20306+3850 SEI1144

 
 
20h 30m 34.73s +38 50' 12.8" P.A. 177 sep 18.1 mag 11.39,13.00
 
 
Coord 2000
20306+3850
Discov num
SEI1144
Comp
Coord arcsec 2000
20 30 34.73 +38 50 12.8
Date first
1895
Date last
2015
Obs
10
Pa first
159
Pa last
177
P.A. Now (θ)
177°
Sep first
13.7
Sep last
18.1
Sep. Now (ρ)
18.1"
Mag pri
11.39
Mag sec
13.00
delta mag (ΔM)
1.61
Spectral class
Pri motion ra
+004
Sec motion ra
-037
Pri motion dec
-010
Sec motion dec
-050
Notes
rPM=0.921
This double is not physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
177.4
Precise sep
18.075
Constellation
Cygnus
SAO
70124
Tycho2
3153-00819-1
Gaia DR2
70956120960
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20306+3850 SEI1144 1998 3 175 17.4 11.39 13.00 D 203034.73+385012.8
20306+3850 SEI1144 2002 4 176 17.6 11.39 13.00 D 203034.73+385012.8
20306+3850 SEI1144 2010 5 176 17.7 11.39 13.00 203034.73+385012.8
20306+3850 SEI1144 2015 6 177 18.1 11.39 13.00 203034.73+385012.8

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