[DOC] [TLE] Charon (moon) - Wikipedia [PAR] Charon, also called (134340) Pluto I, is the largest of the five known moons of the 
dwarf planet Pluto. It was discovered in 1978 at the United States Naval 
Observatory in ... On June 22, 1978, he had been examining highly magnified 
images of Pluto on ... On June 24, 1978, Christy first suggested the name Charon 
as a... [DOC] [TLE] James W. Christy - Wikipedia [PAR] On June 22, 1978 while working at the United States Naval Observatory, he 
discovered that Pluto had a moon, which he named Charon shortly afterwards. [DOC] [TLE] Charon: Pluto's Largest Moon - Universe Today [PAR] Jul 14, 2015 ... Charon is the largest moon of the dwarf planet Pluto. In fact, it's so large the two 
objects act like binary planets orbiting one another. ... Beginning in 1978, 
astronomers began to discover that Pluto  the most distant known ... Charon was 
discovered on June 22nd, 1978, by astronomer James Christy at the... [DOC] [TLE] Charon Discovery Image | Galleries - NASA Solar System Exploration [PAR] Dec 16, 2003 ... U.S. Naval Observatory astronomer James W. Christy noticed something unusual 
... dwarf planet Pluto to help compute a better ephemeris for this distant object. ... 
by a previously unknown moon orbiting Pluto at a distance of about 19,600 km ... 
On 7 July 1978, the discovery was formally announced to the... [DOC] [TLE] New Horizons Approaches during Anniversary of Charon's Discovery [PAR] Jun 24, 2015 ... Charon emerged from Pluto's shadow when U.S. Naval Observatory astronomer 
James W. Christy, working with colleague Robert Harrington, discovered it on 
June 22, 1978. ... Scientists sometimes refer to the objects as a double planet 
due to their sizes and close proximity. Christy noticed that Pluto... [DOC] [TLE] Charon | astronomy | Britannica.com [PAR] Jul 15, 2015 ... Largest moon of the dwarf planet Pluto. It was discovered telescopically on June 
22, 1978, by James W. Christy and Robert S. Harrington at the ... name, mean 
distance from centre of Pluto (orbital radius; km), orbital period [DOC] [TLE] Charon (Moon) Facts - Space Facts [PAR] It was discovered in 1978 by astronomer James Christy and is nearly 1/8 the 
mass of Pluto. It orbits a common centre of gravity with Pluto, and the two worlds 
are tidally locked together as they ... Orbit Distance: ... Discovery Date: June 22, 
1978 ... If it were not orbiting Pluto, Charon would be a dwarf planet in its own 
right. [DOC] [TLE] Charon (moon) - Science Daily [PAR] Charon was discovered by astronomer James Christy on June 22, 1978 when he 
... employed, either the largest moon of Pluto or one member of a double dwarf 
planet with ... with Earth and our single Moon: a giant impact in the distant ... read 
more ... Telescope discovered a fourth moon orbiting the icy dwarf planet Pluto. [DOC] [TLE] Charon (moon of Pluton)  Astronoo [PAR] Charon, discovered by James Christy in 1978, is the largest satellite of the dwarf 
planet ... around the planet with a period of 6.4 days, equal to the rotation period 
of Pluto, which is a synchronous orbit. ... Charon is a distant goal for space 
exploration but the New Horizons probe, we learn a ... Discovered date, June 22, 
1978. [DOC] [TLE] Charon, largest moon of Pluto - Windows to the Universe [PAR] Jan 23, 2006 ... Charon was discovered by the American astronomer James Christy on June 22, 
1978, while working at the U.S. ... The moon also orbits very close to the planet, 
just over 1/20th the distance between Earth and the Moon. Charon circles Pluto 
once every 6.4 days at a distance of 19,571 km (12,161 miles). [DOC] [TLE] EARTH-450 - Department of Earth and Planetary Sciences [PAR] 2.2.3 1978: Discovery of Pluto's Moon: Charon (Barbanito's Rage). 2.2.4 1988: ... 
moons along with Pluto make up a very complex system of masses which orbit 
and revolve .... Neptune that could justify the perturbations observed in Neptune's 
orbit. In

Question: On June 22, 1978 James W. Christy discovered Charon, a moon orbiting this distant planet
Answer: Pluto