20389+4741 A   746

 
 
20h 38m 56.75s +47 41' 12.4" P.A. 150 sep 2 mag 7.85,11.65 Sp A4IV
 
 
Coord 2000
20389+4741
Discov num
A   746
Comp
Coord arcsec 2000
20 38 56.75 +47 41 12.4
Date first
1904
Date last
2016
Obs
8
Pa first
143
Pa last
150
P.A. Now (θ)
150°
Sep first
2.1
Sep last
2.0
Sep. Now (ρ)
2"
Mag pri
7.85
Mag sec
11.65
delta mag (ΔM)
3.8
Spectral class
A4IV (white)
Pri motion ra
+010
Sec motion ra
+013
Pri motion dec
-014
Sec motion dec
-014
Notes
rPM=0.157 (< 0.3, Physical double)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
150.2
Precise sep
2.01
Cdsa2 id
A 746
Constellation
Cygnus
Tycho2
3578-02339-1
HD
196989
Ra deg
20.64909722222222
De deg
47.68677777777778
last precise pa
150.2
last precise sep
2.01
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20389+4741 A 746 2003 7 149 1.9 7.85 11.65 A4IV 203856.75+474112.4
20389+4741 A 746 2016 8 150 2.0 7.85 11.65 A4IV 203856.75+474112.4

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