Pluto22 June 1978
James Christy identifies evidence of Pluto's first known moon, later named Charon, in photographic observations.
World History Database · Biography facts · Archive · United States of America · Christy · James Christy
Historical person
James Christy Biography
Historical biography and chronological timeline for James Christy, based on 4 World History Database records associated with United States of America.
4 records1978–19852 events1 places
Chronological biography
1978
Charon2 July 1978
New photographs from the U.S. Naval Observatory confirm that the recurring elongation beside Pluto is caused by an orbiting satellite.
Charon7 July 1978
The discovery of Pluto's moon is formally announced to astronomers through IAU Circular 3241.
1985
Charon22 February 1985
An IAU circular reports confirming mutual-event observations, after which Pluto's large satellite is officially named Charon.
Record provenance
This biography is assembled from World History Database records filtered by country and personal-name fields. Exact duplicate display records are removed. The database is an index rather than a complete narrative biography; formal research should verify entries against relevant primary or specialist sources.