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
Cdsa2 id
ES 1102 BC
Constellation
Cygnus
Ra deg
21.423297222222224
De deg
48.30280555555555
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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