The year 1990 marks end of Pluto-Charon mutual event season

Details The year 1990 marks end of Pluto-Charon mutual event season The year 1990 marks end of Pluto-Charon mutual event season

Oct 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991plas.rept..181t&link_type=abstract

In NASA, Washington, Reports of Planetary Astronomy, 1990 p 181-182 (SEE N92-12792 03-89)

Astronomy and Astrophysics

Astronomy

Charon, Orbits, Radii, Eclipses, Occultation, Pluto (Planet)

Scientific paper

From late 1984 until late 1990, the orbit of Pluto's satellite Charon was sufficiently close to an edge-on configuration, as seen from Earth, to produce transit, occultation, and eclipse events involving the two objects. The systematic observation of these events, each of which offers a unique geometry of Pluto, Charon and shadow, has been used to directly measure several parameters of the system. With data now available from the entire mutual event season, reliable values for the radii of Pluto and Charon can be derived. Pluto's radius is 0.05860 plus or minus 0.00031, in units of Chiron's mean orbital radius, and Charon's radius is 0.03019 plus or minus 0.00066, in the same units.

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