21102+3844 SEI1426

 
 
21h 10m 14.39s +38 44' 10.5" P.A. 20 sep 17.6 mag 10.23,11.96
 
 
Coord 2000
21102+3844
Discov num
SEI1426
Comp
Coord arcsec 2000
21 10 14.39 +38 44 10.5
Date first
1895
Date last
2012
Obs
8
Pa first
15
Pa last
20
P.A. Now (θ)
20°
Sep first
17.0
Sep last
17.6
Sep. Now (ρ)
17.6"
Mag pri
10.23
Mag sec
11.96
delta mag (ΔM)
1.73
Spectral class
Pri motion ra
-011
Sec motion ra
-001
Pri motion dec
-008
Sec motion dec
-009
Notes
rPM=0.739
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
20
Precise sep
17.6
Constellation
Cygnus
Tycho2
3169-02123-1
last precise pa
20
last precise sep
17.6
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
21102+3844 SEI1426 1998 5 19 17.6 10.23 11.71 D 211014.39+384410.5
21102+3844 SEI1426 2002 6 20 17.6 10.23 11.71 D 211014.39+384410.5
21102+3844 SEI1426 2012 7 20 17.6 10.23 11.96 211014.39+384410.5

If you need more information about this double, apply for a data request form to the WDS.