Neptune Ring Arc Detection
Sicardy helps identify occultation evidence for incomplete ring structures around Neptune.
Historical biography archive · Updated 2026-11-03
Bruno Sicardy Biography and Timeline
Follow Bruno Sicardy through 6 dated historical records for France.
Bruno Sicardy, historical timeline
A chronological timeline drawn from matching World History Database records.
6Distinct records
1 of 1Page
1984–2010Years on this page
1984
1985
Second Neptune Ring Arc Detection
Sicardy helps obtain further occultation evidence confirming that Neptune possesses persistent ring arcs.
1989
Neptune Ring Arc Confirmation
Voyager images confirm that the earlier ground-based occultation events were produced by real ring arcs.
1998
Neptune Ring Arcs Ground Imaging
Adaptive-optics observations obtain direct ground-based images of Neptune's ring arcs.
1999
Neptune Ring Arc Dynamics
Sicardy publishes ground-based adaptive-optics observations showing that Neptune's ring arcs remain dynamically complex.
2010
Eris Stellar Occultation
Sicardy and colleagues observe Eris occulting a star, enabling a precise measurement showing its size is comparable to Pluto's.
Records, sources and methodology
These dates and descriptions come from the historical_events database. Exact duplicate records have been collapsed. Names are grouped by the country, Name 2 and Name 1 fields; records with missing Name 2 cannot be reliably assigned to an individual biography. Check the underlying sources before formal citation.