20357+3747 TOB 190

 
 
20h 35m 41.37s +37 46' 47.6" P.A. 68 sep 17.8 mag 9.80,12.60 Sp B8
 
 
Coord 2000
20357+3747
Discov num
TOB 190
Comp
Coord arcsec 2000
20 35 41.37 +37 46 47.6
Date first
1983
Date last
2014
Obs
8
Pa first
69
Pa last
68
P.A. Now (θ)
68°
Sep first
17.7
Sep last
17.8
Sep. Now (ρ)
17.8"
Mag pri
9.80
Mag sec
12.60
delta mag (ΔM)
2.8
Spectral class
B8 (blue-white)
Pri motion ra
-003
Sec motion ra
-003
Pri motion dec
-005
Sec motion dec
+000
Notes
rPM=0.857
This double is not physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
67.5
Precise sep
17.77
Constellation
Cygnus
SAO
70243
Tycho2
3153-00112-1
Gaia DR2
71396189184
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20357+3747 TOB 190 1998 2 68 17.8 9.80 12.60 D 203541.37+374647.6
20357+3747 TOB 190 2009 3 69 17.8 9.80 12.60 D 203541.37+374647.6
20357+3747 TOB 190 2010 5 68 17.7 9.80 12.60 B8 203541.37+374647.6
20357+3747 TOB 190 2014 8 68 17.8 9.80 12.60 B8 203541.37+374647.6

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