It was named, assumed that it came from bat viromes -- viruses associated with bats.
And bat viromes have other coronaviruses under it's name. Including SARS. As stated from the previous post.
Why "corona" and "virus"??
Wikipedia wrote:
Coronaviruses are a group of related RNA viruses that cause diseases in mammals and birds.
Synonyms*: Coronavirinae
Coronaviruses constitute the subfamily Orthocoronavirinae, in the family Coronaviridae, order Nidovirales, and realm Riboviria.
Wikipedia wrote:
Coronaviridae
The viral genome is 26–32 kilobases in length. The particles are typically decorated with large (~20 nm), club- or petal-shaped surface projections (the "peplomers" or "spikes"), which in electron micrographs of spherical particles create an image reminiscent of the solar corona.
More Wikipedia because science naming is funny wrote:
Synonym* (taxonomy)
The Botanical and Zoological Codes of nomenclature treat the concept of synonymy differently.
In botanical nomenclature, a synonym is a scientific name that applies to a taxon that (now) goes by a different scientific name.
Unlike synonyms in other contexts, in taxonomy a synonym* is not interchangeable with the name of which it is a synonym. In taxonomy, synonyms are not equals, but have a different status.
For any taxon with a particular circumscription, position, and rank, only one scientific name is considered to be the correct one at any given time (this correct name is to be determined by applying the relevant code of nomenclature).
A synonym* cannot exist in isolation: it is always an alternative to a different scientific name.
Synonyms* also come about when the codes of nomenclature change, so that older names are no longer acceptable; for example, Erica herbacea L. has been rejected in favour of Erica carnea L. and is thus its synonym*.
Why English and not Chinese?
More Wikipedia wrote:
Nomenclature is a system of names or terms, or the rules for forming these terms in a particular field of arts or sciences.
The principles of naming vary from the relatively informal conventions of everyday speech to the internationally agreed principles, rules and recommendations that govern the formation and use of the specialist terms used in scientific and any other disciplines.
*Not your everyday synonym.

Long story short...
It's called coronavirus...
Because the virus is a round thing with spikes and when looked through an electron microscope, it looked like a thing with sun's corona.
The rest is funny stuff.