20178+5717 KR   50AC

 
 
20h 17m 46.12s +57 17' 16.4" P.A. 73 sep 66.6 mag 8.55,11.54 Sp K0
 
 
Coord 2000
20178+5717
Discov num
KR   50
Comp
AC
Coord arcsec 2000
20 17 46.12 +57 17 16.4
Date first
1898
Date last
2015
Obs
7
Pa first
73
Pa last
73
P.A. Now (θ)
73°
Sep first
75.0
Sep last
66.6
Sep. Now (ρ)
66.6"
Mag pri
8.55
Mag sec
11.54
delta mag (ΔM)
2.99
Spectral class
K0 (yellow-orange)
Pri motion ra
+079
Sec motion ra
+019
Pri motion dec
+054
Sec motion dec
+019
Notes
rPM=0.726
Nature of this double is uncertain.
 
 
20178+5717 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 20178+5717 KR 50 AB 1890 2016 15 129 2.1 8.55 9.99 1.44
Show 20178+5717 KR 50 AC 1898 2015 7 73 66.6 8.55 11.54 2.99 <===
Show 20178+5717 KR 50 CD 1909 1909 1 102 3.4 11.54 12.50 0.96
Quadruple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
73.2
Precise sep
66.57
Constellation
Cygnus
Tycho2
3945-00886-1
Gaia DR2
77607218944
HD
193511
 
 
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 AC 1999 5 73 67.5 8.55 11.54 D 201746.12+571716.4
20178+5717 KR 50 AC 2003 6 73 67.2 8.55 11.54 D 201746.12+571716.4
20178+5717 KR 50 AC 2015 7 73 66.6 8.55 11.54 K0 201746.12+571716.4

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