20307+3521 HU  760BC

 
 
20h 30m 41.05s +35 20' 45.8" P.A. 84.00 sep 0.2 mag 9.80,10.40
 
 
Coord 2000
20307+3521
Discov num
HU  760
Comp
BC
Coord arcsec 2000
20 30 41.05 +35 20 45.8
Date first
1904
Date last
1992
Obs
8
Pa first
112
Pa last
84
P.A. Now (θ)
84°
Sep first
0.3
Sep last
0.2
Sep. Now (ρ)
0.2"
Mag pri
9.80
Mag sec
10.40
delta mag (ΔM)
0.6
Spectral class
Pri motion ra
+007
Sec motion ra
+007
Pri motion dec
+009
Sec motion dec
+009
Notes
N (See Notes)
Visually invisible, K-band or other infrared star Nature of this double is uncertain.
 
 
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 26 149 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
83.6
Precise sep
0.23
Constellation
Cygnus
Tycho2
2693-00788-2
Gaia DR2
69389498752
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20307+3521 HU 760 BC 1992 8 84 0.2 9.80 10.40 203041.05+352045.8

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