20255+4006 D    22AB

 
 
20h 25m 31.16s +40 05' 50.8" P.A. 163 sep 2.9 mag 8.15,9.48 Sp F8V
 
 
Coord 2000
20255+4006
Discov num
D    22
Comp
AB
Coord arcsec 2000
20 25 31.16 +40 05 50.8
Date first
1875
Date last
2016
Obs
71
Pa first
140
Pa last
163
P.A. Now (θ)
163°
Sep first
2.8
Sep last
2.9
Sep. Now (ρ)
2.9"
Mag pri
8.15
Mag sec
9.48
delta mag (ΔM)
1.33
Spectral class
F8V (yellow-white)
Pri motion ra
+092
Sec motion ra
Pri motion dec
+019
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
20255+4006 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 20255+4006 D 22 AB 1875 2016 71 163 2.9 8.15 9.48 1.33 <===
Show 20255+4006 D 22 AC 1905 1998 5 114 18.1 8.15 13.20 5.05
Show 20255+4006 POP 224 AD 1928 2009 6 98 71.2 8.15 11.58 3.43
Quadruple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
163.1
Precise sep
2.936
Constellation
Cygnus
SAO
70001
Tycho2
3156-00437-1
Gaia DR2
01017759616
HD
194685
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20255+4006 D 22 AB 2008 63 162 2.8 8.15 9.48 F8V 202531.14+400553.7
20255+4006 D 22 AB 2009 65 163 2.9 8.15 9.48 F8V 202531.14+400553.7
20255+4006 D 22 AB 2010 68 163 2.8 8.15 9.48 F8V 202531.14+400553.7
20255+4006 D 22 AB 2011 70 162 2.9 8.15 9.48 F8V 202531.14+400553.7
20255+4006 D 22 AB 2016 71 163 2.9 8.15 9.48 F8V 202531.16+400550.8

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