20377+5351 A  1681AB

 
 
20h 37m 39.97s +53 50' 35.2" P.A. 209.00 sep 4.4 mag 8.87,11.61 Sp G5 dist. 67.66 pc (220.71 l.y.)
 
 
Coord 2000
20377+5351
Discov num
A  1681
Comp
AB
Coord arcsec 2000
20 37 39.97 +53 50 35.2
Date first
1907
Date last
2018
Obs
21
Pa first
213
Pa last
209
P.A. Now (θ)
209°
Sep first
3.5
Sep last
4.4
Sep. Now (ρ)
4.4"
Mag pri
8.87
Mag sec
11.61
delta mag (ΔM)
2.74
Spectral class
G5 (yellow)
Pri motion ra
+011
Sec motion ra
+010
Pri motion dec
-226
Sec motion dec
-219
Notes
V (Proper motion indicates physical)
rPM=0.031 (< 0.3, Physical double)
This double is physical.
 
 
20377+5351 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 32740 20377+5351 A 1681 AB 1907 2018 21 209 4.4 8.87 11.61 2.74 <===
Show 32740 20377+5351 A 1681 AC 1922 2003 3 339 56.9 8.87 12.27 3.40
Triple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
209.1
Precise sep
4.395
Constellation
Cygnus
SAO
32740
HIP
101779
Tycho2
3950-02619-1
Gaia DR2
06505670528
HD
235300
BD
BD+53 2447
Distance
67.66
Distance ly
220.71
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20377+5351 A 1681 AB 2003 10 210 4.3 8.86 11.60 G5 DV 203739.96+535037.1
20377+5351 A 1681 AB 2005 11 210 4.4 8.87 11.61 G5 VD 203739.97+535035.2
20377+5351 A 1681 AB 2010 13 209 3.6 8.87 11.61 G5 V 203739.97+535035.2
20377+5351 A 1681 AB 2012 17 210 4.4 8.87 11.61 G5 V 203739.97+535035.2
20377+5351 A 1681 AB 2015 18 210 4.4 8.87 11.61 G5 V 203739.97+535035.2
20377+5351 A 1681 AB 2018 21 209 4.4 8.87 11.61 G5 V 203739.97+535035.2

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