Talk:2020 VV

Astronomy: Astronomical objects / Solar System Low‑importance

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Impact risk corridor[edit]

Once there is a reliable source for the impact risk corridor, this map I made may be added to the article.

Renerpho (talk) 20:42, 16 November 2020 (UTC)[reply]

Uncertainty[edit]

the JPL SBDB has an Uncertainty on the order of a few million km. -- Kheider (talk) 22:23, 16 November 2020 (UTC)[reply]

The stretch of the LOV is given as "semi-major axis" in the JPL close approach table. It has the same meaning as what the other sources call "stretch". It gives the 1-sigma width of the LOV, i.e. the uncertainty in position. Note that the JPL's min/max miss distance is calculated out to 4 or 5 sigma, hence why those values are larger.Renerpho (talk) 22:54, 16 November 2020 (UTC)[reply]

I have linked expected value and standard deviation from the table, to resolve the potential confusion that might arise about the meaning of "nominal distance" and "position uncertainty".Renerpho (talk) 00:24, 17 November 2020 (UTC)[reply]