20237+3937 ALI1141

 
 
20h 23m 41.10s +39 37' 00.5" P.A. 21 sep 11.5 mag 10.90,12.00 Sp O9V
 
 
Coord 2000
20237+3937
Discov num
ALI1141
Comp
Coord arcsec 2000
20 23 41.10 +39 37 00.5
Date first
1892
Date last
2015
Obs
11
Pa first
8
Pa last
21
P.A. Now (θ)
21°
Sep first
7.3
Sep last
11.5
Sep. Now (ρ)
11.5"
Mag pri
10.90
Mag sec
12.00
delta mag (ΔM)
1.1
Spectral class
O9V (blue)
Pri motion ra
-030
Sec motion ra
-003
Pri motion dec
-032
Sec motion dec
-001
Notes
rPM=0.937
This double is not physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
20.6
Precise sep
11.476
Constellation
Cygnus
SAO
69949
Gaia DR2
41135007616
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20237+3937 ALI1141 1928 3 12 8.0 12.00 13.10 202308.57+393700.0
20237+3937 ALI1141 2002 4 20 11.1 10.90 12.00 202341.10+393700.5
20237+3937 ALI1141 2013 5 20 11.6 10.90 12.00 O9V 202341.10+393700.5
20237+3937 ALI1141 2015 7 20 11.5 10.90 12.00 O9V 202341.10+393700.5

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