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Title: Charon/Pluto Mass Ratio Obtained with HST CCD Observations in 1991 and 1993
Authors: Null, George W.
Issue Date: 1995
Citation: Astronomical Journal
Abstract: We have analyzed Hubble Space Telescope wide field camera observations of Pluto, Charon, and a reference star, acquired in 1991 and 1993, to observe Pluto's barycentric motion and determine the Charon/Pluto mass ratio, q = 0.1237 ±0.0081, with 6.5% accuracy. Solution values for Charon orbital elements include the semimajor axis, a = 19662 ±81 km; inclination, i = 96.57 ±0.24 deg; eccentricity, e = 0.0072 ±0.0067; longitude of periapsis, w = 2 ±35 deg; and mean longitude, l = 123.58 ±0.43 deg. These elements are referred to the J2000 Earth equator and equinox at epoch JED 2446600.5.
Appears in Collections:JPL TRS 1992+

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