17566+5129 BU 633 AF

 
 
17h 56m 36.38s +51° 29' 20.2" P.A. 114.00 sep 126.0 mag 2.38,11.67 Sp K5III dist. 47.3 pc (154.29 l.y.)
 
 
Coord 2000 17566+5129 Discov num BU  633 Comp AF Coord arcsec 2000 17 56 36.38 +51 29 20.2
Date first 1879 Date last 2018 Obs 12
Pa first 116 Pa last 114.4 P.A. Now (θ) 114.4°
Sep first 124.8 Sep last 125.99 Sep. Now (ρ) 125.99"
Mag pri 2.38 Mag sec 11.67 delta mag (ΔM) 9.29 Spectral class K5III (yellow-orange)
Pri motion ra -009 Sec motion ra +001
Pri motion dec -023 Sec motion dec -008
Notes N (See Notes)
rPM=0.73
Nature of this double is uncertain.
 
 
17566+5129 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 30653 17 56 36 +51 29 20 BU 633 AB 2018 12 152 21.1 2.23 13.40 11.17
Show 30653 17 56 36 +51 29 20 BU 633 AC 2012 5 234 41.2 2.23 12.90 10.67
Show 30653 17 56 36 +51 29 20 BU 633 AD 2017 8 11 59.5 2.23 12.90 10.67
Show Eltanin 30653 17 56 36 +51 29 20 BU 633 AE 2018 9 235 96.0 2.23 11.90 9.67
Show 30653 17 56 36 +51 29 20 BU 633 AF 2018 12 114 126.0 2.38 11.67 9.29 <===
Show 30653 17 56 36 +51 29 20 BU 633 AG 2018 9 28 143.6 2.38 11.23 8.85
Septuple system
7 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Common name Eltanin Constellation Draco SAO 30653 HIP 87833
Tycho2 3523-01684-1 HD 164058 HR 6705 GC 24432
ADS 10923 BD BD+51 2282 Bayer Gamma Draconis Bayer name Gam Dra
Flamsteed 33 Draconis Flamsteed name 33 Dra FK5 676 Distance 47.3
Distance ly 154.29 Bayer greek γ Dra
Other names ETAMIN, RASTABAN, ZENITH STAR
Meaning sea monster