About: http://webisa.webdatacommons.org/60982354

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	Actually, its trace is a circle, currently 0.75?? in radius around the north celestial pole (NCP), so the worst-case error would be that value when it is directly east or west of the celestial pole.
http://www.w3.org/ns/prov#wasQuotedFrom	rescuedynamics.ca