19544+3918 HJ 2909AD

 
 
19h 54m 24.36s +39 17' 18.0" P.A. 246 sep 30.5 mag 11.10,12.40 Sp A0
 
 
Coord 2000
19544+3918
Discov num
HJ 2909
Comp
AD
Coord arcsec 2000
19 54 24.36 +39 17 18.0
Date first
1895
Date last
2002
Obs
7
Pa first
247
Pa last
246
P.A. Now (θ)
246°
Sep first
29.6
Sep last
30.5
Sep. Now (ρ)
30.5"
Mag pri
11.10
Mag sec
12.40
delta mag (ΔM)
1.3
Spectral class
A0 (white)
Pri motion ra
+000
Sec motion ra
-007
Pri motion dec
-003
Sec motion dec
-003
Notes
rPM=0.919
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
246.1
Precise sep
30.472
Constellation
Cygnus
Tycho2
3137-00703-1
HD
226471
last precise pa
246.1
last precise sep
30.472
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
19544+3918 HJ 2909 AD 1998 6 246 30.5 11.10 12.10 D 195424.36+391718.0
19544+3918 HJ 2909 AD 2002 7 246 30.5 11.10 12.10 D 195424.36+391718.0

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