17566+5129 BU  633AB (Eltanin)

 
 
17h 56m 36.38s +51 29' 20.2" P.A. 152 sep 21 mag 2.23,13.40 Sp K5III dist. 47.3 pc (154.29 l.y.)
 
 
Coord 2000
17566+5129
Discov num
BU  633
Comp
AB
Coord arcsec 2000
17 56 36.38 +51 29 20.2
Date first
1878
Date last
2012
Obs
10
Pa first
152
Pa last
152
P.A. Now (θ)
152°
Sep first
20.6
Sep last
21.0
Sep. Now (ρ)
21"
Mag pri
2.23
Mag sec
13.40
delta mag (ΔM)
11.17
Spectral class
K5III (yellow-orange)
Pri motion ra
-008
Sec motion ra
Pri motion dec
-019
Sec motion dec
Notes
N (See Notes)
Nature of this double is uncertain.
 
 
17566+5129 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show Eltanin 30653 17566+5129 BU 633 AB 1878 2012 10 152 21.0 2.23 13.40 11.17 <===
Show 30653 17566+5129 BU 633 AC 1878 2012 5 234 41.2 2.23 12.90 10.67
Show 30653 17566+5129 BU 633 AD 1878 2012 7 11 57.9 2.23 12.90 10.67
Show 30653 17566+5129 BU 633 AE 1898 2012 7 234 94.9 2.23 11.90 9.67
Show 30653 17566+5129 BU 633 AF 1879 2012 10 114 124.8 2.38 11.67 9.29
Show 30653 17566+5129 BU 633 AG 1898 2012 7 27 141.8 2.38 11.23 8.85
Septuple system
7 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
152
Precise sep
20.95
Common name
Eltanin
Meaning
sea monster
Other names
ETAMIN, RASTABAN, ZENITH STAR
Constellation
Draco
SAO
30653
HIP
87833
HD
164058
HR
6705
GC
24432
BD
BD+51 2282
Bayer
Gamma Draconis
Bayer name
Gam Dra
Flamsteed
33 Draconis
Flamsteed name
33 Dra
Distance
47.3
Distance ly
154.29
last precise pa
152
last precise sep
20.95
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
17566+5129 BU 633 AB 2007 9 152 20.8 2.23 13.40 K5III N 175636.38+512920.2
17566+5129 BU 633 AB 2012 10 152 21.0 2.23 13.40 K5III N 175636.38+512920.2

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