Talk:(311999) 2007 NS2

Astronomy: Astronomical objects / Solar System Low‑importance

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Data-arc span

What is a "data-arc span"? Is this term correct? I see it used here and in other Wikipedia articles, and Google finds examples of it, but I can't find any source that explains what it means. Largoplazo (talk) 10:59, 23 October 2017 (UTC)[reply]