Heng-O Corona [SEP] located on astronomical body
Heng-O Corona
Heng-O Corona is a corona in Guinevere Planitia on the planet Venus at Latitude 2° North, Longitude 355° East. It has a diameter of , and is the 2nd largest corona on Venus.
It is named for Heng O (also known as Chang'e), the Chinese goddess of the Moon.
studied Mars extensively.
His most famous astronomical discovery was that the ice caps on Mars are not exactly on the rotational poles of that body. He also recognized (in May 1724) that the corona visible during a solar eclipse belongs to the Sun not to the Moon, and he discovered R Hydrae as a variable star. He also helped with the survey based on the Paris Meridian.
He is also credited for the first observation (1723) of what is usually referred to as Poisson's spot, an observation