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
 
 
Constellation
Cygnus
Tycho2
2710-00294-1
last precise pa
260.3
last precise sep
5.61