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
N (See 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
Cdsa2 id
SEI 721 AB
Constellation
Cygnus
Ra deg
19.906766666666666
De deg
39.288333333333334
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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