Charon, formal designation (134340) Pluto I, is the largest of the five known natural satellites of the dwarf planet Pluto. It has a mean radius of 606 km (377 mi). Charon is a planetary-mass moon and the sixth-largest known trans-Neptunian object after Pluto, Eris, Haumea, Makemake, and Gonggong. It was discovered in 1978 at the United States Naval Observatory in Washington, D.C., using photographic plates taken at the United States Naval Observatory Flagstaff Station (NOFS).
Charon, the first of Pluto's satellites to be discovered, was first seen at the United States Naval Observatory by James W. Christy.
On June 22, in the year 1978, Charon, the first of Pluto's satellites to be discovered, was first seen at the United States Naval Observatory by James W. Christy. This event is recorded as a Historical Events event in the history of June 22, a notable event in this corner of history.
Key Facts
- This event took place on June 22, 1978 (AD era).
- It is categorised as a Historical Events event in recorded history.
- Referenced in 3 Wikipedia articles.
- Wikipedia source last updated on 6 May 2026.
On This Date in History
This article draws on content from Wikipedia, available under CC BY-SA 4.0.
More on June 22
The United States conducts airstrikes on three Iranian nuclear sites in Fordow, Natanz, and Isfahan
The United States of America (USA), also known as the United States (U.S.) or America, is a country primarily located in North America. It is a federal republic consisting of 50 s…
The United States conducts airstrikes on three Iranian nuclear sites in Fordow, Natanz, and Isfahan
An earthquake occurs in eastern Afghanistan resulting in over 1,000 deaths
A 4.0-kilometre (2.5 mi) deep earthquake measuring a magnitude (Mw) of 6.2 struck southeastern Afghanistan on 22 June 2022 at 01:24:36 AFT. The earthquake had a maximum Modified M…
An earthquake occurs in eastern Afghanistan resulting in over 1,000 deaths
The Afghan National Assembly building is attacked by gunmen after a suicide bombing
The National Assembly, also known as the Parliament of Afghanistan or simply as the Afghan Parliament, was the legislature of Afghanistan in various forms from the monarchy, repub…
The Afghan National Assembly building is attacked by gunmen after a suicide bombing
Paraguayan President Fernando Lugo is removed from office by impeachment and succeeded by Federico Franco
Paraguay, officially the Republic of Paraguay, is a landlocked country located in the central region of South America. It borders Bolivia to the northwest and north, Brazil to the…
Paraguayan President Fernando Lugo is removed from office by impeachment and succeeded by Federico Franco
A Turkish Air Force McDonnell Douglas F-4 Phantom II fighter plane is shot down by the Syrian Armed Forces, killing both
The Turkish Air Force (TuAF) is the air and space force of the Turkish Armed Forces. It traces its origins to 1 June 1911 when it was founded as the Aviation Squadrons by the Otto…
A Turkish Air Force McDonnell Douglas F-4 Phantom II fighter plane is shot down by the Syrian Armed Forces, killing both
A Washington D
The Washington Metro, often abbreviated as the Metro and formally the Metrorail, is a rapid transit system serving the Washington metropolitan area of the United States. It is adm…
A Washington D
Comments 0
Sign in to join the discussion.