In Star Trek, Denobula is a planet and the homeworld of the Denobulan species. In the Star Trek series "Enterprise", Doctor Phlox was the Denobulan chief medical officer of the Enterprise NX-01 during its historic voyage.

There is no Denobula in real astronomy, but there is a star called Denebola. Also vcalled Beta Leonis, it is the second brightest star in the constellation Leo. It is an A-class star that is about 36 light-years distant from Earth, and has a luminosity about twelve times that of the sun. Denebola is a Delta Scuti type variable star, meaning its luminosity varies very slightly over a period of a few hours.  

It is a relatively young star with an age estimated at less than 400 million years. Interferometric observations of this star give a radius that is about 173% that of the Sun. However, the high rate of rotation of this star results in an oblate shape with an equatorial bulge. It has 75% more mass than the Sun, which results in a much higher overall luminosity. Denebola shows a strong infrared excess, which means there must be a debris disk of cool dust in orbit around it. As our solar system is believed to have formed out of such a disk, Denebola may indeed be a good candidate location for extrasolar planets.
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Denebola



Dr. Phlox