21558+3716 HO  174CD

 
 
21h 55m 38.57s +37 14' 03.5" P.A. 262 sep 6 mag 11.50,11.90
 
 
Coord 2000
21558+3716
Discov num
HO  174
Comp
CD
Coord arcsec 2000
21 55 38.57 +37 14 03.5
Date first
1881
Date last
2015
Obs
16
Pa first
269
Pa last
262
P.A. Now (θ)
262°
Sep first
6.3
Sep last
6.0
Sep. Now (ρ)
6"
Mag pri
11.50
Mag sec
11.90
delta mag (ΔM)
0.4
Spectral class
Pri motion ra
+020
Sec motion ra
-026
Pri motion dec
-004
Sec motion dec
-010
Notes
N W R (See Notes, , Red magnitudes)
rPM=1.665
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 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
261.8
Precise sep
5.98
Cdsa2 id
HO 174 CD
Constellation
Cygnus
Ra deg
21.92738055555556
De deg
37.23430555555556
last precise pa
261.8
last precise sep
5.98
 
 
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 CD 2004 8 82 6.1 10.80 10.80 N D 215538.58+371403.5
21558+3716 HO 174 CD 2010 9 82 5.9 12.32 12.40 N D 215538.58+371403.5
21558+3716 HO 174 CD 2011 11 82 6.0 12.32 12.40 N D 215538.58+371403.5
21558+3716 HO 174 CD 2012 13 82 5.0 12.70 12.33 N 215538.08+371402.7
21558+3716 HO 174 CD 2015 15 262 6.0 11.50 11.90 N R 215538.57+371403.5

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