20301+4857 BU 669 AC (Ome1 Cyg)

 
 
20h 30m 03.53s +48° 57' 05.6" P.A. 89.00 sep 55.8 mag 4.92,11.77 Sp B2.5IV dist. 278.55 pc (908.63 l.y.)
 
 
Coord 2000 20301+4857 Discov num BU  669 Comp AC Coord arcsec 2000 20 30 03.53 +48 57 05.6
Date first 1878 Date last 2013 Obs 11
Pa first 86 Pa last 88.8 P.A. Now (θ) 88.8°
Sep first 56.3 Sep last 55.78 Sep. Now (ρ) 55.78"
Mag pri 4.92 Mag sec 11.77 delta mag (ΔM) 6.85 Spectral class B2.5IV (blue-white)
Pri motion ra +011 Sec motion ra +009
Pri motion dec +007 Sec motion dec -016
Notes N (See Notes)
rPM=1.258
This double is not physical.
 
 
20301+4857 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 49712 20 30 04 +48 57 06 BU 669 AB 2013 10 336 15.0 4.95 12.90 7.95
Show Ome1 Cyg 49712 20 30 04 +48 57 06 BU 669 AC 2013 11 89 55.8 4.92 11.77 6.85 <===
Show 49712 20 30 04 +48 57 06 GUI 32 AD 2015 7 44 131.1 4.92 11.99 7.07
Quadruple system
4 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name Ome1 Cyg Constellation Cygnus SAO 49712 HIP 101138
Tycho2 3581-02031-1 Gaia DR2 2083947891862120192 HD 195556 HR 7844
GC 28537 ADS 13932 BD BD+48 3142 Bayer Omega 1 Cygni
Bayer name Ome1 Cyg Flamsteed 45 Cygni Flamsteed name 45 Cyg FK5 3641
Distance 278.55 Distance ly 908.63 Bayer greek ω1 Cyg