20301+4857 BU  669AB (Ome1 Cyg)

 
 
20h 30m 03.53s +48 57' 05.6" P.A. 336 sep 15 mag 4.95,12.90 Sp B2.5IV dist. 278.55 pc (908.63 l.y.)
 
 
Coord 2000
20301+4857
Discov num
BU  669
Comp
AB
Coord arcsec 2000
20 30 03.53 +48 57 05.6
Date first
1878
Date last
2013
Obs
10
Pa first
343
Pa last
336
P.A. Now (θ)
336°
Sep first
17.3
Sep last
15.0
Sep. Now (ρ)
15"
Mag pri
4.95
Mag sec
12.90
delta mag (ΔM)
7.95
Spectral class
B2.5IV (blue-white)
Pri motion ra
+011
Sec motion ra
Pri motion dec
+007
Sec motion dec
Notes
N (See Notes)
Nature of this double is uncertain.
 
 
20301+4857 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show Ome1 Cyg 49712 20301+4857 BU 669 AB 1878 2013 10 336 15.0 4.95 12.90 7.95 <===
Show 20301+4857 BU 669 AC 1878 2013 11 89 55.8 4.92 11.77 6.85
Show 20301+4857 GUI 32 AD 1899 2015 7 44 131.1 4.92 11.99 7.07
Quadruple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
335.9
Precise sep
15.03
Name
Ome1 Cyg
Constellation
Cygnus
SAO
49712
HIP
101138
Tycho2
3581-02031-1
Gaia DR2
91862120192
HD
195556
HR
7844
GC
28537
BD
BD+48 3142
Bayer
Omega 1 Cygni
Bayer name
Ome1 Cyg
Flamsteed
45 Cygni
Flamsteed name
45 Cyg
Distance
278.55
Distance ly
908.63
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20301+4857 BU 669 AB 2000 8 336 17.3 4.95 12.90 B2.5IV N D 203003.53+485705.6
20301+4857 BU 669 AB 2003 9 336 18.1 4.95 12.90 B2.5IV N D 203003.53+485705.6
20301+4857 BU 669 AB 2013 10 336 15.0 4.95 12.90 B2.5IV N 203003.53+485705.6

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