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97:. This information was likely already known by Western intelligence agencies, although it was classified, meaning that the Kettering Group played an important role in making information about the Soviet space programme publicly available.
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to deduce the satellites' orbits. They were often able to deduce what various Soviet satellites were being used for, based on their
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60:, England who, together with his colleague Derek Slater, and students, deduced the existence of the previously-secret
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Perry and his students (who formed the
Kettering Group along with some other volunteers worldwide) continued their
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112:. After retiring from teaching in 1984 he worked as a space analyst for the
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television network. He was married to Jean, and had a daughter, Isabel.
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in 1973, in the New Year
Honours List. In 1974, he received the
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85:work for a number of years, using only inexpensive
151:but its sources remain unclear because it lacks
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259:Members of the Order of the British Empire
182:Learn how and when to remove this message
27:For other people with the same name, see
74:published his discovery shortly before
89:equipment and painstakingly using the
64:in 1966 by analyzing the orbit of the
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249:20th-century British astronomers
201:Satellite Tracking Group Members
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29:Jeffrey Perry (disambiguation)
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110:Royal Astronomical Society
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254:Schoolteachers from Essex
44:– 18 January 2000,
224:Satellite tracking group
137:This article includes a
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106:Jackson-Gwilt Medal
62:Plesetsk Cosmodrome
139:list of references
100:Perry received an
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35:Geoffrey E. Perry
16:(Redirected from
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40:(4 August 1927,
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164:introducing
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66:Kosmos 112
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95:telemetry
78:in 1966.
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48:) was a
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