19544+3918 SEI 721AB

 
 
19h 54m 24.36s +39 17' 18.0" P.A. 199 sep 6.2 mag 11.10,12.20 Sp A0
 
 
Coord 2000
19544+3918
Discov num
SEI 721
Comp
AB
Coord arcsec 2000
19 54 24.36 +39 17 18.0
Date first
1896
Date last
2015
Obs
7
Pa first
225
Pa last
199
P.A. Now (θ)
199°
Sep first
14.4
Sep last
6.2
Sep. Now (ρ)
6.2"
Mag pri
11.10
Mag sec
12.20
delta mag (ΔM)
1.1
Spectral class
A0 (white)
Pri motion ra
+000
Sec motion ra
+061
Pri motion dec
-003
Sec motion dec
+032
Notes
rPM=1.021
This double is not physical.
 
 
19544+3918 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 19544+3918 SEI 721 AB 1896 2015 7 199 6.2 11.10 12.20 1.10 <===
Show 19544+3918 SEI 722 AC 1896 2002 6 65 21.3 11.10 12.50 1.40
Show 19544+3918 HJ 2909 AD 1895 2002 7 246 30.5 11.10 12.40 1.30
Quadruple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
199
Precise sep
6.2
Constellation
Cygnus
Tycho2
3137-00703-1
HD
226471
last precise pa
199
last precise sep
6.2
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
19544+3918 SEI 721 AB 1929 3 221 11.3 11.10 12.40 195424.36+391718.0
19544+3918 SEI 721 AB 2002 5 203 6.9 11.10 12.20 195424.36+391718.0
19544+3918 SEI 721 AB 2014 6 199 6.2 11.10 12.20 A0 195424.36+391718.0
19544+3918 SEI 721 AB 2015 7 199 6.2 11.10 12.20 A0 195424.36+391718.0

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