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Search for planet XThe observation of the region of the sky in which it is believed Planet X should now be, based on perturbations observed in the motions of Uranus and Neptune, was determined, and there was no reason to update that determination. A limited area of that region was photographed, and that will be continued. A given area is photographed with the twin 20 cm astrograph in New Zealand on two successive nights near the time that area is in opposition, and these plates are blinked in Washington to identify anything that has moved. The predicted region is in the south, which requires observations from a southern station, and it is in opposition in the April to June period, which means observations have not yet started for the year. Blinking will be done as soon as the plates are received in Washington.
Document ID
19920003598
Document Type
Other
Authors
Harrington, Robert S. (Naval Observatory Washington, DC, United States)
Date Acquired
September 6, 2013
Publication Date
October 1, 1991
Publication Information
Publication: NASA, Washington, Reports of Planetary Astronomy, 1991
Subject Category
ASTRONOMY
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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