The International Meteor Organization (IMO) was founded in 1988 and has more than 250 members now. IMO was created in response to an ever growing need for international cooperation of meteor amateur work. The collection of meteor observations by several methods from all around the world ensures the comprehensive study of meteor showers and their relation to comets and interplanetary dust.

You can read about the history, current aims and commissions of IMO. An additional page informs you about how to become a member the International Meteor Organization. Membership includes a subscription to WGN, the journal of the IMO.

Short term meteor activity outlook - Report your observations - Live ZHR graphs - Data archives - Observing handbook - Annual conference

You can help the International Meteor Organization too!

IMO work is done entirely by volunteers, and helping hands are most valuable. You can help IMO a lot, even by performing small tasks! If you are willing to help, please send us a mail and mention how you would like to help us:

  • I volunteer to write news items for the new IMO website* (in a team of website editors)
  • I volunteer to react to posts on the new IMO website (in a team of website editors)
  • I volunteer to proofread pages on the new IMO website (in a team of proofreaders for the IMO website)
  • I volunteer to be the webmaster of the new IMO website: coordinating the editors, making sure all pages are working as they should
  • I volunteer to edit 1 or 2 papers per year for IMO’s journal WGN (in a team of WGN editors)
  • I volunteer to proofread papers for WGN (in a team of WGN proofreaders)
  • I volunteer to answer questions from beginners, and to extend the FAQ section of the IMO website (in a team of similar volunteers)
  • I’ve got a specific suggestion: …
* The brand new IMO website will be launched in 2016

Huge Fireball caught on Video over Maine (USA)

The IMO and the American Meteor Society have received more than 330 reports so far about a fireball event over Northeastern US on May 17th 2016 around 12:50am EDT (4:50 UT). The fireball was seen primarily from Maine but witnesses from Vermont, New Hampshire, New Jersey, Massachusetts, New York, Rhode Island, Pennsylvania, Connecticut, Ontario (Canada) and Québec (Canada) also reported the event.

The fireball has been caught by the webcam of the Portsmouth harbour:

IMO #1750-2016IMO Event #1750-2016 - Ground trajectory and Witnesses location

More info (photos, videos and maps) about this fireball can be found on the American Meteor Society website.

WGN 44:2 out now

WGN 44-2

The April 2016 issue of the IMO Journal is now in print. It will be mailed shortly and subscribers can also immediately access the journal in PDF format. The contents this month:

  • About the definition of meteoroid, asteroid, and related terms (J. Borovička)
  • Letter — The CMN catalogue of orbits for 2013 (Croatian Meteor Network)
  • A surprise southern hemisphere meteor shower on New-Year’s Eve 2015: the Volantids (IAU#758, VOL) (P. Jenniskens, J. Baggaley, I. Crumpton, P. Aldous, P.S. Gural, D. Samuels, J. Albers, R. Soja)
  • Observation error propagation on video meteor orbit determination (SonotaCo)
  • Results of the IMO Video Meteor Network — November 2015 (S. Molau, S. Crivello, R. Goncalves, C. Saraiva, E. Stomeo, J. Kac)
  • Results of the IMO Video Meteor Network — December 2015 (S. Molau, S. Crivello, R. Goncalves, C. Saraiva, E. Stomeo, J. Kac)

Front cover image: New Year's Eve meteor shower. Illustration: Danielle Futselaar/SETI Institute.


Bright Fireball over South of the Netherlands on March, 25th 2016

The International Meteor Organization received over 50 reports so far about a fireball event over the Netherlands on March 25th 2016 around 23:00 GMT. The fireball was seen primarily from Belgium and from the Netherlands but witnesses from France, Luxembourg and the UK also reported the event.

If you saw this fireball, please report it here.

Below is the ground trajectory of the fireball’s entry plotted by the IMO using data from the witness sightings. This map shows also the location of the witnesses.

IMO #1157-2016IMO Event #1157-2016 - Ground trajectory and Witnesses location
This event has been caught on tape by Klaas Jobse from Oostkapelle (the Netherlands):
The fireball has also been captured by the French Network FRIPON (Fireball Recovery and InterPlanetary Observation Network) from Lille, Arras et Cappelle la Grande (North of France).
IMO#1157-2016 IMO Event #1157-2016 - Image by FRIPON

Very large fireball over UK

The International Meteor Organization received over 45 reports so far about a fireball event over UK (England) on Thursday, March 17th 2016 around 3:16 GMT. The fireball was seen primarily from England but witnesses from France and the Netherlands also reported the event. We expect more reports today.

If you witnessed this event please fill an official fireball report.

Below is the map of the first witnesses location and the first estimation of the ground trajectory:
Below is a video of the event caught from London by a Twitter user.
Below is a video of the event. It was recorded by out Church Crookham station (https://www.ukmeteornetwork.co.uk/2016/03/huge-fireball-17-march-2016-at...)

WGN 44:1 out now

WGN 44-1

The February 2016 issue of the IMO Journal is now in print. It will be mailed shortly and subscribers can also immediately access the journal in PDF format. The contents this month:

  • Janus (C. Verbeeck)
  • Erratum: Observation of April alpha Capricornids (IAU#752 AAC)
  • Erratum: χ Cygnids observation in Japan
  • Erratum: Results of the IMO Video Meteor Network — August 2015
  • Confirmation of the χ Cygnids (CCY, IAU#757) (J. Koukal, J. Srba, J. Tóth)
  • CAMS detection of P-R evolved cm-sized meteoroids (P. Jenniskens)
  • STRATO 02/2015 – The Perseids 2015 stratospheric balloon mission (J. Koukal,, J. Srba, L. Lenža, J. Kapuš, J. Erdziak, R. Slošiar)
  • R suite for the Reduction and Analysis of UFO Orbit Data (P. Campbell-Burns, R. Kacerek)
  • Results of the IMO Video Meteor Network — September 2015 (S. Molau, S. Crivello, R. Goncalves, C. Saraiva, E. Stomeo, J. Kac)
  • Results of the IMO Video Meteor Network — October 2015 (S. Molau, S. Crivello, R. Goncalves, C. Saraiva, E. Stomeo, J. Kac)

Front cover image: Fireball on 2015 March 11 from Benningbroek, The Netherlands. Image courtesy: Jos Nijland.