20457+0430 A  2285AB

 
 
20h 45m 42.18s +04 30' 10.2" P.A. 221 sep 7.5 mag 9.84,14.80 Sp G0
 
 
Coord 2000
20457+0430
Discov num
A  2285
Comp
AB
Coord arcsec 2000
20 45 42.18 +04 30 10.2
Date first
1910
Date last
2006
Obs
8
Pa first
202
Pa last
221
P.A. Now (θ)
221°
Sep first
3.8
Sep last
7.5
Sep. Now (ρ)
7.5"
Mag pri
9.84
Mag sec
14.80
delta mag (ΔM)
4.96
Spectral class
G0 (yellow)
Pri motion ra
+031
Sec motion ra
Pri motion dec
+021
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
20457+0430 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 20457+0430 A 2285 AB 1910 2006 8 221 7.5 9.84 14.80 4.96 <===
Show 20457+0430 A 2285 AC 1918 2006 5 116 33.5 9.84 12.40 2.56
Triple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Delphinus
last precise pa
221.2
last precise sep
7.5
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20457+0430 A 2285 AB 2006 7 221 7.5 9.84 14.80 G0 D 204542.18+043010.2

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