20307+3521 HJ 1526A,BC

 
 
20h 30m 40.68s +35 20' 53.2" P.A. 149 sep 8.8 mag 9.00,9.26 Sp A2
 
 
Coord 2000
20307+3521
Discov num
HJ 1526
Comp
A,BC
Coord arcsec 2000
20 30 40.68 +35 20 53.2
Date first
1828
Date last
2018
Obs
22
Pa first
154
Pa last
149
P.A. Now (θ)
149°
Sep first
8.0
Sep last
8.8
Sep. Now (ρ)
8.8"
Mag pri
9.00
Mag sec
9.26
delta mag (ΔM)
0.26
Spectral class
A2 (white)
Pri motion ra
+007
Sec motion ra
+009
Pri motion dec
+008
Sec motion dec
+010
Notes
N (See Notes)
rPM=0.21 (< 0.3, Physical double)
This double is physical.
 
 
20307+3521 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 20307+3521 HJ 1526 A,BC 1828 2018 22 149 8.8 9.00 9.26 0.26 <===
Show 20307+3521 HU 760 BC 1904 1992 8 84 0.2 9.80 10.40 0.60
Triple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
148.9
Precise sep
8.782
Constellation
Cygnus
Tycho2
2693-00788-1
Gaia DR2
73691978112
HD
195530
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20307+3521 HJ 1526 A,BC 2008 19 149 8.8 9.00 9.26 A2 D 203040.68+352053.2
20307+3521 HJ 1526 A,BC 2010 21 145 8.5 9.00 9.26 A2 203040.68+352053.2
20307+3521 HJ 1526 A,BC 2018 22 149 8.8 9.00 9.26 A2 N 203040.68+352053.2

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