20135+3828 ES 2121AC

 
 
20h 13m 32.32s +38 28' 23.4" P.A. 233 sep 3.5 mag 11.40,12.80 Sp A2
 
 
Coord 2000
20135+3828
Discov num
ES 2121
Comp
AC
Coord arcsec 2000
20 13 32.32 +38 28 23.4
Date first
1924
Date last
2015
Obs
4
Pa first
234
Pa last
233
P.A. Now (θ)
233°
Sep first
3.1
Sep last
3.5
Sep. Now (ρ)
3.5"
Mag pri
11.40
Mag sec
12.80
delta mag (ΔM)
1.4
Spectral class
A2 (white)
Pri motion ra
+010
Sec motion ra
Pri motion dec
+002
Sec motion dec
Notes
B (Blue magnitudes)
Nature of this double is uncertain.
 
 
20135+3828 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 20135+3828 TDT2103 AB 1991 1991 1 181 1.1 11.40 11.62 0.22
Show 20135+3828 ES 2121 AC 1924 2015 4 233 3.5 11.40 12.80 1.40 <===
Triple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
233
Precise sep
3.531
Constellation
Cygnus
SAO
69638
Tycho2
3151-02624-1
Gaia DR2
85915482112
HD
228409
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20135+3828 ES 2121 AC 1924 1 234 3.1 12.27 12.53 B 201332.36+382823.3
20135+3828 ES 2121 AC 2002 2 233 3.5 11.40 12.80 B 201332.36+382823.3
20135+3828 ES 2121 AC 2011 3 234 3.6 11.40 12.80 B 201332.36+382823.3
20135+3828 ES 2121 AC 2015 4 233 3.5 11.40 12.80 A2 B 201332.32+382823.4

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