21558+3716 HO  174AC

 
 
21H 55M 48.33S +37 15' 54.1" P.A. 226 SEP 160.4 MAG 10.38,11.50 SP F2
 
 
Coord 2000
21558+3716
Discov num
HO  174
Comp
AC
Coord arcsec 2000
21 55 48.33 +37 15 54.1
Date first
1881
Date last
2015
Obs
14
Pa first
227
Pa last
226
P.A. Now (θ)
226°
Sep first
161.4
Sep last
160.4
Sep. Now (ρ)
160.4"
Mag pri
10.38
Mag sec
11.50
delta mag (ΔM)
1.12
Spectral class
F2 (yellow-white)
Pri motion ra
-007
Sec motion ra
-020
Pri motion dec
-016
Sec motion dec
-004
Notes
N (See Notes)
rPM=0.867
This double is not physical.
 
 
21558+3716 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 71853 21558+3716 HO 174 AB 1881 2015 20 335 7.6 10.38 10.75 0.37
Show 71853 21558+3716 HO 174 AC 1881 2015 14 226 160.4 10.38 11.50 1.12 <===
Show 71853 21558+3716 HO 174 BC 1991 2015 5 224 163.0 10.75 11.50 0.75
Show 21558+3716 HO 174 CD 1881 2015 16 262 6.0 11.50 11.90 0.40
Quadruple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Cygnus
SAO
71853
Tycho2
2731-00181-1
last precise pa
226.3
last precise sep
160.41