Declassified UFO / UAP Document
Correspondence regarding astronomical calculations of Jupiter
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AI-Generated Summary
This correspondence confirms that an unidentified object observed at Presque Isle was identified as the planet Jupiter through astronomical calculations provided by Professor J. Allen Hynek.
This document consists of two letters exchanged between Dr. H. Marshall Chadwell and Professor J. Allen Hynek in December 1952. The correspondence concerns the identification of an aerial object observed at Presque Isle. In his letter dated December 23, 1952, Professor Hynek provides astronomical calculations to Dr. Chadwell, explaining that the object's observed azimuth of 163 degrees and elevation of 58.5 degrees, when compared with the calculated rate of motion, match the position of the planet Jupiter. Hynek further notes that discrepancies in theodolite observations are common due to potential errors in zero point settings or incorrect scale readings by observers. In his response dated December 29, 1952, Dr. Chadwell acknowledges receipt of these calculations, expresses agreement with Hynek's findings, and thanks him for his assistance as a consultant.
In view of this strikingly close agreement in rates as well as general position in the sky, it would be an outrage to probability theory to consider that the object observed was anything other than the time-honored planet Jupiter. The prosecution rests its case!
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Official Assessment
The object observed was the planet Jupiter.
Calculations of the object's azimuth (163 degrees) and elevation (58.5 degrees) at Presque Isle, combined with the rate of motion, confirm the object was Jupiter.
Key Persons
- J. Allen HynekProfessor, Graduate School, The Ohio State University
- H. M. ChadwellRecipient of correspondence