About: http://webisa.webdatacommons.org/55954765

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	But bear in mind that a comet???s magnitude is the estimate of the light emitted by the whole (extended) object, while a star is a point of light.
http://www.w3.org/ns/prov#wasQuotedFrom	mydarksky.org