20021+5439 MLR 580EF

 
 
20h 02m 29.86s +54 37' 39.2" P.A. 159 sep 0.6 mag 8.90,13.20 Sp K5
 
 
Coord 2000
20021+5439
Discov num
MLR 580
Comp
EF
Coord arcsec 2000
20 02 29.86 +54 37 39.2
Date first
1981
Date last
2008
Obs
3
Pa first
174
Pa last
159
P.A. Now (θ)
159°
Sep first
0.4
Sep last
0.6
Sep. Now (ρ)
0.6"
Mag pri
8.90
Mag sec
13.20
delta mag (ΔM)
4.3
Spectral class
K5 (yellow-orange)
Pri motion ra
+013
Sec motion ra
Pri motion dec
+018
Sec motion dec
Notes
N (See Notes)
Nature of this double is uncertain.
 
 
20021+5439 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 20021+5439 BU 426 AB 1877 2016 20 307 5.9 8.53 10.50 1.97
Show 20021+5439 BU 426 AC 1877 2015 17 53 163.2 8.53 8.39 0.14
Show 20021+5439 BU 427 CD 1877 2011 15 336 3.1 8.39 10.18 1.79
Show 20021+5439 ENG 68 CE 1884 2015 13 158 160.3 8.39 8.92 0.53
Show 20021+5439 MLR 580 EF 1981 2008 3 159 0.6 8.90 13.20 4.30 <===
Sextuple system
6 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
159
Precise sep
0.563
Constellation
Cygnus
SAO
32230
Tycho2
3940-00818-1
Gaia DR2
02752518400
HD
235089
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20021+5439 MLR 580 EF 2008 3 159 0.6 8.90 13.20 K5 N 200229.86+543739.2

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