Final answer:
The 259th decimal place digit of Pi is not given and cannot be determined from the provided information. Significant figures are a separate concept related to measurement precision.
Step-by-step explanation:
The digit found at the 259th decimal place of Pi is not specified within the scope of information provided. The question seems to mix concepts related to significant figures, which apply to precision in measurements, with the calculation of a specific digit of Pi.
To find the 259th decimal place, you would need to consult a source that lists the digits of Pi to that degree of precision, such as a mathematical software program or a Pi digit lookup tool.