Orionid Meteor Shower 2018

Orionid Meteor Shower 2018

17/10/2018Written by Tamela Maciel

In 2018, the Orionids peak on the night of Sunday 21 October, with up to 20 meteors per hour.

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Orionid Meteor Shower

Orionid Meteor Shower
Orionid Meteor Shower
Halley's Comet in 1986. Credit: NASA/W. Liller

Meteor shower alert! – the Orionids are coming to a night sky near you. In 2018, peak activity occurs on the night of Sunday 21 October, but meteors may be seen until early November.

Twice a year, the Earth crosses the orbital path of Halley’s Comet – once in May and once in October. Comets constantly shed dust and stones as they fly around the Sun, and it is this debris along Halley’s path that causes the Orionids. The debris hits Earth’s atmosphere at nearly 150,000 kilometres an hour and burns up in bright, short blazes about 80 kilometres off the ground. In May this same debris trail causes the Eta Aquarid meteor shower.

Halley’s Comet takes 76 years to orbit the Sun and will next be visible from Earth in 2061.

When to view meteors

Credit: Stellarium

Credit: Stellarium

The Orionids are named after the famous Orion constellation as this is the direction from which they appear to originate. While the meteors originate from this point they can be best seen 30 degrees away from Orion, stretching across large sections of the sky. 

To view the Orionids from the UK, head outside after midnight on the night of 21 October.

Look up, keep an eye on the whole sky, and find as dark a location as you can!

In 2018, the nearly full Moon will obscure the fainter meteors, but the Orionids tend to be fairly bright and could still put on a good show.

You do not need to look in any particular direction. Lean back, let your eyes adjust to the dark, and watch the whole sky (it helps to have friends look in different directions).

The darker the location the better, so find the darkest sky you can away from city lights.

As always in the UK, clouds can be an issue, but be patient.

You can look for the Orionids on other nights as well. This shower runs annually between 2 October and 7 November.

Credit: Stellarium

Meteor Infographic

Meteor Infographic

Download our National Space Centre Meteor Shower Guide to make sure you are fully prepared to watch the Orionids!

Other upcoming meteor showers for 2018 include:

Taurids

Comet of Origin: 2P/Encke
Radiant: constellation Taurus
Peak Activity: 4-5 Nov 2018
Peak Activity Meteor Count: 10-20 meteors per hour

Leonids

Comet of Origin: 55P/Tempel-Tuttle
Radiant: constellation Leo
Peak Activity: 17-18 Nov 2018
Peak Activity Meteor Count: 10-20 meteors per hour
Notes: Strong moonlight may interfere this year.

Geminids

Comet of Origin: 3200 Phaethon
Radiant: constellation Gemini
Peak Activity: 13-14 Dec 2018
Peak Activity Meteor Count: 120 meteors per hour

Ursids

Comet of Origin: 8P/Tuttle
Radiant: constellation Ursa Minor
Peak Activity: 21-22 Dec 2018
Peak Activity Meteor Count: 10 meteors per hour
Notes: Strong moonlight may interfere this year.

Clear skies!