20215+3035 BU 1259Ba,Bb

 
 
20h 21m 19.55s +30 36' 03.5" P.A. 191 sep 0.2 mag 9.06,9.60 Sp A3 dist. 226.76 pc (739.69 l.y.)
 
 
Coord 2000
20215+3035
Discov num
BU 1259
Comp
Ba,Bb
Coord arcsec 2000
20 21 19.55 +30 36 03.5
Date first
1891
Date last
1991
Obs
26
Pa first
172
Pa last
191
P.A. Now (θ)
191°
Sep first
0.5
Sep last
0.2
Sep. Now (ρ)
0.2"
Mag pri
9.06
Mag sec
9.60
delta mag (ΔM)
0.54
Spectral class
A3 (white)
Pri motion ra
+008
Sec motion ra
Pri motion dec
+002
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
20215+3035 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 20215+3035 ARY 4 AB 1900 2015 16 287 134.9 6.78 8.54 1.76
Show 20215+3035 BU 1259 Ba,Bb 1891 1991 26 191 0.2 9.06 9.60 0.54 <===
Show 20215+3035 BU 1259 BC 1916 2012 9 356 10.3 8.54 13.50 4.96
Quadruple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
191
Precise sep
0.228
Constellation
Cygnus
SAO
69879
HIP
100369
Tycho2
2672-01711-1
Gaia DR2
54747817344
HD
334154
BD
BD+30 3994
Distance
226.76
Distance ly
739.69
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20215+3035 BU 1259 Ba,Bb 1991 25 191 0.2 9.11 9.65 A3 202119.55+303603.5

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