Talk:August 2016 lunar eclipse

This article was nominated for deletion on 10 January 2019. The result of the discussion was keep.

A fact from August 2016 lunar eclipse appeared on Wikipedia's Main Page in the Did you know column on 9 February 2019 (check views). The text of the entry was as follows:

Did you know... that the penumbral lunar eclipse originally predicted to occur on 18 August 2016 did not happen?

A record of the entry may be seen at Wikipedia:Recent additions/2019/February. The nomination discussion and review may be seen at Template:Did you know nominations/August 2016 lunar eclipse.

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Eclipse dropped[edit]

NASA's eclipse webpage (http://eclipse.gsfc.nasa.gov/LEsaros/LEsaros109.html) seems to have dropped this eclipse in its latest revision on May 3, 2009. Does anyone know what has happened? Davidpage (talk) 10:10, 16 June 2009 (UTC)[reply]

Yes, it is also removed here [1]. I have printed versions of the original GIF diagram, showing a "grazing penumbral" event. Apparently the updated calculations excluded the event, either due to orbital motion, or definition of the shadow diameter (which is subjective/fuzzy due to the earth's atmosphere.) If I find any statement for the exclusion, I'll link it. There ought to be a summary statement of changes since similar transitional shifts may exist, between total/partial as well.

I'll move the NASA link here for now, since it fails:

2016 Aug 18 chart: Eclipse Predictions by Fred Espenak, NASA/GSFC

SockPuppetForTomruen (talk) 23:33, 18 June 2009 (UTC)[reply]

Non-eclipse[edit]

As you can see it is barely an eclipse, it may as well not be an eclipse. I propose to delete the article. 70.82.127.4 (talk) 19:23, 18 August 2016 (UTC)[reply]

The article should be deleted. Fred Espenak wrote in an email to David Cochrane in August 2016: "It all depends on exactly how you define the geometry gof the Earth’s shadow. I talk about it here: http://eclipsewise.com/lunar/LEhelp/LEenlargement.html According to the shadow geometry used by Meeus and myself, there will be NO eclipse on 2016 Aug. 18, It’s a very near miss but no eclipse. Best, Fred". Aloist (talk) 14:36, 16 September 2016 (UTC)[reply]

It was technically an eclipse, because Earth's shadow grazed the Moon, so it should stay. The wording is clear that it was a graze.

Before rushing to delete the page for no other reason than it not being a particularly interesting eclipse, someone (who?) will need to establish a new definition of Lunar Eclipse. At what point does an eclipse become a Wikipedia Acceptable Eclipse? Far better to accept the long-established astronomical definition, leave the article alone and move on. Ggreybeard (talk) 00:52, 17 September 2016 (UTC)[reply]

It seems reasonable and helpful at least to include a statement from Espenak or Meeus that it was a near-miss, if such a statement has public sourcing. Tom Ruen (talk) 05:55, 17 September 2016 (UTC)[reply]

A Commons file used on this page or its Wikidata item has been nominated for deletion[edit]

The following Wikimedia Commons file used on this page or its Wikidata item has been nominated for deletion:

Lunar eclipse January 31 2018 California Alfredo Garcia Jr mideclipse.jpg

Participate in the deletion discussion at the nomination page. —Community Tech bot (talk) 03:52, 26 January 2020 (UTC)[reply]