20047+4938 KU   58AB

 
 
20h 04m 40.14s +49 38' 30.6" P.A. 186 sep 2.9 mag 10.23,10.41 Sp A2
 
 
Coord 2000
20047+4938
Discov num
KU   58
Comp
AB
Coord arcsec 2000
20 04 40.14 +49 38 30.6
Date first
1901
Date last
2018
Obs
15
Pa first
187
Pa last
186
P.A. Now (θ)
186°
Sep first
2.9
Sep last
2.9
Sep. Now (ρ)
2.9"
Mag pri
10.23
Mag sec
10.41
delta mag (ΔM)
0.18
Spectral class
A2 (white)
Pri motion ra
+013
Sec motion ra
+007
Pri motion dec
+024
Sec motion dec
-016
Notes
rPM=1.482
This double is not physical.
 
 
20047+4938 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 20047+4938 KU 58 AB 1901 2018 15 186 2.9 10.23 10.41 0.18 <===
Show 20047+4938 ES 2688 BC 1909 2015 5 169 15.4 10.41 15.10 4.69
Triple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
186.3
Precise sep
2.868
Constellation
Cygnus
Tycho2
3567-00721-1
Gaia DR2
85228429952
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20047+4938 KU 58 AB 2002 11 187 2.8 10.23 10.41 A2 D 200440.13+493829.4
20047+4938 KU 58 AB 2003 12 187 2.8 10.23 10.41 A2 D 200440.14+493830.6
20047+4938 KU 58 AB 2011 13 190 2.7 10.23 10.41 A2 D 200440.14+493830.6
20047+4938 KU 58 AB 2015 14 186 2.8 10.23 10.41 A2 200440.14+493830.6

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