4D2U Project


Jun.11,2009 The developer of Mitaka, Tsunehiko Kato, presented and demonstrated Mitaka in the fifty-second session of the United Nations Committee on the Peaceful Uses of Outer Space (COPUOS) held at Vienna International Center, Vienna, Austria.
(Related link: COPUOS (UN))
Jun.8,2009 English page was updated.
Version 1.2.0 is available. Check out the revision history for details.
Jun.3,2009 The Japanese singer, MISIA, has used Mitaka visualization in the music video for her latest song "Ginga (galaxy)", which is the image song for the International Year of Astronomy 2009 Japan. You can see the music video at RhythmediaChannel (YouTube)
(Related links: MISIA Official Website, the International Year of Astronomy 2009 Japan Homepage)
Apr.8,2009 Mitaka visualization has been used in the movie "Cosmic View" which is included in the latest audio-visual CD/DVD "Virtual Resonance" by the contemporary music composer, Asako Miyaki (Te Pito Records). (See here for details (Japanese).)
Apr.8,2009 The total download counts of Mitaka exceeded 500,000.
Jul.20,2006 Version 1.0 beta 5 was released.

What is Mitaka?

Mitaka is software for visualizing the known universe with up-to-date observational data and theoretical models, developed by the Four Dimensional Digital Universe (4D2U) project of the National Astronomical Observatory of Japan (NAOJ). It navigates across the universe seamlessly from the Earth to the edges of the known universe.

Mitaka is optimized for 3D visualizations on multiple screens at the 4D2U theater in NAOJ's Mitaka headquarters. However, it can also be used on a single Windows PC.

Funding sources of the project are: "Construction of 4-Dimensional Digital Universe and Its Application to Research and Education" funded by Research and Development for Applying Advanced Computational Science and Technology of Japan Science and Technology Agency (ACT-JST: 2001-2004), and "Construction of an Image Distribution System for the 4-Dimensional Digital Universe" funded by the Special Coordination Fund for Promoting Science and Technology of the Japanese Ministry of Education, Culture, Sports, Science and Technology as part of their Program for the Effective Promotion of Joint Research with Industry, Academia and Government (2004-2007).

System Requirements

Recommended Minimum Hardware Configuration
OSWindows Vista/XP/2000(*)
CPUPentium4 1.8GHz or better
RAM512MB or more
Graphics AdapterGeForce 3 or better
Display Resolution1024x768 pixels or more
Hard Disk Space50MB or more

*) To use the software under Windows 2000, DirectX8.1 or above must also be installed. The latest version of DirectX Runtime can download from Microsoft.

It is possible to run the program on slower computers with the Pentium M chip (1.0 GHz) by carefully modifying default settings to reduce the texture resolution, for example.

Hardware Configuration at the 4D2U Theater
OSWindows XP
CPUPentium4 3.2GHz
Graphics AdapterNVIDIA GeForceFX 5900 Ultra
Display Resolution1024x768 pixels

We have not tested any other configuration. Please understand that we are not equipped to offer hardware recommendations. Some systems that meet the guidelines above may still have problems running the software.


Use this software at your own risk.

Mitaka is free for personal use.

This version does not include the topographical data and illustrations of constellations. The topographical data can be downloaded separately from the links below. The illustration of constellations would be released later.

Sorry, an English version of the manual is not available now. It will be released soon. For the present, please use this HTML document for reference.


Download the software using the following links. Please read the licensing agreement before installing and using the software.

The Latest Version

* Mitaka Version 1.2.0 (May 26, 2008 Released)
(ZIP File; 36,377,599 Bytes (approx. 35 MB) ) (History)

Older Versions

* Mitaka Version 1.0 Beta 5 (Jul. 20, 2006 Released)
(ZIP File; 32,711,582 Bytes (approx. 31 MB) )

Topographical Data

The topographical data for Earth and Mars can be downloaded from the following links.

Caution: The sizes of the files are large.

* Topographical Data for Earth
(ZIP File; 33,385,825 Bytes (approx. 32 MB) )

* Topographical Data for Mars
(ZIP File; 130,911,334 Bytes (approx. 124 MB) )

How to Use:
First, unzip the downloaded file. Then, copy the file "earth_topo.dat" or "mars_topo.dat", which are generated by unzipping the downloaded file, into the data folder in the Mitaka folder. You can view the topography of Earth or Mars after the next launch of Mitaka.

Software Development

The author of Mitaka is Tsunehiko Kato (CfCA/4D2U NAOJ).


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