20353+4251 A   397AB,C

 
 
20h 35m 16.62s +42 50' 47.3" P.A. 302 sep 53.6 mag 9.65,8.81 Sp F8+F8
 
 
Coord 2000
20353+4251
Discov num
A   397
Comp
AB,C
Coord arcsec 2000
20 35 16.62 +42 50 47.3
Date first
1892
Date last
2002
Obs
6
Pa first
302
Pa last
302
P.A. Now (θ)
302°
Sep first
53.9
Sep last
53.6
Sep. Now (ρ)
53.6"
Mag pri
9.65
Mag sec
8.81
delta mag (ΔM)
0.84
Spectral class
F8+F8 (yellow-white/yellow-white)
Pri motion ra
-026
Sec motion ra
-026
Pri motion dec
+003
Sec motion dec
-002
Notes
rPM=0.191 (< 0.3, Physical double)
This double is physical.
 
 
20353+4251 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 20353+4251 A 397 AB 1902 1980 8 198 1.3 9.65 12.50 2.85
Show 20353+4251 A 397 AB,C 1892 2002 6 302 53.6 9.65 8.81 0.84 <===
Triple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
301.6
Precise sep
53.649
Constellation
Cygnus
Tycho2
3161-00061-1
last precise pa
301.6
last precise sep
53.649
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20353+4251 A 397 AB,C 2000 3 122 53.7 9.65 8.81 F8+F8 203516.62+425047.3
20353+4251 A 397 AB,C 2002 6 302 53.6 9.65 8.81 F8+F8 203516.62+425047.3

If you need more information about this double, apply for a data request form to the WDS.