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) |
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 |
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 |