20330+3144 ES  365AB

 
 
20h 33m 02.60s +31 44' 08.3" P.A. 263 sep 25.7 mag 8.48,11.80 Sp K2 dist. 436.68 pc (1424.45 l.y.)
 
 
Coord 2000
20330+3144
Discov num
ES  365
Comp
AB
Coord arcsec 2000
20 33 02.60 +31 44 08.3
Date first
1901
Date last
2015
Obs
8
Pa first
263
Pa last
263
P.A. Now (θ)
263°
Sep first
24.9
Sep last
25.7
Sep. Now (ρ)
25.7"
Mag pri
8.48
Mag sec
11.80
delta mag (ΔM)
3.32
Spectral class
K2 (yellow-orange)
Pri motion ra
+004
Sec motion ra
+008
Pri motion dec
-003
Sec motion dec
+000
Notes
rPM=0.625
Nature of this double is uncertain.
 
 
20330+3144 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 20330+3144 ES 365 AB 1901 2015 8 263 25.7 8.48 11.80 3.32 <===
Show 20330+3144 ES 365 AC 1901 2015 8 319 33.6 8.48 11.67 3.19
Show 20330+3144 ES 365 CD 1906 2015 4 283 2.7 11.20 12.40 1.20
Quadruple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
263.3
Precise sep
25.679
Constellation
Cygnus
SAO
70179
HIP
101404
Tycho2
2686-00827-1
Gaia DR2
04247200384
BD
BD+31 4125
Distance
436.68
Distance ly
1424.45
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20330+3144 ES 365 AB 1999 5 263 25.7 8.48 11.80 K2 D 203302.60+314408.3
20330+3144 ES 365 AB 2002 6 264 25.6 8.48 11.80 K2 D 203302.60+314408.3
20330+3144 ES 365 AB 2013 7 264 25.5 8.48 11.80 K2 203302.60+314408.3
20330+3144 ES 365 AB 2015 8 263 25.7 8.48 11.80 K2 203302.60+314408.3

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