21098+3504 ES 2257BC

 
 
21h 09m 46.63s +35 04' 20.7" P.A. 260 sep 5.6 mag 11.46,13.60
 
 
Coord 2000
21098+3504
Discov num
ES 2257
Comp
BC
Coord arcsec 2000
21 09 46.63 +35 04 20.7
Date first
1926
Date last
2012
Obs
5
Pa first
271
Pa last
260
P.A. Now (θ)
260°
Sep first
4.2
Sep last
5.6
Sep. Now (ρ)
5.6"
Mag pri
11.46
Mag sec
13.60
delta mag (ΔM)
2.14
Spectral class
Pri motion ra
+002
Sec motion ra
-009
Pri motion dec
+006
Sec motion dec
+002
Notes
rPM=1.27
This double is not physical.
 
 
21098+3504 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 21098+3504 ES 2257 AB 1926 2012 8 266 13.7 11.29 11.46 0.17
Show 21098+3504 ES 2257 BC 1926 2012 5 260 5.6 11.46 13.60 2.14 <===
Triple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
260.3
Precise sep
5.61
Cdsa2 id
ES 2257 BC
Constellation
Cygnus
Ra deg
21.162952777777775
De deg
35.07241666666667
last precise pa
260.3
last precise sep
5.61
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
21098+3504 ES 2257 BC 1926 1 271 4.2 11.46 13.60 210946.63+350420.7
21098+3504 ES 2257 BC 2002 2 262 5.4 11.46 13.60 210946.63+350420.7
21098+3504 ES 2257 BC 2011 3 261 5.5 11.46 13.60 210946.63+350420.7
21098+3504 ES 2257 BC 2012 4 260 5.6 11.46 13.60 210946.63+350420.7

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