21558+3716 HO  174BC

 
 
21h 55m 48.06s +37 16' 01.0" P.A. 224 sep 163 mag 10.75,11.50 Sp F2
 
 
Coord 2000
21558+3716
Discov num
HO  174
Comp
BC
Coord arcsec 2000
21 55 48.06 +37 16 01.0
Date first
1991
Date last
2015
Obs
5
Pa first
224
Pa last
224
P.A. Now (θ)
224°
Sep first
163.2
Sep last
163.0
Sep. Now (ρ)
163"
Mag pri
10.75
Mag sec
11.50
delta mag (ΔM)
0.75
Spectral class
F2 (yellow-white)
Pri motion ra
-011
Sec motion ra
-020
Pri motion dec
-013
Sec motion dec
-004
Notes
N W (See Notes, )
rPM=0.624
Nature of this double is uncertain.
 
 
21558+3716 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 21558+3716 HO 174 AB 1881 2015 21 335 7.6 10.38 10.75 0.37
Show 21558+3716 HO 174 AC 1881 2015 14 226 160.4 10.38 11.50 1.12
Show 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
 
 
Precise pa
223.8
Precise sep
162.95
Constellation
Cygnus
last precise pa
223.8
last precise sep
162.95
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
21558+3716 HO 174 BC 2012 1 228 165.3 10.75 12.33 F2 215507.50+371600.0
21558+3716 HO 174 BC 2015 5 224 163.0 10.75 11.50 F2 N 215548.06+371601.0

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