21089+4815 ARG  42BC

 
 
21h 08m 54.44s +48 14' 59.3" P.A. 306 sep 45.2 mag 9.67,11.29 Sp G0
 
 
Coord 2000
21089+4815
Discov num
ARG  42
Comp
BC
Coord arcsec 2000
21 08 54.44 +48 14 59.3
Date first
1899
Date last
2010
Obs
11
Pa first
304
Pa last
306
P.A. Now (θ)
306°
Sep first
44.8
Sep last
45.2
Sep. Now (ρ)
45.2"
Mag pri
9.67
Mag sec
11.29
delta mag (ΔM)
1.62
Spectral class
G0 (yellow)
Pri motion ra
-005
Sec motion ra
-004
Pri motion dec
-021
Sec motion dec
-001
Notes
rPM=0.928
This double is not physical.
 
 
21089+4815 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 21089+4815 ARG 42 AB 1899 2013 30 60 21.2 8.81 9.67 0.86
Show 21089+4815 ARG 42 AC 1899 2010 12 333 41.2 8.81 11.29 2.48
Show 21089+4815 ARG 42 BC 1899 2010 11 306 45.2 9.67 11.29 1.62 <===
Triple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
305.8
Precise sep
45.22
Cdsa2 id
ARG 42 BC
Constellation
Cygnus
Ra deg
21.148455555555554
De deg
48.249805555555554
last precise pa
305.8
last precise sep
45.22
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
21089+4815 ARG 42 BC 2000 9 306 45.5 9.67 11.29 G0 D 210854.44+481459.3
21089+4815 ARG 42 BC 2010 10 306 45.2 9.67 11.29 G0 D 210854.44+481459.3

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