20180+3311 HO  592AB,C

 
 
20h 17m 59.91s +33 11' 29.1" P.A. 255 sep 3.1 mag 7.60,11.96 Sp B9 dist. 1351.35 pc (4408.1 l.y.)
 
 
Coord 2000
20180+3311
Discov num
HO  592
Comp
AB,C
Coord arcsec 2000
20 17 59.91 +33 11 29.1
Date first
1895
Date last
2018
Obs
14
Pa first
256
Pa last
255
P.A. Now (θ)
255°
Sep first
2.8
Sep last
3.1
Sep. Now (ρ)
3.1"
Mag pri
7.60
Mag sec
11.96
delta mag (ΔM)
4.36
Spectral class
B9 (blue-white)
Pri motion ra
+003
Sec motion ra
+004
Pri motion dec
-002
Sec motion dec
-002
Notes
N (See Notes)
rPM=0.224 (< 0.3, Physical double)
This double is physical.
 
 
20180+3311 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 20180+3311 BAR 11 AB 1898 2018 23 199 0.5 7.91 9.09 1.18
Show 20180+3311 HO 592 AB,C 1895 2018 14 255 3.1 7.60 11.96 4.36 <===
Triple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
254.6
Precise sep
3.05
Constellation
Cygnus
SAO
69778
HIP
100058
Tycho2
2676-00678-1
Gaia DR2
21483136640
HD
193238
BD
BD+32 3773
Distance
1351.35
Distance ly
4408.1
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20180+3311 HO 592 AB,C 1991 13 256 3.0 7.60 11.96 B9 N 201759.91+331129.1

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