20215+3035 ARY   4AB

 
 
20h 21m 29.56s +30 35' 25.0" P.A. 287 sep 134.9 mag 6.78,8.54 Sp Am dist. 114.29 pc (372.81 l.y.)
 
 
Coord 2000
20215+3035
Discov num
ARY   4
Comp
AB
Coord arcsec 2000
20 21 29.56 +30 35 25.0
Date first
1900
Date last
2015
Obs
16
Pa first
288
Pa last
287
P.A. Now (θ)
287°
Sep first
135.1
Sep last
134.9
Sep. Now (ρ)
134.9"
Mag pri
6.78
Mag sec
8.54
delta mag (ΔM)
1.76
Spectral class
Am (white)
Pri motion ra
+012
Sec motion ra
+008
Pri motion dec
+022
Sec motion dec
+010
Notes
rPM=0.505
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
286.5
Precise sep
134.857
Constellation
Cygnus
SAO
69888
HIP
100384
Tycho2
2672-02202-1
Gaia DR2
92186372864
HD
193857
BD
BD+30 3998
Distance
114.29
Distance ly
372.81
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20215+3035 ARY 4 AB 2000 11 287 134.5 6.78 8.54 Am D 202129.56+303525.0
20215+3035 ARY 4 AB 2010 12 287 134.8 6.78 8.54 Am D 202129.56+303525.0
20215+3035 ARY 4 AB 2012 15 286 134.5 6.78 8.54 Am D 202129.56+303525.0
20215+3035 ARY 4 AB 2015 16 287 134.9 6.78 8.54 Am 202129.56+303525.0

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