20358+5435 ES  991AB

 
 
20h 35m 45.34s +54 35' 16.7" P.A. 297 sep 15.9 mag 9.33,10.30 Sp K7
 
 
Coord 2000
20358+5435
Discov num
ES  991
Comp
AB
Coord arcsec 2000
20 35 45.34 +54 35 16.7
Date first
1901
Date last
2018
Obs
10
Pa first
298
Pa last
297
P.A. Now (θ)
297°
Sep first
16.1
Sep last
15.9
Sep. Now (ρ)
15.9"
Mag pri
9.33
Mag sec
10.30
delta mag (ΔM)
0.97
Spectral class
K7 (yellow-orange)
Pri motion ra
-002
Sec motion ra
-006
Pri motion dec
-005
Sec motion dec
-006
Notes
rPM=0.486
Nature of this double is uncertain.
 
 
20358+5435 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 20358+5435 ES 991 AB 1901 2018 10 297 15.9 9.33 10.30 0.97 <===
Show 20358+5435 ES 991 AC 1901 2018 11 107 61.7 9.33 10.79 1.46
Show 20358+5435 ES 991 CD 1910 2015 4 120 2.6 10.79 13.20 2.41
Quadruple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
297.3
Precise sep
15.902
Constellation
Cygnus
SAO
32720
Tycho2
3954-01980-1
Gaia DR2
63189146112
HD
235289
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20358+5435 ES 991 AB 2006 5 297 16.2 9.33 10.30 K7 D 203545.34+543516.7
20358+5435 ES 991 AB 2017 7 298 16.0 9.33 10.30 K7 203545.34+543516.7
20358+5435 ES 991 AB 2018 9 298 16.2 9.33 10.30 K7 203545.34+543516.7

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