65_HS1-834228961_62-HQ-83894_Section_006

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Sigr.ting No. 175
Photograph of Unknown Aerial Phenomena taken at Datil,
New Mexico by Cpl Lert i s E. Stanfield, Holloman Air Force
Base, New Mexico on 24 and 25 Feb 1950.
An analysis of
the above photograph was made by Dr . Lincoln laPaz, Head
of the Institut e of Meteoritics, Univers ity of New Mexico,
Albuquerque, New Mexico, who reached the following con­
clusions :
a. The angular diameter of the perfectly round
luminous object Stanfield observed was
imately 1/4 of a degree.
approx­
b. The angular velocity of the object in the sky
was greater than half _a degree per minute.
Dr. LaPaz stated that on the bas is of t he results (a)
and (b) above, the object seen by Stanfield was not t he
moon (for the angular. diameter is too small), it was not
Venus or any other planet (for the angular diameter ~as
too large), and it was not a bright fixed star slightly­
out of focus (for the observed rate of motion is double
that due to the diurnal rotation of the earth).