AB Doradus
Star system
AB Doradus is a pre-main-sequence quadruple star system in the constellation Dorado. The primary is a flare star that shows periodic increases in activity.
The primary star in this system spins at a rate 50 times that of the Sun, and consequently... Wikipedia
Apparent magnitude (V): 6.98−7.06 / 13.0
Absolute magnitude (MV): 5.86
B−V color index: +0.86±0.02
Distance: 49.5 ± 0.4 ly; (15.2 ± 0.1 pc)
Proper motion (μ): RA: 33.16 mas/yr; Dec.: 150.83 mas/yr
Radial velocity (Rv): 32.40 ± 2.2 km/s
Rotation: 0.5148 days