20178+5717 KR   50CD

 
 
20h 17m 54.08s +57 17' 36.3" P.A. 355.00 sep 1.7 mag 11.54,12.50
 
 
Coord 2000
20178+5717
Discov num
KR   50
Comp
CD
Coord arcsec 2000
20 17 54.08 +57 17 36.3
Date first
1909
Date last
2016
Obs
2
Pa first
102
Pa last
355
P.A. Now (θ)
355°
Sep first
3.4
Sep last
1.7
Sep. Now (ρ)
1.7"
Mag pri
11.54
Mag sec
12.50
delta mag (ΔM)
0.96
Spectral class
Pri motion ra
+020
Sec motion ra
+018
Pri motion dec
+016
Sec motion dec
+018
Notes
T (Parallax indicates physical)
rPM=0.11 (< 0.3, Physical double)
This double is physical.
 
 
20178+5717 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 20 17 46 +57 17 16 KR 50 AB 2016 16 129 2.1 8.55 9.99 1.44
Show 20 17 46 +57 17 16 KR 50 AC 2015 7 73 66.6 8.55 11.54 2.99
Show 20 17 54 +57 17 36 KR 50 CD 2016 2 355 1.7 11.54 12.50 0.96 <===
Quadruple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
354.9
Precise sep
1.655
Constellation
Cygnus
Tycho2
3945-00178-1
Gaia DR2
2187950181328033280
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20178+5717 KR 50 CD 1909 1 102 3.4 11.54 12.50 201754.08+571736.3

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