20134+3844 BLL  47AB (RS Cyg)

 
 
20h 13m 23.66s +38 43' 44.5" P.A. 354 sep 131.7 mag 8.00,7.15 Sp CII dist. 473.93 pc (1545.96 l.y.)
 
 
Coord 2000
20134+3844
Discov num
BLL  47
Comp
AB
Coord arcsec 2000
20 13 23.66 +38 43 44.5
Date first
1879
Date last
2015
Obs
24
Pa first
355
Pa last
354
P.A. Now (θ)
354°
Sep first
132.4
Sep last
131.7
Sep. Now (ρ)
131.7"
Mag pri
8.00
Mag sec
7.15
delta mag (ΔM)
0.85
Spectral class
CII (red carbon star)
Pri motion ra
+009
Sec motion ra
-003
Pri motion dec
+002
Sec motion dec
-005
Notes
N (See Notes)
rPM=1.507
This double is not physical.
 
 
20134+3844 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show RS Cyg 20134+3844 BLL 47 AB 1879 2015 24 354 131.7 8.00 7.15 0.85 <===
Show 20134+3844 BLL 47 AC 1878 2015 21 106 154.0 8.00 9.50 1.50
Triple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
353.9
Precise sep
131.689
Var name
RS Cyg
Constellation
Cygnus
SAO
69636
HIP
99653
Tycho2
3151-01358-1
Gaia DR2
67887555840
HD
192422
BD
BD+38 3957
Distance
473.93
Distance ly
1545.96
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20134+3844 BLL 47 AB 2002 21 354 129.9 8.00 7.15 CII N D 201323.66+384344.5
20134+3844 BLL 47 AB 2012 25 354 131.3 8.00 7.15 CII N D 201323.66+384344.5
20134+3844 BLL 47 AB 2015 24 354 131.7 8.00 7.15 CII N 201323.66+384344.5

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