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
Constellation
Cygnus
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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