18381+3935 BU 50 AC

18h 38m 06.06s +39° 35' 11.0" P.A. 328.00 sep 74.3 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 2020 Obs 19
Pa first 330 Pa last 328.1 P.A. Now (θ) 328.1°
Sep first 70.0 Sep last 74.315 Sep. Now (ρ) 74.315"
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 wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 18 38 06 +39 35 11 BU 50 AB 2020 15 3 22.2 9.50 14.00 4.50
Show 18 38 06 +39 35 11 BU 50 AC 2020 19 328 74.3 9.54 11.60 2.06 <===
Show 18 38 06 +39 35 11 BU 50 AD 2020 11 327 68.1 9.54 11.60 2.06
Show 18 38 03 +39 36 14 BU 50 CD 2020 15 165 6.5 10.50 12.60 2.10


Quadruple system
4 estimated visually detectable stars in this system



OTHER CATALOGS AND DESIGNATIONS

Constellation Lyra Tycho2 3109-01895-1 Gaia DR2 2098072321301870720 DM BD+39 3475