17304+5218 BU 1090 AB (Bet Dra)

 
 
17h 30m 25.98s +52° 18' 04.9" P.A. 17.00 sep 4.6 mag 2.79,14.00 Sp G2Ib-IIa dist. 116.55 pc (380.19 l.y.)
 
 
Coord 2000 17304+5218 Discov num BU 1090 Comp AB Coord arcsec 2000 17 30 25.98 +52 18 04.9
Date first 1889 Date last 2016 Obs 7
Pa first 13 Pa last 16.9 P.A. Now (θ) 16.9°
Sep first 4.0 Sep last 4.577 Sep. Now (ρ) 4.577"
Mag pri 2.79 Mag sec 14.00 delta mag (ΔM) 11.21 Spectral class G2Ib-IIa (yellow)
Pri motion ra -016 Sec motion ra
Pri motion dec +015 Sec motion dec
Notes N (See Notes)
Nature of this double is uncertain.
 
 
17304+5218 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show Bet Dra 30429 17 30 26 +52 18 05 BU 1090 AB 2016 7 17 4.6 2.79 14.00 11.21 <===
Show 30429 17 30 26 +52 18 05 BU 1090 AC 2020 8 156 118.7 2.79 13.45 10.66
Show 17 30 31 +52 16 18 FYM 654 CD 2017 8 298 10.7 13.45 15.70 2.25
Quadruple system
4 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name Bet Dra Common name Rastaban Constellation Draco SAO 30429
HIP 85670 Tycho2 3521-01800-1 Gaia DR2 1415230383033121024 HD 159181
HR 6536 GC 23741 ADS 10611 BD BD+52 2065
Bayer Beta Draconis Bayer name Bet Dra Flamsteed 23 Draconis Flamsteed name 23 Dra
FK5 653 Distance 116.55 Distance ly 380.19 Bayer greek β Dra
Other names Rastaben, Alwaid, Asuia
Meaning snake's head