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At least 100 metres. The original accuracy goal was 0.5 mile, which
was later reduced to a more demanding 0.1 mile.

And I stand corrected on when the first TRANSIT (also known as the
Navy Navigation Satellite System) satellite was successfully launched.
The first prototype satellite to reach orbit was launched in April
1960. The first operational satellite was launched in December 1963.

-- Richard Langley


On 10-Apr-12, at 3:14 PM, Alexandre E Eremenko wrote:

>
> Richard,
> Thanks.
> Do you know how accurate it was?
>
>> The first TRANSIT satellite was launched in 1961. The system was
>> declared operational in 1964 and became classified. In 1967 it was
>> declassified and became available for civilian use.
>
> Alex.
>
>
>
>

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| Richard B. Langley                            E-mail:
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