20546+4042 ES 1685BC

 
 
20H 54M 44.02S +40 41' 45.9" P.A. 74 SEP 2.7 MAG 14.00,14.50
 
 
Coord 2000
20546+4042
Discov num
ES 1685
Comp
BC
Coord arcsec 2000
20 54 44.02 +40 41 45.9
Date first
1917
Date last
2011
Obs
3
Pa first
75
Pa last
74
P.A. Now (θ)
74°
Sep first
1.7
Sep last
2.7
Sep. Now (ρ)
2.7"
Mag pri
14.00
Mag sec
14.50
delta mag (ΔM)
0.5
Spectral class
Pri motion ra
+013
Sec motion ra
Pri motion dec
-004
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
20546+4042 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 20546+4042 ES 1685 AB 1892 2002 4 73 24.0 11.02 14.00 2.98
Show 20546+4042 ES 1685 BC 1917 2011 3 74 2.7 14.00 14.50 0.50 <===
Triple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Cygnus
last precise pa
73.5
last precise sep
2.74