20178+5717 KR   50AB

 
 
20h 17m 46.12s +57 17' 16.4" P.A. 129 sep 2.1 mag 8.55,9.99 Sp K0
 
 
Coord 2000
20178+5717
Discov num
KR   50
Comp
AB
Coord arcsec 2000
20 17 46.12 +57 17 16.4
Date first
1890
Date last
2016
Obs
15
Pa first
131
Pa last
129
P.A. Now (θ)
129°
Sep first
2.2
Sep last
2.1
Sep. Now (ρ)
2.1"
Mag pri
8.55
Mag sec
9.99
delta mag (ΔM)
1.44
Spectral class
K0 (yellow-orange)
Pri motion ra
+084
Sec motion ra
+084
Pri motion dec
+049
Sec motion dec
+049
Notes
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 2003 6 73 67.3 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
128.5
Precise sep
2.103
Cdsa2 id
KR 50 AB
Constellation
Cygnus
Tycho2
3945-00886-1
HD
193511
Ra deg
20.296144444444447
De deg
57.28788888888889
last precise pa
128.5
last precise sep
2.103
 
 
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 AB 1997 14 129 2.1 8.55 9.99 K0 201746.12+571716.4
20178+5717 KR 50 AB 2010 15 128 2.0 8.55 9.99 K0 201746.12+571716.4
20178+5717 KR 50 AB 2016 15 129 2.1 8.55 9.99 K0 201746.12+571716.4

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