20039+4411 ES   85AC

 
 
20h 03m 52.48s +44 11' 31.9" P.A. 84.00 sep 10.7 mag 10.52,12.50 Sp A0
 
 
Coord 2000
20039+4411
Discov num
ES   85
Comp
AC
Coord arcsec 2000
20 03 52.48 +44 11 31.9
Date first
1892
Date last
2017
Obs
13
Pa first
90
Pa last
84
P.A. Now (θ)
84°
Sep first
11.3
Sep last
10.7
Sep. Now (ρ)
10.7"
Mag pri
10.52
Mag sec
12.50
delta mag (ΔM)
1.98
Spectral class
A0 (white)
Pri motion ra
+000
Sec motion ra
-004
Pri motion dec
-010
Sec motion dec
-002
Notes
N (See Notes)
Visually invisible, K-band or other infrared star rPM=0.894
This double is not physical.
 
 
20039+4411 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 20039+4411 ES 85 AB 1828 2017 14 33 2.3 10.52 11.20 0.68
Show 20039+4411 ES 85 AC 1892 2017 13 84 10.7 10.52 12.50 1.98 <===
Show 20039+4411 ES 85 AD 1892 2017 9 308 11.3 10.52 13.10 2.58
Quadruple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
84.3
Precise sep
10.667
Constellation
Cygnus
Tycho2
3162-00108-1
Gaia DR2
61712491776
HD
190586
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20039+4411 ES 85 AC 1998 8 86 10.5 10.52 12.00 A0 D 200352.48+441131.9
20039+4411 ES 85 AC 2003 10 85 10.6 10.52 12.00 A0 N D 200352.48+441131.9
20039+4411 ES 85 AC 2015 11 84 10.7 10.52 12.00 A0 N 200352.48+441131.9
20039+4411 ES 85 AC 2017 13 84 10.7 10.52 12.50 A0 N 200352.48+441131.9

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