20399+3154 TDT2456

 
 
20h 39m 53.07s +31 54' 12.4" P.A. 18.00 sep 0.7 mag 11.95,12.18
 
 
Coord 2000
20399+3154
Discov num
TDT2456
Comp
Coord arcsec 2000
20 39 53.07 +31 54 12.4
Date first
1991
Date last
1991
Obs
1
Pa first
18
Pa last
18
P.A. Now (θ)
18°
Sep first
0.7
Sep last
0.7
Sep. Now (ρ)
0.7"
Mag pri
11.95
Mag sec
12.18
delta mag (ΔM)
0.23
Spectral class
Pri motion ra
+019
Sec motion ra
+019
Pri motion dec
+018
Sec motion dec
+018
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
17.7
Precise sep
0.68
Constellation
Cygnus
Tycho2
2690-00391-1
Gaia DR2
64108495872
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20399+3154 TDT2456 1991 1 18 0.7 11.95 12.18 203953.07+315412.4

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