Photometry of Pluto during the 1982 opposition

Details Photometry of Pluto during the 1982 opposition Photometry of Pluto during the 1982 opposition

Feb 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983aj.....88..222b&link_type=abstract

Astronomical Journal, vol. 88, Feb. 1983, p. 222-225.

Astronomy and Astrophysics

Astronomy

17

Astronomical Photometry, Planet Ephemerides, Pluto (Planet), Brightness Distribution, Light Curve, Natural Satellites, Periodic Variations, Planetary Rotation, Time Dependence, Pluto, Photometry, Telescopic Observations, Brightness, Latitude, Data, Surface, Albedo, Distribution, Lightcurve, Rotation, Data Reduction, Satellites, 1978P1, Charon, Magnitude, Phases, Variations, Geometry, Comparisons, Analysis, Harmonics, Amplitude, Procedure

Scientific paper

Observations of Pluto's brightness were obtained by two-channel photometry on 18 nights during the 1982 opposition, using the 2.1-m and 91-cm reflectors at Mt. Locke. The resulting light curve suggests that the 'secular' decrease in intrinsic brightness is flattening, qualitatively consistent with a latitude dependence of the surface albedo distribution. Speculations are projected for the long-term behavior of the apparent light curve. Understanding of the current rotational brightness variation is important to the maximum utilization of photometric observations obtained during the imminent series of mutual eclipses between Pluto and its satellite.

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