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Meadows, A. J.

Publications and source records attributed to Meadows, A. J..

4 records
All sourcesNASA NTRSDOE OSTI
NASA NTRS1984

The IRAS fast-moving object search

The IR Astronomy Satellite (IRAS) mission has yielded an all-sky IR survey with a detailed pointing history. An analysis is being conducted which will allow an estimate to be made of the detectable population of comets and Apollo asteroids. On the basis of results obtained to date, it is expected that IRAS will detect comets having visual magnitudes lower than 17 if their motions are greater than about 1 arcmin/hour. The positional accuracy of such detections depends on the number of bands in which an object was observed, although the accuracy has so far proved unsuitable for orbit determination. There is no evidence of an undiscovered main belt asteroid population at high ecliptic latitudes.

Davies, J. K.↗
NASA NTRS1983

Observations of asteroids in the 3- to 4-micron region

Spectra of eleven asteroids (1, 2, 8, 10, 15, 16, 22, 83, 386, 433, 471) have been obtained in the 3- to 4-micron region. Of these, only 1 Ceres and 2 Pallas have previously been observed in this wavelength region. Spectra of the S- and M-type asteroids are generally featureless, but 8 Flora may be an exception. None of the three new C-type spectra show significant absorption.

Eaton, N.↗
NASA NTRS1976

A comparison of the Great Red Spot with temporary spots on Jupiter

The International Planetary Patrol collection of Jupiter photographs is used to examine the development of a temporary spot that was visible in the northern equatorial zone for a total of 211 days. The motion and color of this spot are compared with those of the Great Red Spot. It is shown that the temporary spot was bluer than the Great Red Spot and has a longitudinal oscillation of approximately 4 deg with a period of about 45 days, implying that it may have possessed a significant dynamical property in common with other temporary spots and the Great Red Spot. It is concluded that the present spot is more likely to have been associated with a hole in the cloud deck rather than with an elevated surface feature.

Browne, G. C.↗