MOST satellite photometry of Regulus
  No eclipse has been found in 15 days of almost continuous photometry of Alpha Leo with accuracy of about 0.0005 mag. 
Slavek Rucinski, Michael Gruberbauer, David B. Guenther, Rainer   Kuschnig, Jaymie M. Matthews, Anthony F. J. Moffat, Jason ...
astro-ph.SR