First New Horizons JR1 Observations
New Horizons obtains its first distant spacecraft observations of Kuiper Belt object 1994 JR1.
Historical biography archive · Updated 2026-11-03
Simon Porter Biography and Timeline
Follow Simon Porter through 3 dated historical records for United States of America.
Simon Porter, historical timeline
A chronological timeline drawn from matching World History Database records.
3Distinct records
1 of 1Page
2015–2016Years on this page
2015
2016
Closest Images of 1994 JR1
New Horizons images 1994 JR1 from about 111 million kilometres away, then the closest spacecraft observations of a small Kuiper Belt object.
1994 JR1 Rotation Period
New Horizons observations determine that Kuiper Belt object 1994 JR1 rotates roughly once every five and a half hours.
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.