20585+5028 STF2741AC

 
 
20h 58m 30.03s +50 27' 42.4" P.A. 355 sep 138.6 mag 5.94,11.77 Sp B5Vn
 
 
Coord 2000
20585+5028
Discov num
STF2741
Comp
AC
Coord arcsec 2000
20 58 30.03 +50 27 42.4
Date first
1879
Date last
2003
Obs
5
Pa first
356
Pa last
355
P.A. Now (θ)
355°
Sep first
139.4
Sep last
138.6
Sep. Now (ρ)
138.6"
Mag pri
5.94
Mag sec
11.77
delta mag (ΔM)
5.83
Spectral class
B5Vn (blue-white)
Pri motion ra
+010
Sec motion ra
-003
Pri motion dec
+003
Sec motion dec
-001
Notes
N (See Notes)
rPM=1.303
This double is not physical.
 
 
20585+5028 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 33034 20585+5028 STF2741 AB 1783 2017 151 25 2.0 5.94 6.79 0.85
Show 20585+5028 STF2741 AC 1879 2003 5 355 138.6 5.94 11.77 5.83 <===
Show 20585+5028 BU 9007 CD 1999 2003 2 51 12.8 12.30 13.30 1.00
Quadruple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
355.4
Precise sep
138.58
Cdsa2 id
STF 2741 AC
Constellation
Cygnus
Ra deg
20.97500833333333
De deg
50.46177777777778
last precise pa
355.4
last precise sep
138.58
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20585+5028 STF2741 AC 1999 4 355 138.1 5.94 10.90 B5Vn D 205830.03+502742.4
20585+5028 STF2741 AC 2003 5 355 138.6 5.94 12.30 B5Vn N D 205830.03+502742.4

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