21129+3014 BUP 227 AB (Zet Cyg)

 
 
21h 12m 56.19s +30° 13' 36.9" P.A. 205.00 sep 65.2 mag 3.30,11.70 Sp G8III dist. 43.88 pc (143.14 l.y.)
 
 
Coord 2000 21129+3014 Discov num BUP 227 Comp AB Coord arcsec 2000 21 12 56.19 +30 13 36.9
Date first 1900 Date last 2015 Obs 8
Pa first 203 Pa last 205.3 P.A. Now (θ) 205.3°
Sep first 69.8 Sep last 65.246 Sep. Now (ρ) 65.246"
Mag pri 3.30 Mag sec 11.70 delta mag (ΔM) 8.4 Spectral class G8III (yellow)
Pri motion ra +007 Sec motion ra -007
Pri motion dec -068 Sec motion dec -014
Notes N (See Notes)
rPM=0.816
This double is not physical.
 
 
21129+3014 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 71070 21 12 56 +30 13 37 BAS 7 Aa,Ab 2000 1 246 0.0 3.20 13.20 10.00
Show Zet Cyg 71070 21 12 56 +30 13 37 BUP 227 AB 2015 8 205 65.2 3.30 11.70 8.40 <===
Show 71070 21 12 56 +30 13 37 BUP 227 AC 2015 7 300 91.5 3.30 12.73 9.43
Show 71070 21 12 56 +30 13 37 BUP 227 AD 2015 8 63 105.3 3.30 12.70 9.40
Show 71070 21 12 56 +30 13 37 FYM 141 AE 2015 3 76 42.8 3.30 14.10 10.80
Show 71070 21 12 56 +30 13 37 FYM 141 AF 2015 4 267 63.6 3.30 14.00 10.70
Show 71070 21 12 56 +30 13 37 FYM 141 AG 2015 4 97 70.7 3.30 15.10 11.80
Octuple system
7 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name Zet Cyg Constellation Cygnus SAO 71070 HIP 104732
Tycho2 2702-02764-1 Gaia DR2 1851924859347035520 HD 202109 HR 8115
GC 29661 BD BD+29 4348 Bayer Zeta Cygni Bayer name Zet Cyg
Flamsteed 64 Cygni Flamsteed name 64 Cyg FK5 797 Distance 43.88
Distance ly 143.14 Bayer greek ζ Cyg