20414+4758 ES  809AB

 
 
20h 41m 24.21s +47 59' 40.6" P.A. 290 sep 1.5 mag 11.46,12.03 Sp OB-
 
 
Coord 2000
20414+4758
Discov num
ES  809
Comp
AB
Coord arcsec 2000
20 41 24.21 +47 59 40.6
Date first
1909
Date last
1991
Obs
4
Pa first
271
Pa last
290
P.A. Now (θ)
290°
Sep first
2.6
Sep last
1.5
Sep. Now (ρ)
1.5"
Mag pri
11.46
Mag sec
12.03
delta mag (ΔM)
0.57
Spectral class
OB- (blue)
Pri motion ra
-005
Sec motion ra
-005
Pri motion dec
-003
Sec motion dec
-003
Notes
Nature of this double is uncertain.
 
 
20414+4758 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 20414+4758 ES 809 AB 1909 1991 4 290 1.5 11.46 12.03 0.57 <===
Show 20414+4758 SKF2394 AC 2000 2003 4 76 3.5 11.46 13.00 1.54
Triple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
289.7
Precise sep
1.49
Cdsa2 id
ES 809 AB
Constellation
Cygnus
Ra deg
20.690058333333333
De deg
47.99461111111111
last precise pa
289.7
last precise sep
1.49
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20414+4758 ES 809 AB 1991 4 290 1.5 11.46 12.03 OB- 204124.21+475940.6

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