When and how to see the first supermoon of the year in August

The first supermoon of 2024 will light up the night sky in August.

The most recent full supermoon occurred on September 29, 2023.

So what is the celestial phenomenon and when can you next see it?

Here’s what you need to know.

What is a supermoon?

A supermoon is a full moon (or a new moon) that coincides with the moon's closest approach to Earth in its elliptical orbit, known as perigee. This results in the moon appearing larger and brighter than usual.

Astrologer Richard Nolle coined the word in 1979. He defined it as a new or full moon that occurs when the moon is within 90 per cent of its closest approach to Earth in a given orbit.

Although the term originated in the context of astrology, it has since been widely adopted by the general public and commonly used in popular science and media to describe this astronomical phenomenon.

Here are some key points about supermoons:

1. Perigee syzygy: Supermoon is not an official astronomical term but rather a popular one. Astronomers refer to this phenomenon as "perigee syzygy." "Syzygy" refers to the alignment of the Earth, moon, and sun.

2. Orbital mechanics: The moon's orbit around Earth is not a perfect circle but an ellipse. This means there are times when the moon is closer to the Earth (perigee) and times when it is farther away (apogee). A supermoon occurs when a full moon coincides with a perigee.

3. Visual impact: During a supermoon, the moon can appear up to 14 per cent larger and 30 per cent brighter than at its farthest point from Earth (apogee). However, the difference might not be easily noticeable to the casual observer without a direct comparison.

4. Frequency: Supermoons are relatively common, with about three to four occurring annually. The exact appearance and impact of each supermoon can vary depending on the specifics of the moon's orbit and its position relative to Earth and the sun.

5. Cultural significance: Supermoons often garner significant attention and are sometimes associated with various cultural myths and folklore. They are also popular subjects for photography and astronomy enthusiasts.

A woman takes pictures of a supermoon rising above Lisbon, Portugal, in August 2023 (AP)

When and to see the first supermoon of 2024 in August

The first supermoon of the year will arrive on August 19. The best glimpse is likely at exactly 7.26pm when the moon will first come into view.

Here are some viewing tips”

Best viewing conditions:

1. Clear skies: Check the weather forecast for clear skies. Cloudy or rainy weather will obstruct the view of the moon.
2. Low light pollution: Try to find a location away from city lights and other sources of light pollution. Rural areas, parks, or elevated locations can provide a better viewing experience.
3. Horizon visibility: Ensure you have a clear view of the eastern horizon where the moon will rise. As the night progresses, the moon will move across the sky.

Viewing tips:

1. Use binoculars or a telescope: While the supermoon is visible to the naked eye, using binoculars or a telescope can enhance the details and make the experience more enjoyable.

2. Photography: If you plan to take photos, use a camera with a good zoom lens, and a tripod to keep the camera steady for clear shots.

Checking the exact moonrise and moonset times:

• You can use online tools or apps, such as timeanddate.com or a moon phase app, to find the exact moonrise and moonset times for your specific location in the UK.

Safety:

• Always be mindful of your surroundings, especially when visiting remote or unfamiliar areas at night.

When are the next supermoons in 2024?

• September 18: A super Harvest Moon with a partial lunar eclipse.
• October 17: A super Hunter's Moon, the brightest of 2024 because the moon will be at its closest point to Earth.
• November 15: A supermoon.