20425+4916 ARG  39BC

 
 
20h 42m 29.85s +49 15' 45.7" P.A. 102 sep 34.8 mag 8.93,13.32 Sp K0
 
 
Coord 2000
20425+4916
Discov num
ARG  39
Comp
BC
Coord arcsec 2000
20 42 29.85 +49 15 45.7
Date first
1906
Date last
2013
Obs
9
Pa first
127
Pa last
102
P.A. Now (θ)
102°
Sep first
31.0
Sep last
34.8
Sep. Now (ρ)
34.8"
Mag pri
8.93
Mag sec
13.32
delta mag (ΔM)
4.39
Spectral class
K0 (yellow-orange)
Pri motion ra
-080
Sec motion ra
+010
Pri motion dec
-101
Sec motion dec
-001
Notes
N (See Notes)
rPM=1.044
This double is not physical.
 
 
20425+4916 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 20425+4916 ARG 39 AB 1899 2015 62 183 15.1 8.42 8.93 0.51
Show 20425+4916 ARG 39 AF 1909 2013 5 259 34.2 8.42 14.00 5.58
Show 20425+4916 ARG 39 AG 1909 2013 5 342 52.2 8.42 13.64 5.22
Show 20425+4916 ARG 39 BC 1906 2013 9 102 34.8 8.93 13.32 4.39 <===
Show 20425+4916 ARG 39 BD 1907 2013 6 240 21.4 8.93 14.30 5.37
Show 20425+4916 ARG 39 BE 1909 2013 4 55 43.0 8.93 15.00 6.07
Septuple system
7 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
102
Precise sep
34.778
Cdsa2 id
ARG 39 BC
Constellation
Cygnus
Ra deg
20.708291666666668
De deg
49.26269444444444
last precise pa
102
last precise sep
34.778
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20425+4916 ARG 39 BC 2003 7 104 34.3 8.93 12.80 K0 D 204229.85+491545.7
20425+4916 ARG 39 BC 2013 9 102 34.8 8.93 13.32 K0 N 204229.85+491545.7

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