21111+3821 ES  207

 
 
21h 11m 09.50s +38 20' 19.4" P.A. 245 sep 2.8 mag 10.37,10.76
 
 
Coord 2000
21111+3821
Discov num
ES  207
Comp
Coord arcsec 2000
21 11 09.50 +38 20 19.4
Date first
1904
Date last
2012
Obs
13
Pa first
244
Pa last
245
P.A. Now (θ)
245°
Sep first
2.5
Sep last
2.8
Sep. Now (ρ)
2.8"
Mag pri
10.37
Mag sec
10.76
delta mag (ΔM)
0.39
Spectral class
Pri motion ra
+000
Sec motion ra
-010
Pri motion dec
-098
Sec motion dec
-105
Notes
rPM=0.116 (< 0.3, Physical double)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
245
Precise sep
2.83
Constellation
Cygnus
Tycho2
3169-02334-2
last precise pa
245.3
last precise sep
2.797
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
21111+3821 ES 207 1998 11 244 2.4 10.37 10.76 D 211109.50+382019.4
21111+3821 ES 207 2002 12 246 2.8 10.37 10.76 D 211109.50+382019.4
21111+3821 ES 207 2012 13 245 2.8 10.37 10.76 211109.50+382019.4

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