Welcome to the IOTA/EA home page.
How to Submit an Occultation Report?
What’s new
- Server maintenance (Aug. 16-17)IOTA/EA web server will be temporally stopped between August 16th and 17th, 2025 (JST) for server maintenance.
- PHAETHON OCCULTATION OBSERVATION CAMPAIGN AND DATA ANALYSIS WORKSHOP – 2025Dear IOTA/EA members We will hold a Phaethon occultation observation campaign and an observationworkshop. Location:だて歴史の杜カルチャーセンター 視聴覚室 （入場無料） 〒052-0012 北海道伊達市松ヶ枝町34番地1 TEL 0142-22-1515 FAX 0142-22-1155 JR北海道伊達紋別駅からタクシー約8分 *https://culture.dcpc.jp/* Date: September 19, 202509:00-12:00 Occultation Observation Frontline13:00-17:00 Occultation Observation Frontline + Observation Briefing Individual dinner, then move to observation site. After observation, go home.Phaethon occultation observation at 1:52 am (JST)…
- Registration for the FY2025/26 Annual Meeting availablePlease register your participation from the page IOTA/EA FY2025/26 Annual General Meeting on Aug 31
- IOTA/EA FY2025/26 Annual General Meeting (1st Circular)We are pleased to inform you about the FY2025/26 Annual General Meeting of IOTA/EA. This year’s meeting will be held remotely on 2025 Aug 31(Sun). Please visit the page IOTA/EA FY2025/26 Annual General Meeting (1st Circular)
- Member applications for FY2025/26Member applications for the upcoming FY2025/26 season (August 2025 to July 2026) are now available. The membership fee for FY2025/26 is now being accepted. Please visit the page Join IOTA/EA
- IOTA/EA Phaethon Stellar Occultation Observation Campaign 2024
Asteroid (3200) Phaeton has been predicted to occult a 12.5 magnitude star on November 16, 2024 (see https://fumi-yoshida.wixsite.com/occultation-ws/phaethon2024obs for details), and IOTA/EA has organized a campaign to observe Phaeton’s stellar occultation. We set up 18 observation sites in Japan and 4 in China. 63 people participated. The observation reports are available here. Despite the wide coverage from… - IOTA/EA Occultation Observations Workshop 2024 in Kobe
The IOTA/EA Occultation Observations Workshop was held at Kobe University on November 16-17, 2024. Here (https://fumi-yoshida.wixsite.com/occultation-ws) is for the detailed page (in Japanese). This is the fourth workshop. This time we will go out to observe stellar occultation by Phaethon between the 16th and 17th of the first and second days of the workshop, which…
Annoucements
2025/03/03
Asteroidal Occultation Prediction 2025 updated March table.
2025/02/01
Asteroidal Occultation Prediction 2025 updated February table.
2025/01/03
Asteroidal Occultation Prediction 2025 updated January table.
2024/4/29
Campaign
2025/9/19 : 16h52mUT
Asteroidal occultation by (3200)Phaethon
2024/11/16 : 18h56mUT
Asteroidal occultation by (3200)Phaethon
The flyby target body for the DESTINY+ mission (link to HAL site)
NOTICE about translation
Our web pages may be translated into any language other than English by machine translator GTranslate or human; provided, however, the English text shall prevail in any event.