20039+4411 ES   85AB

 
 
20h 03m 52.48s +44 11' 31.9" P.A. 33.00 sep 2.3 mag 10.52,11.20 Sp A0
 
 
Coord 2000
20039+4411
Discov num
ES   85
Comp
AB
Coord arcsec 2000
20 03 52.48 +44 11 31.9
Date first
1828
Date last
2017
Obs
14
Pa first
40
Pa last
33
P.A. Now (θ)
33°
Sep first
4.0
Sep last
2.3
Sep. Now (ρ)
2.3"
Mag pri
10.52
Mag sec
11.20
delta mag (ΔM)
0.68
Spectral class
A0 (white)
Pri motion ra
-002
Sec motion ra
-002
Pri motion dec
-003
Sec motion dec
-003
Notes
N (See Notes)
Visually invisible, K-band or other infrared star Nature of this double is uncertain.
 
 
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
33.3
Precise sep
2.25
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 AB 2002 9 34 2.5 10.52 11.20 A0 200352.48+441131.9
20039+4411 ES 85 AB 2017 14 33 2.3 10.52 11.20 A0 N 200352.48+441131.9

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