KAGUYA Launches

In June, we discussed the naming of Japan’s new lunar study — what many consider the most sophisticated lunar exploration mission in the post-Apollo Era. It is also Japan’s first major lunar mission. Last Friday morning, the spacecraft launched from Tanegashima island, 600 miles south-west of Tokyo, aboard an H-2A solid-fuel rocket:

ScienceDaily has the project details:

The mission of the SELenological and ENgineering Explorer “KAGUYA” (SELENE), Japan’s first large lunar explorer, is being keenly anticipated by many countries.

The major objectives of the mission are to understand the Moon’s origin and evolution, and to observe the moon in various ways in order to utilize it in the future. The lunar missions that have been conducted so far have gathered a large amount of information on the Moon, but the mysteries of its origin and evolution have been left unsolved.

KAGUYA will investigate the entire moon in order to obtain information on its elemental and mineralogical composition, its geography, its surface and sub-surface structure, the remnant of its magnetic field, and its gravity field. The results are expected to lead to a better overall understanding of the Moon’s evolution.

At the same time, the observation equipment installed on the orbiting satellite will observe plasma, the electromagnetic field and high-energy particles. The data obtained in this way will be of great scientific importance for exploring the possibility of using the moon for human endeavors.

KAGUYA consists of the Main Orbiter and two small satellites (Relay Satellite and VRAD Satellite). The Main Orbiter will reach the vicinity of the Moon. Once it has reached the Moon, it will be placed into a peripolar orbit at an altitude of 100 km. The Relay Satellite will be placed in an elliptic orbit at an apogee of 2400 km, and will relay communications between the Main Orbiter and the ground station. The VRAD Satellite will play a significant role in measuring the gravitational field around the Moon. The Main Orbiter will be employed for about one year and will observe the entire Moon.

Is this the start of an Asian Space Race? The Guardian sees some evidence:

While Jaxa officials play down talk of a space race with China, the mission is a major step towards the goal of building a manned station on the moon by 2025, and a sign of renewed regional interest in lunar exploration. China is to send its Chang’e-1 probe to the moon this year to construct 3-D images of the moon’s surface and analyse its dust. India is expected to launch an unmanned lunar orbiter next year.