18381+3935 BU   50AB

 
 
18h 38m 06.06s +39 35' 11.0" P.A. 2 sep 22.3 mag 9.50,14.00 Sp F
 
 
Coord 2000
18381+3935
Discov num
BU   50
Comp
AB
Coord arcsec 2000
18 38 06.06 +39 35 11.0
Date first
1892
Date last
2013
Obs
9
Pa first
7
Pa last
2
P.A. Now (θ)
Sep first
22.0
Sep last
22.3
Sep. Now (ρ)
22.3"
Mag pri
9.50
Mag sec
14.00
delta mag (ΔM)
4.5
Spectral class
F (yellow-white)
Pri motion ra
+006
Sec motion ra
Pri motion dec
-009
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
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
2
Precise sep
22.27
Constellation
Lyra
SAO
67192
Tycho2
3109-01895-1
last precise pa
2
last precise sep
22.27
 
 
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 AB 2002 6 4 22.2 9.54 14.00 F 183806.06+393511.0
18381+3935 BU 50 AB 2012 8 4 22.3 9.50 14.00 F 183806.06+393511.0
18381+3935 BU 50 AB 2013 9 2 22.3 9.50 14.00 F 183806.06+393511.0

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