{{Short description|Full or new moon which appears larger}} {{redirect|Super Moon|the album by Dirty Heads|Super Moon (album)}} {{Use mdy dates|date=September 2022}}
thumb|alt=refer to caption|A juxtaposition of the apparent diameters of a more-average full moon on December 20, 2010 (left), and of the supermoon of March 19, 2011 (right) as viewed from Earth
A '''supermoon''' is a full moon or a new moon that nearly coincides with perigee—the closest that the Moon comes to the Earth in its orbit—resulting in a slightly larger-than-usual apparent size of the lunar{{nbsp}}disk as viewed from Earth.{{zwj}}<ref name="NYT-20140907">{{cite news |author=Staff |title=Revisiting the Moon |url=https://www.nytimes.com/2014/09/09/science/revisiting-the-moon.html |date=September 7, 2014 |work=New York Times |access-date=September 8, 2014}}</ref> The technical name is a '''perigee syzygy''' (of the Earth–Moon–Sun system) or a '''full''' (or{{nbsp}}'''new''') '''Moon around perigee'''.{{zwj}}{{efn|See perigee and syzygy}} Because the term ''supermoon'' is astrological in origin, it has no precise astronomical definition.{{zwj}}<ref name="Discover">{{cite web |url=http://blogs.discovermagazine.com/badastronomy/2011/03/18/kryptonite-for-the-supermoon/ |title=Kryptonite for the supermoon |work=Bad Astronomy |publisher=Discover |first=Phil |last=Plait |author-link=Phil Plait |access-date=August 29, 2015 |archive-date=October 22, 2019 |archive-url=https://web.archive.org/web/20191022223111/http://blogs.discovermagazine.com/badastronomy/2011/03/18/kryptonite-for-the-supermoon/ }}</ref>{{contradiction inline|date=August 2024}}
The association of the Moon with both oceanic and crustal tides has led to claims that the supermoon phenomenon may be associated with increased risk of events like earthquakes and volcanic eruptions, but no such link has been found.{{zwj}}<ref>{{cite news |url=http://news.discovery.com/earth/super-moon-earthquake-no-link-110318.html |title=No Link Between 'Super Moon' and Earthquakes |website=Discovery News |first=Rachel |last=Rice |access-date=March 20, 2015 |archive-date=June 13, 2011 |archive-url=https://web.archive.org/web/20110613074015/http://news.discovery.com/earth/super-moon-earthquake-no-link-110318.html }}</ref>
The opposite phenomenon, an '''apogee syzygy''' or a '''full''' (or{{nbsp}}'''new''') '''Moon around apogee''', has been called a '''micromoon'''.{{zwj}}<ref>{{cite web |url=https://www.timeanddate.com/astronomy/moon/micro-moon.html |title=What Is a Micromoon? |website=TimeAndDate.com |publication-place=Stavanger, Norway |access-date=August 6, 2018}}</ref>
==Definitions== The name ''supermoon'' was coined by astrologer Richard Nolle in{{nbsp}}1979, in ''Dell{{nbsp}}Horoscope'' magazine arbitrarily defined as: {{blockquote|... a new or full moon which occurs with the Moon at or near (within 90%{{nbsp}}of) its closest approach to Earth in a given orbit (perigee). In short, Earth, Moon and Sun are all in a line, with Moon in its nearest approach to Earth.|sign=Richard Nolle{{zwj}}<ref name="HolleSupermoon">{{cite web |last=Nolle |first=Richard |title=Supermoon |url=https://www.astropro.com/features/articles/supermoon/ |work=Astropro |access-date=14 March 2011 |date= March 10, 2011}}</ref>}}
thumb|alt=refer to text|NASA image showing comparison of a supermoon (left) and a micromoon (right) He came up with the name while reading ''Strategic Role Of Perigean Spring Tides in Nautical History and Coastal Flooding'', published in{{nbsp}}1976 by Fergus{{nbsp}}Wood, a hydrologist with{{nbsp}}NOAA.{{zwj}}<ref>{{Cite news|url=http://www.actforlibraries.org/what-is-a-super-moon/|title=What is a Super Moon|work=Act For Libraries|access-date=2018-01-10|language=en-US|archive-url=https://web.archive.org/web/20180111164919/www.actforlibraries.org/what-is-a-super-moon/|archive-date=January 11, 2018|url-status=usurped}}</ref>{{zwj}}<ref name="Wood">{{Cite book|url=https://archive.org/details/strategicroleofp00wood|title=The Strategic Role of Perigean Spring Tides in Nautical History and Coastal Flooding, 1635-1976|last=Fergus|first=Wood|publisher=US National Oceanic and Atmospheric Administration|year=1976|isbn=|publication-place=Washington DC|pages=}}</ref> Nolle explained in{{nbsp}}2011 that he based calculations on 90% of the difference in lunar apsis extremes for the solar{{nbsp}}year. In other words, a full or new{{nbsp}}moon is considered a supermoon if <math> ld_s \leq ld_p + 0.1 * (ld_a - ld_p)</math>, where <math>ld_s</math> is the lunar distance at syzygy, <math>ld_a</math> is the lunar distance at the greatest apogee of the year, and <math>ld_p</math> is the lunar distance at the smallest perigee of the year.{{zwj}}<ref>{{Cite web|url=https://earthsky.org/astronomy-essentials/why-experts-disagree-on-what-makes-a-supermoon#nolle|title=November 2017 full moon a supermoon?|website=EarthSky|language=en-US|access-date=2018-01-08}}</ref>{{zwj}}<ref>{{Cite web|url=https://www.astropro.com/features/articles/supermoon/|title=SuperMoon: What It Is, What It Means|last=Nolle|first=Richard|website=Astropro|access-date=2018-01-08}}</ref>
In practice, there is no official or even consistent definition of how near perigee the full{{nbsp}}Moon must occur to receive the supermoon label, and new{{nbsp}}moons rarely receive a supermoon label. Different sources give different definitions.{{zwj}}<ref>{{Cite web|url=https://earthsky.org/astronomy-essentials/why-experts-disagree-on-what-makes-a-supermoon#nolle|title=November 2017 full moon a supermoon?|website=EarthSky.org|language=en-US|access-date=2018-01-08}}</ref>{{zwj}}<ref>{{Cite web|url=https://www.astropro.com/features/tables/cen21ce/suprmoon.html|title=Astrologer Richard Nolle's Century 21 CE SuperMoon Table|last=Nolle|first=Richard|website=Astropro|access-date=2018-01-08}}</ref>
The term ''perigee-syzygy'' or ''perigee full{{wbr}}/{{wbr}}new{{nbsp}}moon'' is preferred in the scientific community.{{zwj}}<ref name="NASA">{{cite news |url=https://science.nasa.gov/science-news/science-at-nasa/2012/02may_supermoon/ |title=Perigee "Super Moon" On May 5–6 |last=Phillips |first=Tony |date=May 2, 2012 |work=NASA Science News |access-date=May 6, 2012}}</ref> Perigee is the point at which the Moon is closest in its orbit to the Earth, and syzygy is when the Earth, the Moon and the Sun are aligned, which happens at every full or new{{nbsp}}moon. {{shy|Astro|physicist}} Fred{{nbsp}}Espenak uses Nolle's definition but preferring the label of ''full{{nbsp}}Moon at perigee'', and using the apogee and perigee nearest in time rather than the greatest and least of the year.{{zwj}}<ref name="ephemeris">{{cite web|last=Espenak|first=Fred|title=Full Moon at Perigee (Super Moon): 2001 to 2100|url-status=live|archive-url=https://web.archive.org/web/20200210114646/http://astropixels.com/ephemeris/moon/fullperigee2001.html|archive-date=Feb 10, 2020|url=https://astropixels.com/ephemeris/moon/fullperigee2001.html|access-date=2020-03-12|website=Astropixels}}</ref> Wood{{nbsp}}used the definition of a full or new moon occurring within 24{{nbsp}}hours of perigee and also used the label ''perigee-syzygy''.{{zwj}}<ref name="Wood" />
Wood also coined the less-used term ''proxigee'' where perigee and the full or new{{nbsp}}moon are separated by 10{{nbsp}}hours or less.{{zwj}}<ref name="Wood" /> Nolle has also added the concept of ''extreme supermoon'' in{{nbsp}}2000 describing the concept as any new or full{{nbsp}}moons that are at "100% or greater of the mean{{nbsp}}perigee".{{zwj}}<ref name="Nolle2000">{{Cite web | url=https://www.astropro.com/features/tables/cen21ce/suprmoon.html | title=Astrologer Richard Nolle's Century 21 CE SuperMoon Table | website=Astropro | year=2000 | access-date=2020-03-08}}</ref>
==Occurrence== Of the possible 12 or 13 full (or{{nbsp}}new) moons each year, usually three or four may be classified as supermoons, as commonly defined.
The full moon occurred Thursday December 4, 2025 at 3:14 PST, following an occurrence on November 5, 2025. Due to the event occurring in December it is usually called the "cold moon". The full moon rises on the 4th and 5th of December, Thursday and Friday Evening.<ref>{{Cite web |last=iain.todd@ourmedia.co.uk |date=2025-12-04 |title=Tonight's full Moon is your last chance to see a supermoon in 2025. Here's how to make the most of it |url=https://www.skyatnightmagazine.com/news/last-supermoon-2025 |access-date=2025-12-04 |website=BBC Sky at Night Magazine |language=en}}</ref>
The supermoon of November 14, 2016, was the closest full occurrence since January{{nbsp}}26, 1948, and will not be surpassed until November{{nbsp}}25, 2034.{{zwj}}<ref>{{cite web |title=What is a supermoon? |url=https://earthsky.org/space/what-is-a-supermoon |website=EarthSky |access-date=November 14, 2016}}</ref>
The closest full supermoon of the 21st{{nbsp}}century will occur on December{{nbsp}}6, 2052.{{zwj}}<ref>{{cite web |title=Closest supermoon since 1948! |date=November 12, 2016 |url=https://earthsky.org/tonight/closest-supermoon-since-1948 |website=EarthSky |access-date=November 14, 2016}}</ref>
thumb|800px|center|alt=graph of Moon's distance from Earth against time; refer to text|Supermoons will be the marked points nearest the bottom of the graph.
The oscillating nature of the distance to the full or new moon is due to the difference between the synodic{{nbsp}}month{{zwj}}{{efn|The time it takes for the Moon to complete a full progression through its phases: one lunation.}} and anomalistic{{nbsp}}months.{{zwj}}<ref name="ephemeris" />{{zwj}}{{efn|The time it takes for the Moon to return to either of its orbital apses (perigee or apogee). This differs slightly from a lunation because the Moon's orbit gradually precesses around Earth. If the synodic and anomalistic months were identical, the Moon would always be the same distance from Earth for a given lunar phase.}} The period of this oscillation is about 14{{nbsp}}synodic months, which is close to 15{{nbsp}}anomalistic months. Thus every 14{{nbsp}}lunations there is a full{{nbsp}}moon nearest to perigee.
Occasionally, a supermoon coincides with a total lunar eclipse. The most recent occurrence of this by any definition was in May{{nbsp}}2022, and the next occurrence will be in October{{nbsp}}2033.{{zwj}}<ref name="ephemeris" />{{update after|2032|10|8}}
In the Islamic calendar (a lunar calendar), the occurrence of full supermoons follows a {{nowr|seven-year}} cycle. In the first{{nbsp}}year, the full{{nbsp}}moon is near perigee in month{{nbsp}}1 or 2, the next year in month{{nbsp}}3 or 4, and so on. In the seventh{{nbsp}}year of the cycle the full{{nbsp}}moons are never very near to perigee. Approximately every 20{{nbsp}}years the occurrences move to one{{nbsp}}month earlier. {{As of|2025|pre=Gregorian{{nbsp}}year}} such a transition is occurring, so full{{nbsp}}supermoons occur twice in succession. For example in {{langr|ar-Latn|Hijri|cat=no}} year{{nbsp}}1446, they occur both in month{{nbsp}}3 ({{itco|{{lang|ar-Latn|Rabīʿ al-ʾAwwal}}}}, on September{{nbsp}}18, 2024) and in month{{nbsp}}4 ({{itco|{{lang|ar-Latn|Rabīʿ ath-Thānī}}}}, on October{{nbsp}}17, 2024).
==Appearance== {{further|Moon illusion}}
thumb|alt=refer to nearby text|The supermoon of March 19, 2011 (right), compared to an average full moon of January 18, 2011 (left), as viewed from Earth A full moon at perigee appears roughly 14%{{nbsp}}larger in diameter than at apogee.{{zwj}}<ref>{{Cite news|url=https://www.space.com/34515-supermoon-guide.html|title=Supermoon 2018: When and How to See January's Two Full Moons|work=Space.com|access-date=2018-01-10}}</ref> Many observers insist that the Moon looks bigger to them. This is likely due to observations shortly after sunset when the Moon appears near the horizon and the Moon{{nbsp}}illusion is at its most apparent.{{zwj}}<ref>{{Cite news|url=https://www.skyandtelescope.com/observing/what-is-a-supermoon/|title=What Is A Supermoon? Facts vs. Fiction|date=November 8, 2016|work=Sky & Telescope|access-date=2018-01-10|language=en-US}}</ref>
While the Moon's surface luminance remains the same, because it is closer to the Earth the {{em|{{strong|i}}lluminance}} is about 30%{{nbsp}}brighter than at its farthest point, or apogee. This is due to the inverse square{{nbsp}}law of light, which changes the amount of light received on Earth in inverse proportion to the distance from the Moon. But, the perceived brightness will be the same; the Moon will just be smaller in one's field of view. That change in size is exactly proportional to the change in the amount of light.{{zwj}}<ref name="PhillipsNASA2011">{{cite news |url=https://science.nasa.gov/science-news/science-at-nasa/2011/16mar_supermoon/ |title=Super Full Moon |last=Phillips |first=Tony |date=March 16, 2011 |work=Science@NASA Headline News |access-date=June 22, 2013 |archive-url=https://web.archive.org/web/20120507035348/https://science.nasa.gov/science-news/science-at-nasa/2011/16mar_supermoon/ |archive-date=May 7, 2012}}</ref> A supermoon directly overhead could provide up to {{val|0.36|ul=lux}}.{{zwj}}<ref>{{cite journal|last1=Kyba|first1=Christopher C M|last2=Mohar|first2=Andrej|last3=Posch|first3=Thomas|title=How bright is moonlight?|journal=Astronomy & Geophysics|publisher=Oxford University Press|date=February 1, 2017|volume=58|issue=1|pages=1.31–1.32|doi=10.1093/astrogeo/atx025|issn=1468-4004|oclc=46686009|url=https://gfzpublic.gfz-potsdam.de/pubman/item/item_2022891_4/component/file_2029888/2022891.pdf}}</ref>
== Effects on Earth == Claims that supermoons can cause natural disasters, and the claim of Nolle that supermoons cause "geophysical stress", have been refuted by scientists.{{zwj}}<ref name="Discover" />{{zwj}}<ref>{{cite web |title=Earthquake FAQ |at=Can the position of the moon or planets affect seismicity? |url=https://seismo.berkeley.edu/outreach/faq.html#collapseMythFour |author=UC Berkeley Seismological Laboratory |publisher=self-published |date=n.d. |orig-date=First published 1999 |archive-url=https://web.archive.org/web/20251003095818/seismo.berkeley.edu/outreach/faq.html#collapseMythFour |archive-date=October 3, 2025 |url-status=live }}</ref>{{zwj}}<ref>{{cite web |last=Fuis |first=Gary |title=Can the position of the moon or the planets affect seismicity? |url=https://earthquake.usgs.gov/learn/faq/?faqID=109 |website=USGS Earthquake Hazards Program |access-date=March 14, 2011 |date=n.d. |archive-url=https://web.archive.org/web/20110507062850/http://earthquake.usgs.gov/learn/faq/?faqID=109 |archive-date=May 7, 2011 |url-status=live }}</ref>{{zwj}}<ref>{{cite web |last=Wolchover |first=Natalie |title=Will the March 19 "SuperMoon" Trigger Natural Disasters? |website=Life's Little Mysteries |url=http://www.lifeslittlemysteries.com/will-supermoon-cause-earthquake-storm-natural-disasters-1442/ |access-date=March 15, 2011 |date=March 9, 2011 |archive-date=March 15, 2011 |archive-url=https://web.archive.org/web/20110315010133/http://www.lifeslittlemysteries.com/will-supermoon-cause-earthquake-storm-natural-disasters-1442/ }}</ref>
Despite lack of scientific evidence, there has been media speculation that natural disasters, such as the 2011{{nbsp}}{{langr|ja-Latn|Tōhoku|cat=no}} earthquake and tsunami and the {{nowr|2004 Indian Ocean}} earthquake and tsunami, are causally linked with the {{nowr|1–2-week}} period surrounding a supermoon.{{zwj}}<ref>{{cite web|url=https://www.accuweather.com/en/weather-blogs/astronomy/extreme-super-full-moon-to-cause-chaos/52927|title=Extreme Super (Full) Moon to Cause Chaos?|last=Paquette|first=Mark|date=March 4, 2011|orig-date=First published March 1, 2011|work=Astronomy Weather Blog|publisher=AccuWeather|access-date=March 14, 2011|archive-url=https://web.archive.org/web/20200310020758/www.accuweather.com/en/weather-blogs/astronomy/extreme-super-full-moon-to-cause-chaos/52927|archive-date=March 10, 2020|url-status=live}}</ref> The {{nowr|7.5 magnitude}} 2016{{nbsp}}{{langr|mi|Kaikōura|cat=no}} earthquake in New{{nbsp}}Zealand also coincided with a supermoon.{{zwj}}<ref>{{cite web|url=http://www.geonet.org.nz/quakes/region/newzealand/2016p858000|title=GeoNet – Quakes|access-date=November 13, 2016}}</ref>{{zwj}}<ref>{{cite news|url=https://www.independent.co.uk/news/science/supermoon-biggest-history-2016-november-full-moon-big-december-a7394211.html |archive-url=https://ghostarchive.org/archive/20220525/https://www.independent.co.uk/news/science/supermoon-biggest-history-2016-november-full-moon-big-december-a7394211.html |archive-date=2022-05-25 |url-access=subscription |url-status=live|title=Supermoon: Biggest in living memory to appear in the sky, as 2016 ends with three huge full moons in a row|first=Andrew |last=Griffin |work=The Independent}}</ref> Tehran earthquake on May{{nbsp}}8, 2020, also coincided with a supermoon.
Scientists have confirmed that the combined effect of the Sun and Moon on the Earth's oceans, the tide,{{zwj}}<ref name="Plait2008">{{cite web|url=http://www.badastronomy.com/bad/misc/tides.html|title=Tides, the Earth, the Moon, and why our days are getting longer|last=Plait|first=Phil|author-link=Phil Plait|orig-date=First published 2008|work=Bad Astronomy|date=March 5, 2011|access-date=March 14, 2011}}</ref> is greatest when the Moon is either new or full.{{zwj}}<ref name="TideAnimation">{{cite web|url=https://oceanservice.noaa.gov/facts/springtide.html|title=What are spring and neap tides?|author=United States National Oceanic and Atmospheric Administration|publisher=self-published|date=June 16, 2024|orig-date=First published August 1, 2014|archive-url=https://web.archive.org/web/20250819053754/oceanservice.noaa.gov/facts/springtide.html|archive-date=August 19, 2025|url-status=live}}</ref> and that during lunar perigee, the tidal force is somewhat stronger,{{zwj}}<ref name="MoonConnection">{{cite web|url=https://www.moonconnection.com/apogee_perigee.phtml|title=Apogee and Perigee of the Moon|work=Moon Connection|date=n.d.|access-date=March 14, 2011|archive-url=https://web.archive.org/web/20250403012800/https://www.moonconnection.com/apogee_perigee.phtml|archive-date=April 3, 2025|url-status=live}}</ref> resulting in perigean spring tides. While this increased tidal force is relatively weak{{zwj}}<ref name="Plait20113">{{cite web |last=Plait |first=Phil |author-link=Phil Plait |date=March 11, 2011 |title=No, the 'supermoon' didn't cause the Japanese earthquake |url=http://blogs.discovermagazine.com/badastronomy/2011/03/11/no-the-supermoon-didnt-cause-the-japanese-earthquake/ |archive-url=https://web.archive.org/web/20191022195301/http://blogs.discovermagazine.com/badastronomy/2011/03/11/no-the-supermoon-didnt-cause-the-japanese-earthquake/ |archive-date=October 22, 2019 |access-date=March 14, 2011 |work=Discover Magazine}}</ref>{{zwj}}<ref>{{cite news |last=Rice |first=Tony |date=May 4, 2012 |title=Super moon looms Saturday |url=https://www.wral.com/weather/blogpost/11061791/ |access-date=May 5, 2012 |newspaper=WRAL-TV |publisher=Capitol Broadcasting Company |publication-place=Raleigh, NC |archive-url=https://web.archive.org/web/20241130081455/www.wral.com/weather/blogpost/11061791/ |archive-date=November 30, 2024 |url-status=live}}</ref>{{zwj}}{{efn|As an average of 1000 earthquakes of magnitude 5 or greater {{nowiki2|1=(18 >= magn. 7)}},{{zwj}}<ref>{{cite web|url=https://www.conservation.ca.gov/cgs/earthquakes|title=Earthquakes|date=n.d.|publisher=California Geological Survey|lang=en-us|access-date=2024-10-16|archive-url=https://web.archive.org/web/20240927054150/https://www.conservation.ca.gov/cgs/earthquakes|archive-date=2024-09-27|url-status=live}}</ref> and multiple "supermoons", occur yearly, the law of truly large numbers guarantees that over a sufficiently-long interval, numerous "large" earthquakes will occur around the time of supermoons. Refuting the null hypothesis ("there is no relation between the variables") would entail demonstrating evidence for an alternative hypothesis, such as a statistically significant increase in earthquake frequency around the time of certain events. The inverse—formulating a hypothesis, then looking back through already-gathered data to find support (and disregarding unsupportive data)—is known as data dredging (see also Texas sharpshooter fallacy, apophenia).}} in a global geophysical context, it can induce measurable local effects. For example, research based on 25{{nbsp}}years of daily observations on a sandy beach has shown that the larger tidal ranges produced by supermoons, known as king{{nbsp}}tides, make beach erosion in the upper swash{{nbsp}}zone more likely.{{zwj}}<ref>{{Cite journal |last=Masayuki |first=Banno |last2=Yoshiaki |first2=Kuriyama |date=November 5, 2020 |title=Supermoon Drives Beach Morphological Changes in the Swash Zone |journal=Geophysical Research Letters |volume=47 |issue=22 |publisher=American Geophysical Union |article-number=e2020GL089745 |doi=10.1029/2020GL089745 |doi-access=free |issn=1944-8007 |id={{CODEN|GPRLAJ}} |lccn=74646541 |oclc=1795290}}</ref> These {{nowr|long-term}} data indicate that beach morphology fluctuates in cycles related to the supermoon, and that erosion during high{{nbsp}}waves can be more severe when coincident with a supermoon.
== Super Blood Moon == thumb|alt=Photo of large, reddish Moon during a lunar eclipse|A Super Blood Moon on September 27, 2015 Total lunar eclipses which fall on supermoon and micromoon days are relatively rare. In the 21st{{nbsp}}century, there are 87{{nbsp}}total lunar eclipses, of which 28 are supermoons and 6 are micromoons. Almost all total lunar eclipses in Lunar Saros{{nbsp}}129 are micromoon eclipses.
The '''Super Blood Moon''' is an astronomical event that combines two phenomena: a supermoon and a total lunar eclipse, resulting in a larger, brighter, and reddish-colored Moon. A total lunar eclipse takes place when the Earth aligns between the Sun and the Moon, causing Earth's shadow to fall on the Moon. As the shadow covers the Moon, sunlight passing through Earth's atmosphere scatters, filtering out most blue{{nbsp}}light and casting a reddish hue on the Moon. This phenomenon is often called a blood{{nbsp}}moon because of its striking red or orange color.
When these two events coincide, the Moon appears both larger and redder than usual, leading to the term Super Blood{{nbsp}}Moon. This unique alignment creates a visually impressive and rare sight that has inspired folklore and intrigue for centuries. Super Blood Moons are relatively infrequent, occurring about once every few years, making them a notable event for astronomers and skywatchers alike.
== Annular solar eclipses == Annular solar eclipses occur when the Moon's apparent diameter is smaller than the Sun's. Almost all annular solar eclipses between 1880 and{{nbsp}}2060 in Solar Saros{{nbsp}}144 and almost all annular solar eclipses between 1940 and{{nbsp}}2120 in Solar Saros{{nbsp}}128 are micromoon annular solar eclipses.{{zwj}}<ref>{{Cite web|url=https://astropixels.com/ephemeris/moon/moonperap2001.html|title=Moon at Perigee and Apogee: 2001 to 2100|website=Astropixels|access-date=2018-11-19}}</ref>
==See also== * {{anl|Apsis}} * {{anl|Moon illusion}} * {{anl|Syzygy (astronomy)}} * {{anl|Wet moon}}
==Notes== {{notelist}}
==References== {{Reflist|30em}}
==External links== {{Sister auto}} * [https://www.fourmilab.ch/earthview/pacalc.html Lunar Apogee/Perigee Calculator] at Fourmilab * [https://www.astropro.com/features/articles/supermoon/ Richard Nolle's definition] * [https://www.astropro.com/features/tables/cen21ce/suprmoon.html Richard Nolle's list of supermoons in the 21st{{nbsp}}century] * [https://astropixels.com/ephemeris/moon/fullperigee2001.html Full Moon at Perigee (Super Moon): 2001 to 2100] by Fred{{nbsp}}Espenak * {{link with archives|http://www.check123.com/videos/13773-super-blue-blood-moon-2018|Super Blue Blood Moon 2018 {{!}} Check123 1 Minute Video|20220320094318 }} * [https://moonphasetoday.org/supermoon Supermoons and Micromoons] * [https://www.moonphase.info/supermoon Next Supermoons]
{{The Moon}} {{Portal bar|Astronomy|Stars|Spaceflight|Outer space|Solar System}} {{Authority control}}
Category:1979 neologisms Category:Articles containing video clips Category:Astrology Category:Astronomical events Category:Lunar observation