20169+5717 TDT2139

 
 
20h 16m 52.09s +57 16' 53.9" P.A. 101.00 sep 3.2 mag 11.75,12.66
 
 
Coord 2000
20169+5717
Discov num
TDT2139
Comp
Coord arcsec 2000
20 16 52.09 +57 16 53.9
Date first
1991
Date last
2015
Obs
4
Pa first
100
Pa last
101
P.A. Now (θ)
101°
Sep first
3.2
Sep last
3.2
Sep. Now (ρ)
3.2"
Mag pri
11.75
Mag sec
12.66
delta mag (ΔM)
0.91
Spectral class
Pri motion ra
-011
Sec motion ra
-011
Pri motion dec
+005
Sec motion dec
-001
Notes
rPM=0.497
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
101.1
Precise sep
3.21
Constellation
Cygnus
Tycho2
3945-00862-1
Gaia DR2
43646016896
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20169+5717 TDT2139 1991 1 100 3.2 11.75 12.66 201652.09+571653.9
20169+5717 TDT2139 2003 2 101 3.2 11.75 12.66 201652.09+571653.9
20169+5717 TDT2139 2015 3 101 3.2 11.75 12.66 201652.09+571653.9

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