328 72.6 9.50 10.50 F 183806.06+393511.0
18381+3935 BU 50 AC 2013 13 328 73.6 9.54 11.60 F 183806.06+393511.0

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