20231+4037 TDT2228

 
 
20h 23m 04.98s +40 36' 36.0" P.A. 242 sep 0.4 mag 9.41,10.39 Sp B9
 
 
Coord 2000
20231+4037
Discov num
TDT2228
Comp
Coord arcsec 2000
20 23 04.98 +40 36 36.0
Date first
1991
Date last
2011
Obs
2
Pa first
251
Pa last
242
P.A. Now (θ)
242°
Sep first
0.4
Sep last
0.4
Sep. Now (ρ)
0.4"
Mag pri
9.41
Mag sec
10.39
delta mag (ΔM)
0.98
Spectral class
B9 (blue-white)
Pri motion ra
+003
Sec motion ra
+003
Pri motion dec
-003
Sec motion dec
-003
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
241.7
Precise sep
0.38
Constellation
Cygnus
SAO
49554
Tycho2
3156-00936-1
Gaia DR2
67962683648
HD
229177
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20231+4037 TDT2228 1991 1 251 0.4 9.41 10.39 202304.98+403636.0
20231+4037 TDT2228 2011 2 242 0.4 9.41 10.39 B9 202304.98+403636.0

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