21110+3919 MLB 891

 
 
21h 10m 58.39s +39 19' 11.6" P.A. 253 sep 8.7 mag 11.27,12.70
 
 
Coord 2000
21110+3919
Discov num
MLB 891
Comp
Coord arcsec 2000
21 10 58.39 +39 19 11.6
Date first
1933
Date last
2016
Obs
12
Pa first
251
Pa last
253
P.A. Now (θ)
253°
Sep first
8.5
Sep last
8.7
Sep. Now (ρ)
8.7"
Mag pri
11.27
Mag sec
12.70
delta mag (ΔM)
1.43
Spectral class
Pri motion ra
+000
Sec motion ra
-002
Pri motion dec
-001
Sec motion dec
-004
Notes
rPM=0.806
This double is not physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
252.5
Precise sep
8.72
Constellation
Cygnus
Gaia DR2
17578827904
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
21110+3919 MLB 891 1937 2 253 9.7 10.33 10.80 211057.99+391759.8
21110+3919 MLB 891 2012 3 254 8.7 10.33 10.80 211057.99+391759.8
21110+3919 MLB 891 2015 7 253 8.3 11.27 12.70 211058.39+391911.6
21110+3919 MLB 891 2016 9 253 8.7 11.27 12.70 211058.39+391911.6

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