Largest and Closest ‘Super Moon’ – On 23 June 2013 – Facts

Picture about Largest and Closest 'Super Moon' - On 23 June 2013
Largest and Closest 'Super Moon' - On 23 June 2013


Super Moon June 23, 2013

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Super Moon – June 23, 2013

This year’s largest and closest “Super Moon” will occur on June 23, 2013. This super full moon is not only the closest and largest full moon of the year, it also presents the moon’s closest encounter with earth in a long time.


The messages suggest that on 23 June 2013, people on earth are going to witness the largest and closest ‘Super Moon’ in a long time. The claim is a fact, with some misinformation.

What is Supermoon

A Supermoon is that particular full moon or a new moon when the moon approaches closest to the earth while on its elliptical orbit. This results in the largest apparent size of the moon as seen from earth. While astronomers call this close full moon a Perigee Full Moon, the term ‘supermoon’ is more of astrological than scientific. But for this apparent larger size, there is nothing peculiar about this supermoon phenomenon, and on an average, it happens once in every year. The last perigee supermoon happened to be on 6 May 2012, and the next one is expected to be in August, 2014.

Effect on Earth

Since combined effect of the Sun and Moon on the Earth’s oceans results in tides, there came up claims that the supermoon phenomenon is associated with increased risk of such events, including earthquakes and volcanic eruptions. But there is no scientific evidence for such a link, the effect of perigee supermoon on tides is quite weak to cause major tidal differences. The video shown below is a NASA explanation of this perigee full moon phenomenon.

Sight of Perigee Supermoon

The sight of the perigee supermoon on 23 June 2013 will nevertheless be a good experience, as the full moon is going to be larger and brighter than the normal one. During these events, the moon can appear up to 14 % bigger and 30 % brighter to the skywatchers on Earth. In the image below, you can see the picture of this Supermoon sighted over Munster, Germany on 19 March 2011. The following picture also shows how big the full moon was when compared to the average moon on 20 December 2010, as viewed from the Earth.

Picture of Supermoon Sighted over Munster, Germany
Supermoon Sighted over Munster, Germany
Picture of Comparison: Average - Supermoon
Comparison: Average – Supermoon

This biggest full moon of 2013, the perigee supermoon will occur on 23 June 2013 at 7:32 a.m. EDT, 6:32 a.m. CDT, 5:32 a.m. MDT and 4:32 a.m. PDT, while in India, this supermoon starts from 5:02 p.m. For those of you who want to see it ‘appear’ much bigger, watch the full moon when rising behind distant objects on the horizon, like through buildings and trees. Low hanging full moon appears bigger because of the ‘moon illusion’.

Hoax or Fact:

Fact with some misinformation.



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Prashanth Damarla