20244+4002 MLB  21

 
 
20h 24m 21.52s +40 02' 47.1" P.A. 14 sep 8.6 mag 11.70,12.00
 
 
Coord 2000
20244+4002
Discov num
MLB  21
Comp
Coord arcsec 2000
20 24 21.52 +40 02 47.1
Date first
1917
Date last
2015
Obs
37
Pa first
333
Pa last
14
P.A. Now (θ)
14°
Sep first
5.6
Sep last
8.6
Sep. Now (ρ)
8.6"
Mag pri
11.70
Mag sec
12.00
delta mag (ΔM)
0.3
Spectral class
Pri motion ra
-037
Sec motion ra
+002
Pri motion dec
-039
Sec motion dec
+026
Notes
rPM=1.41
This double is not physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
13.9
Precise sep
8.599
Constellation
Cygnus
Gaia DR2
36848106496
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20244+4002 MLB 21 1998 13 10 7.8 11.70 12.00 D 202421.52+400247.1
20244+4002 MLB 21 2007 17 12 8.2 11.70 12.00 D 202421.52+400247.1
20244+4002 MLB 21 2010 18 13 8.2 11.70 12.00 D 202421.52+400247.1
20244+4002 MLB 21 2013 20 14 8.5 11.70 12.00 202421.52+400247.1
20244+4002 MLB 21 2015 33 14 8.6 11.70 12.00 202421.52+400247.1

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