20008+2949 BU  439AB

 
 
20h 00m 46.25s +29 49' 19.4" P.A. 240 sep 2.9 mag 7.89,12.70 Sp G0V
 
 
Coord 2000
20008+2949
Discov num
BU  439
Comp
AB
Coord arcsec 2000
20 00 46.25 +29 49 19.4
Date first
1876
Date last
1925
Obs
16
Pa first
250
Pa last
240
P.A. Now (θ)
240°
Sep first
2.7
Sep last
2.9
Sep. Now (ρ)
2.9"
Mag pri
7.89
Mag sec
12.70
delta mag (ΔM)
4.81
Spectral class
G0V (yellow)
Pri motion ra
+016
Sec motion ra
Pri motion dec
-115
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
20008+2949 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 20008+2949 BU 439 AB 1876 1925 16 240 2.9 7.89 12.70 4.81 <===
Show 20008+2949 BU 439 AC 1907 2014 7 201 38.5 7.89 12.25 4.36
Show 20008+2949 FOX9033 AD 1913 2000 3 60 10.8 7.89 12.00 4.11
Show 20008+2949 FOX9033 AE 1913 2002 3 122 23.2 7.89 14.40 6.51
Quintuple system
5 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
240.1
Precise sep
2.92
Cdsa2 id
BU 439 AB
Constellation
Cygnus
Ra deg
20.012847222222224
De deg
29.822055555555554
last precise pa
240.1
last precise sep
2.92
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20008+2949 BU 439 AB 1925 16 240 2.9 7.89 12.70 G0V D 200046.25+294919.4

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