20585+5028 STF2741AB

 
 
20h 58m 30.03s +50 27' 42.4" P.A. 25 sep 2 mag 5.94,6.79 Sp B5Vn
 
 
Coord 2000
20585+5028
Discov num
STF2741
Comp
AB
Coord arcsec 2000
20 58 30.03 +50 27 42.4
Date first
1783
Date last
2017
Obs
151
Pa first
44
Pa last
25
P.A. Now (θ)
25°
Sep first
1.2
Sep last
2.0
Sep. Now (ρ)
2"
Mag pri
5.94
Mag sec
6.79
delta mag (ΔM)
0.85
Spectral class
B5Vn (blue-white)
Pri motion ra
+005
Sec motion ra
+005
Pri motion dec
+003
Sec motion dec
+003
Notes
N V (See Notes, Proper motion indicates physical)
This double is 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
25.2
Precise sep
1.956
Cdsa2 id
STF 2741 AB
Constellation
Cygnus
SAO
33034
Tycho2
3583-01164-1
HD
199955
HR
8040
Ra deg
20.97500833333333
De deg
50.46177777777778
last precise pa
25.2
last precise sep
1.956
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20585+5028 STF2741 AB 2006 143 26 1.9 5.94 6.79 B5Vn D 205830.03+502742.4
20585+5028 STF2741 AB 2009 146 25 1.9 5.94 6.79 B5Vn D 205830.03+502742.4
20585+5028 STF2741 AB 2012 147 25 1.9 5.94 6.79 B5Vn N D 205830.03+502742.4
20585+5028 STF2741 AB 2013 153 25 2.0 5.94 6.79 B5Vn N D 205830.03+502742.4
20585+5028 STF2741 AB 2015 146 25 2.0 5.94 6.79 B5Vn NV 205830.03+502742.4
20585+5028 STF2741 AB 2016 148 25 2.0 5.94 6.79 B5Vn NV 205830.03+502742.4
20585+5028 STF2741 AB 2017 151 25 2.0 5.94 6.79 B5Vn NV 205830.03+502742.4

If you need more information about this double, apply for a data request form to the WDS.