20306+3029 ES  505

 
 
20h 30m 36.68s +30 29' 25.4" P.A. 15 sep 2.1 mag 11.40,12.20
 
 
Coord 2000
20306+3029
Discov num
ES  505
Comp
Coord arcsec 2000
20 30 36.68 +30 29 25.4
Date first
1907
Date last
2015
Obs
6
Pa first
13
Pa last
15
P.A. Now (θ)
15°
Sep first
1.9
Sep last
2.1
Sep. Now (ρ)
2.1"
Mag pri
11.40
Mag sec
12.20
delta mag (ΔM)
0.8
Spectral class
Pri motion ra
-008
Sec motion ra
-008
Pri motion dec
-025
Sec motion dec
-025
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
14.5
Precise sep
2.114
Constellation
Cygnus
Tycho2
2685-00569-1
Gaia DR2
48831702144
HD
334550
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20306+3029 ES 505 1999 5 15 2.2 11.40 12.20 203036.68+302925.4
20306+3029 ES 505 2015 6 15 2.1 11.40 12.20 203036.68+302925.4

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