20204+3840 SEI1088AB

 
 
20h 20m 18.47s +38 39' 29.5" P.A. 238 sep 4.4 mag 10.30,11.60
 
 
Coord 2000
20204+3840
Discov num
SEI1088
Comp
AB
Coord arcsec 2000
20 20 18.47 +38 39 29.5
Date first
1896
Date last
2013
Obs
7
Pa first
241
Pa last
238
P.A. Now (θ)
238°
Sep first
4.2
Sep last
4.4
Sep. Now (ρ)
4.4"
Mag pri
10.30
Mag sec
11.60
delta mag (ΔM)
1.3
Spectral class
Pri motion ra
+036
Sec motion ra
Pri motion dec
+019
Sec motion dec
Notes
R (Red magnitudes)
Nature of this double is uncertain.
 
 
20204+3840 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 20204+3840 SEI1088 AB 1896 2013 7 238 4.4 10.30 11.60 1.30 <===
Show 20204+3840 SEI1089 AC 1895 2013 10 17 28.2 10.30 10.47 0.17
Triple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
237.9
Precise sep
4.42
Constellation
Cygnus
last precise pa
237.9
last precise sep
4.42
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20204+3840 SEI1088 AB 1994 4 235 3.7 10.56 11.60 202019.18+383956.4
20204+3840 SEI1088 AB 2013 5 238 4.4 10.56 11.60 202019.18+383956.4

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