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Starscape photo:
Yasuhiko ENDO


1st Circular


We are pleased to invite you all to the 2023 Asia-Pacific Regional IAU Meeting (APRIM 2023) in Japan at the BIG PALETTE FUKUSHIMA in Koriyama City, Fukushima Prefecture, from August 7 to August 11, 2023.

Taking place once every three years, APRIM is one of the largest regional meetings of the IAU, where astronomers in the Asia-Pacific region gather to discuss common scientific interests and contribute to astronomy advancement internationally. New Zealand hosted the first APRIM in 1978, and since then, the meeting has been held regularly until 2020, when the COVID-19 pandemic forced its cancellation. Japan has hosted this IAU Regional meeting twice, in 1984 in Kyoto and 2002 in Tokyo. 2023 will be the third APRIM held in Japan.

For this edition, we are planning to provide the participants with an enriched full IAU experience while making a significant impact in the astronomy and related science in the region through international collaboration. By being mindful of regional and national contexts in this diverse communities in Aria-Pacific region, we strive to make this APRIM 2023 Japan be respectful, tolerant and inclusive throughout all its discussions, thus promote competitiveness in research and bring innovation through regional collaborations.

APRIM2023 will be one of the first large regional conferences in astronomy after the pandemic, and we all will be cautious in its implementation drawn from recent lessons learnt from the international community and the previous experience in organizing hybrid and accessible meetings. The LOC wishes APRIM 2023 to be a relevant and impacting experience for both participants online and onsite.

Additionally, we are honored that Fukushima Prefecture was selected as the venue, aiming to support the recovery from the earth-quake accompanied by the major nuclear power plant disaster in 2011. We wish that this hosting area also reflects meaningfully on the participants’ personal experience: by visiting the ‘tsunami afflicted’ area and meeting first-hand the community that is hosting us; and to participate in astrotourism and astrophotography activities under the mesmerizing dark skies of Fukushima.

Although we are still in a difficult situation with the COVID-19 pandemic, the LOC has diligently started all preparations in hopes of giving you a warm and friendly welcome to APRIM 2023 Japan.


The session will be decided by the SOC based on those planned for APRIM2020.


The Asia-Pacific Regional IAU Meeting 2023 (APRIM 2023) will be held from August 7-11, 2023, at the BIG PALETTE FUKUSHIMA in Koriyama City, Fukushima Prefecture, Japan.

Fukushima Prefecture is located on the Pacific Ocean side in the Tohoku (literally north-east) region of Japan. Fukushima is famous for its beautiful nature, fruits and rice grown in that area, delicious sake (alcohol drink), hot springs, traditional crafts such as Aizu-nuri. There are beautiful mountains and lakes, and there is a starry sky.

In 2011, the Tohoku region, including Fukushima, suffered from a big earthquake, followed by a tsunami, a huge tidal wave (more than nine meters in maximum) at the ocean side. The tsunami has caused the ocean-faced nuclear power plant disaster, as you already know. Even today, the people in Fukushima continue their efforts for reconstruction and decontamination.

You can learn the work that has been done within Fukushima post-disaster and general background into the prefecture through the brochure in multiple languages prepared by the Fukushima local government.

Koriyama City is located at the Naka-dori (Central region) of Fukushima Prefecture. You can reach Koriyama Station from Tokyo in 80 minutes by Shinkansen (high-speed train). You can find out more about Koriyama in the brochure

The conference site BIG PALETTE FUKUSHIMA is located at approx. 4 km from Koriyama Station in 15 minutes by bus, 10 minuets by taxi.


Jan. 16, 2023
Open for Abstract submission and Registration
March 10, 2023
Abstract Deadline
May 31, 2023
Deadline for early registration
Jun. 01, 2023
Deadline for VISA assistance
Aug. 7, 2023
Meeting start

Further detailed information will be available and be timely updated.

2nd Circular

Second announcement of the Asia-Pacific Regional IAU Meeting (APRIM 2023)

Dear Colleague:

We would like to draw your attention to the following announcement (apologies if you receive more than one copy). Please distribute to all interested colleagues.

Junichi Watanabe (NAOJ), on behalf of the LOC

2nd announcement of the Asia-Pacific Regional IAU Meeting (APRIM 2023)
August 7-11, 2023, hybrid (in-person at Koriyama, Japan plus online)

Main topic of this announcement: Abstract submission and Registration system opened, updated information on financial and VISA support


The Website has been significantly updated, including local information, registration procedures and fees, a list of the review and invited speakers, the tentative schedule, and other events.

Session details:
1. Planets In and Outside of the Solar System
2. Physics and Evolution of the Sun and the Stars
3. From ISM to the Stellar and Planetary Systems
4. Compact Objects and High Energy Astrophysics
5. Galaxy, Galaxies and their Beginnings
6. Multi-messenger Astronomy
7. Telescopes and Detector Projects On and Out Of the Grounds
7S. Sub-session Future of research cooperation in Asia-Pacific Region (Invited ONLY)
8. Networking the Public Outreach, Development and Sustainability
9. Astroinformatics in Big Data Era


The abstract submission and registration system has been open since January 16, 2023. Further detailed information is available at


Registration and abstract submission have been opened. Please visit the website and submit your contribution and application.
Abstract submission:


Visa application and travel grant application have been opened. Please visit the following website for more information.
VISA application:
Travel grant application:


Open for Abstract submission and registration
Deadline for abstract submission and finncial support application
Deadline for early registration
VISA application deadline
Meeting start

Further detailed information will be available and be timely updated.