Talk:(612533) 2002 XV₉₃

Astronomy: Astronomical objects / Solar System Low‑importance

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Mass and density?

Where did these estimates (guesses?) come from? There's no citation, and the rest of the object's characteristics don't seem well known enough to pin them down; though the albedo suggests relatively little ice, the measured density of some other small dark bodies with satellites counter the high density of the rocks making it up and suggest in turn that there's a high degree of macroporosity, greatly reducing the overall density and thus mass...

(Though unexpectedly, for once, there's not really anything to alter in the article as it stands besides this; the albedo and size has been estimated with reasonable precision by Herschel / the TNOs Are Cool mega-study, and even Brown's personal blog list is largely in agreement with it, just rounding off the magnitude and albedo somewhat so giving a slightly larger diameter estimate - but one still within the Herschel error bars. Quite refreshing, after getting used to having to update/correct/expand the data on a lot of other objects in this size range.) — Preceding unsigned comment added by 146.199.60.87 (talk) 01:14, 19 August 2019 (UTC)[reply]