Goals: KAGUYA, initially named SELENE (SELenological and ENgineering Explorer) was a Japanese mission to map the Moon's surface and study lunar origins and evolution. It also carried two smaller satellites to study the Moon's gravity and ionosphere. This mission served as an engineering test for future deep space missions.

Accomplishments: KAGUYA concluded a successful two year mission of lunar exploration with a planned impact on the lunar surface. The impact plume was observed by Earth-based telescopes.

Mission Type: Impact, Orbiter
Launch Vehicle: H-2A
Launch Site: Tanegashima, Japan
Spacecraft Mass: 1984.0 kg
Spacecraft Instruments:

1) Multi-band Imager
2) Terrain Camera
3) High Definition TV Camera
4) Spectral Profiler
5) X-ray Spectrometer
6) Gamma-ray Spectrometer
7) Radar Sounder
8) Laser Altimeter
9) Magnetometer
10) Plasma Imager
11) Charged Particle Spectrometer
12) Plasma Analyzer
13) Radio Science Equipment

Spacecraft Power:Solar array
Maximum Power: 3486 W
References:
NSSDC Master Catalog: Kaguya, http://nssdc.gsfc.nasa.gov/nmc/spacecraftDisplay.do?id=2007-039A

JAXA: KAGUYA (SELENE), http://www.kaguya.jaxa.jp/en/index.htm


KAGUYA is a Japanese Space Agency (JAXA) lunar orbiter mission. KAGUYA is named for Kaguya-hime (Princess Kaguya), a visitor to Earth from the Moon in a 10th century Japanese folk tale "Taketori Monogatari" (The Tale of the Bamboo Cutter) and was formerly called SELENE (SELenological and ENgineering Explorer).

The primary objective of the mission was a global survey of the Moon, as well as obtaining data on elemental abundance, mineralogical composition, topography, geology, gravity and the lunar and solar-terrestrial plasma environments. This mission served as an engineering test for future deep space missions.

The mission consists of three satellites, an orbiter containing most of the scientific equipment, a VLBI (Very Long Baseline Interferometry) Radio (VRAD) satellite named Ouna and a relay satellite named Okina designed to receive a doppler ranging signal from the orbiter when it is around the far side of the Moon and transmit the signal to Earth in order to estimate the far-side gravitational field.

KAGUYA launched 14 September 2007 on an H-IIA rocket from Tanegashima Space Center. Separation of the spacecraft from the launch vehicle occurred 45 minutes and 34 seconds after launch. KAGUYA deployed its solar panels and high-gain antenna, and completed two orbital maneuvers, the last on 17 September to put it into a 924 x 232,731 km Earth orbit with a period of 4 days, 23 hours and 33 minutes. After three more correction maneuvers, a lunar transfer trajectory injection burn was conducted. KAGUYA carried out its first lunar orbit injection at 21:20 UT on 3 October (6:20 a.m. October 4 JST) and entered a 101 x 11,741 km lunar orbit with a period of 16 hours, 42 minutes. The spacecraft made 6 orbit-transfer maneuvers to lower the orbit to a 118 minute, 80 x 128 km polar science orbit by 19 October. During the transition to lower orbit, the relay satellite Okina was released into a 100 km x 2,400 km polar orbit on 9 October at 00:36 UT and the VRAD satellite Ouna was released into a 100 x 800 km orbit at 04:28 UT on 12 October. Normal operations from orbit for the KAGUYA spacecraft started on 20 October.

KAGUYA concluded a successful two year mission of lunar exploration with a planned impact on the lunar surface. The impact plume was observed by Earth-based telescopes.

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