It's an exoplanet that's named Belerofonte as the heroe from the pegasus mith.
It was the first exoplanet to be discovered, it orbites arround 51 pegasi.
In 1995 was discovered by Michel Mayor and Didier Queloz.
That's the estar that it orbites arround:
And that's the sistem it belonges to:
I've calculated this exoplanet radius:
Acording to exoplanet.eu these are the dades for 51 pegasi b:
I've used the folowing formula:
And got this results:
