20138+2945 TOB 179

 
 
20h 13m 49.93s +29 44' 46.5" P.A. 91 sep 23.6 mag 10.74,12.98 Sp B2
 
 
Coord 2000
20138+2945
Discov num
TOB 179
Comp
Coord arcsec 2000
20 13 49.93 +29 44 46.5
Date first
1984
Date last
2015
Obs
9
Pa first
92
Pa last
91
P.A. Now (θ)
91°
Sep first
22.7
Sep last
23.6
Sep. Now (ρ)
23.6"
Mag pri
10.74
Mag sec
12.98
delta mag (ΔM)
2.24
Spectral class
B2 (blue-white)
Pri motion ra
-004
Sec motion ra
+011
Pri motion dec
-021
Sec motion dec
-017
Notes
rPM=0.726
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
90.6
Precise sep
23.638
Constellation
Cygnus
Tycho2
2166-00241-1
Gaia DR2
64174648576
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20138+2945 TOB 179 1999 2 91 23.5 10.60 12.40 D 201349.93+294446.5
20138+2945 TOB 179 2002 3 91 23.5 10.60 12.40 D 201349.93+294446.5
20138+2945 TOB 179 2010 4 91 23.3 10.74 12.98 B2 201349.93+294446.5
20138+2945 TOB 179 2015 5 91 23.6 10.74 12.98 B2 201349.93+294446.5

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