21254+4818 ES 1102BC

 
 
21h 25m 23.87s +48 18' 10.1" P.A. 36 sep 6.8 mag 11.50,12.00
 
 
Coord 2000
21254+4818
Discov num
ES 1102
Comp
BC
Coord arcsec 2000
21 25 23.87 +48 18 10.1
Date first
1900
Date last
2011
Obs
6
Pa first
47
Pa last
36
P.A. Now (θ)
36°
Sep first
5.4
Sep last
6.8
Sep. Now (ρ)
6.8"
Mag pri
11.50
Mag sec
12.00
delta mag (ΔM)
0.5
Spectral class
Pri motion ra
-004
Sec motion ra
+001
Pri motion dec
-025
Sec motion dec
-003
Notes
R (Red magnitudes)
rPM=0.891
This double is not physical.
 
 
21254+4818 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 21254+4818 ES 1102 AB 1900 2003 5 195 48.7 10.68 11.10 0.42
Show 21254+4818 ES 1102 BC 1900 2011 6 36 6.8 11.50 12.00 0.50 <===
Show 21254+4818 CRB 7 Ca,Cb 2011 2011 1 110 1.6 12.70 12.80 0.10
Show 21254+4818 ES 1102 CD 1911 2011 2 110 3.6 12.00 13.00 1.00
Quintuple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
36.3
Precise sep
6.789
Constellation
Cygnus
last precise pa
36.3
last precise sep
6.789
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
21254+4818 ES 1102 BC 1911 3 50 5.0 12.30 13.00 212515.00+481800.0
21254+4818 ES 1102 BC 2011 4 36 6.8 12.40 13.00 212524.26+481813.5

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