20555+4722 TOB 201CD

 
 
20H 55M 30.46S +47 21' 24.5" P.A. 71 SEP 10.1 MAG 16.00,16.70
 
 
Coord 2000
20555+4722
Discov num
TOB 201
Comp
CD
Coord arcsec 2000
20 55 30.46 +47 21 24.5
Date first
1983
Date last
2003
Obs
3
Pa first
71
Pa last
71
P.A. Now (θ)
71°
Sep first
9.9
Sep last
10.1
Sep. Now (ρ)
10.1"
Mag pri
16.00
Mag sec
16.70
delta mag (ΔM)
0.7
Spectral class
Pri motion ra
-002
Sec motion ra
-022
Pri motion dec
-018
Sec motion dec
-027
Notes
rPM=0.63
Nature of this double is uncertain.
 
 
20555+4722 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 20555+4722 TOB 201 AB 1983 2003 3 83 19.9 14.10 14.60 0.50
Show 20555+4722 TOB 201 AC 1983 2003 3 146 13.5 14.10 16.00 1.90
Show 20555+4722 TOB 201 AD 1983 2003 3 116 18.8 14.10 16.70 2.60
Show 20555+4722 TOB 201 CD 1983 2003 3 71 10.1 16.00 16.70 0.70 <===
Quadruple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Cygnus
last precise pa
71.4
last precise sep
10.095