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
Cdsa2 id
HO 174 BC
Constellation
Cygnus
Ra deg
21.930016666666667
De deg
37.26694444444444
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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