17053+5428 BU 1088 AC

17h 05m 20.20s +54° 28' 14.3" P.A. 174.00 sep 12.2 mag 5.66,13.70 Sp F7V dist. 27.43 pc (89.48 l.y.)

Coord 2000 17053+5428 Discov num BU 1088 Comp AC Coord arcsec 2000 17 05 20.20 +54 28 14.3
Date first 1925 Date last 2015 Obs 6
Pa first 179 Pa last 174.2 P.A. Now (θ) 174.2°
Sep first 13.8 Sep last 12.186 Sep. Now (ρ) 12.186"
Mag pri 5.66 Mag sec 13.70 delta mag (ΔM) 8.04 Spectral class F7V (yellow-white)
Pri motion ra -068 Sec motion ra -075
Pri motion dec +089 Sec motion dec +089
Notes N T (See Notes, Parallax indicates physical)




rPM=0.06 (< 0.3, Physical double)

This double is physical.



17053+5428 SYSTEM COMPONENTS

Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show Alrakis 30239 17 05 20 +54 28 14 STF 2130 AB 2020 831 358 2.5 5.66 5.69 0.03 Y
Show 30239 17 05 20 +54 28 14 BU 1088 AC 2015 6 174 12.2 5.66 13.70 8.04 <===
Show 30239 17 05 20 +54 28 14 BU 1088 BC 2020 14 179 11.0 5.69 13.70 8.01 Y


Triple system
3 estimated visually detectable stars in this system



OTHER CATALOGS AND DESIGNATIONS

Common name Alrakis Constellation Draco SAO 30239 HIP 83608
Tycho2 3890-01396-2 Gaia DR2 1420101696285626624 HD 154906 HR 6370
GC 23092 ADS 10345 GL Wo 9584B BD BD+54 1857
Bayer Mu Draconis Bayer name Mu Dra Flamsteed 21 Draconis Flamsteed name 21 Dra
Distance 27.43 Distance ly 89.48 Bayer greek μ Dra
Other names Arrakis, Errakis
Meaning dancer