20367+5053 HEI 879Aa,Ab

 
 
20h 36m 42.99s +50 53' 23.4" P.A. 137 sep 0.1 mag 8.40,9.20 Sp A2V dist. 216.45 pc (706.06 l.y.)
 
 
Coord 2000
20367+5053
Discov num
HEI 879
Comp
Aa,Ab
Coord arcsec 2000
20 36 42.99 +50 53 23.4
Date first
1991
Date last
2008
Obs
5
Pa first
150
Pa last
137
P.A. Now (θ)
137°
Sep first
0.2
Sep last
0.1
Sep. Now (ρ)
0.1"
Mag pri
8.40
Mag sec
9.20
delta mag (ΔM)
0.8
Spectral class
A2V (white)
Pri motion ra
-004
Sec motion ra
Pri motion dec
+008
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
20367+5053 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 20367+5053 HEI 879 Aa,Ab 1991 2008 5 137 0.1 8.40 9.20 0.80 <===
Show 20367+5053 HLD 39 AB 1881 2017 14 174 7.5 8.00 11.20 3.20
Triple system
2 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
136.7
Precise sep
0.134
Constellation
Cygnus
SAO
32731
HIP
101691
Tycho2
3585-02079-1
Gaia DR2
39457244672
HD
196670
BD
BD+50 3145
Distance
216.45
Distance ly
706.06
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20367+5053 HEI 879 Aa,Ab 1996 3 148 0.2 8.40 9.20 A2V 203642.99+505323.4
20367+5053 HEI 879 Aa,Ab 2008 5 137 0.1 8.40 9.20 A2V 203642.99+505323.4

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