21073+3857 MLB 889

 
 
21h 07m 18.20s +38 57' 18.4" P.A. 5 sep 7 mag 10.20,11.50
 
 
Coord 2000
21073+3857
Discov num
MLB 889
Comp
Coord arcsec 2000
21 07 18.20 +38 57 18.4
Date first
1933
Date last
2015
Obs
9
Pa first
1
Pa last
5
P.A. Now (θ)
Sep first
5.8
Sep last
7.0
Sep. Now (ρ)
7"
Mag pri
10.20
Mag sec
11.50
delta mag (ΔM)
1.3
Spectral class
Pri motion ra
-003
Sec motion ra
Pri motion dec
-003
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
4.5
Precise sep
7.034
Constellation
Cygnus
Gaia DR2
78212066816
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
21073+3857 MLB 889 1933 1 1 5.8 10.20 11.50 210720.00+385700.0
21073+3857 MLB 889 2008 2 4 7.0 10.20 11.50 210720.00+385700.0
21073+3857 MLB 889 2010 5 7 6.6 10.20 11.50 210718.20+385718.4
21073+3857 MLB 889 2015 6 5 7.0 10.20 11.50 210718.20+385718.4

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