SELENE ““KaguyaKaguya””
SELenological and ENgineering Explorer
SELENE (Kaguya) will conduct lunar global mapping with 15 missions, leading to a thoroughunderstanding of lunar crust, interior, and surrounding environments, especially・first direct gravimetry of lunar far-side by 4way doppler method.
・detailed subsurface structure by ground-penetrating radar sounder.
・high sensitive identification of elements using Germanium gamma-ray detector.
and other high precision observations of surface chemistry, mineralogy, geomorphology,magnetism, internal structure, plasma environments, etc.

SELENE Mission

12m Mast for
Magnetometer

Objecti es
Objectives:- Science of /on/ from the Moon (Global Survey of the Moon ) :Composition, 3D-Topography, Gravity, Magnetism, Eeinvironments- Technology development for future lunar exploration :Lunar Insertion, Orbital Correction Maneuver, Telecommunication- Public outreach of the Lunar exploration : Broadcasting
High-Definition TV movie of the Earth-rise /Moon surface

Mission Orbit：- Main Orbiter : 100 [km] (circular),- Rstar :100 x 2400 [km] (elliptical),- Vstar : 100 x 800 [km] (elliptical),Solar Array Paddle
4 Antennas for
Radar Sounder

Upper atmosphereand Plasma Imager

Plasma energy Angle andComposition Experiment

Charged Particle
Spectrometer
X-RaySpectrometer
StarTrucker- Mission : 10 Mbps (X(X-band)band)- House Keeping : 40 Kbps (S-band)

Moon Center

Laser
Altimeter

Gamma-RayG
R
Spectrometer

ThermalLouverPlasma energy Angle andComposition Experiment

ThermalRadiator

1NThruster

Gamma-ray Spectrometer (GRS)

Global mapping of U, Th, K, major elements, distribution using 250 cm3 large pure Ge crystal, Spatial
resolution 100 km, Energy range 0.1-10 MeV

Multi-band Imager (MI)UV-VIS-NIR CCD & InGaAs imager, spectral bandwidth from0.4 to 1.6 microns, 9 bands filters, spectral
resolution 20-30 nm, spatial resolution 20-60 m

Spectral Profiler (SP)Continuous spectral profile ranging from 0.5 to 2.6 microns, spectral resolution 6-8 nm, spatial resolution 500 m

Terrain Camera (TC)High resolution stereo camera, spatial resolution 10 m

Lunar Radar Sounder (LRS)

Mapping of subsurface structure using active sounding
sounding, frequency 5 MHzMHz, echo observation range 5 kmkm,
resolution 75 m, Detection of radio waves (10k-30MHz) from the Sun, the Earth, Jupiter, and other planets

Laser Altimeter (LALT)Nd:YAG laser altimeter, 100 mJ output power, height resolution 5 m, spatial resolution 1600 m with pulse rate 1Hz, Beam divergence 3 mrad

Differential VLBI Radio Source (VRAD)

Differential VLBI observation from ground stations, selenodesy and gravitational field, onboard two sub-satellites,
3 S-bands and 1 X-band

Relay Satellite Transponder (RSAT)

Far-side gravimetry using 4 way range rate measurement from ground station to orbiter via relay satellite,perilune 100 km, apolune 2400 km in altitude, Doppler accuracy 1 mm/s

Lunar Magnetometer (LMAG)

Magnetic field measurement using flux-gate type magnetometer, accuracy 0.5 nT

Charged Particle Spectrometer (CPS)

Measurement of high-energy particles, 1-14 MeV(LPD), 2-240 MeV(HID), alpha particle detector, 4-6.5 MeV

Plasma Analyzer (PACE)

Charged particle energy, angle and composition measurement, 5 eV/q – 28 keV/qRadio Science (RS)

Detection of the tenuous lunar ionosphere using S and X-band carriers

Plasma Imager (UPI)

Observation of terrestrial plasmasphere from lunar orbit, XUV(304A) to VISHigh Definition Television (HDTV)

Taking pictures and movies of the Earth and the Moon with high-definition television

500NThruster

Science Goals: Global Survey of the Moon

- Selected to achieve the science goals- Integrated science topics : crustal evolution, tectonics inlunar maria, multi-ring basin formation, ices in polar region
Global mapping of Al, Si, Mg, Fe distribution using 100 cm2 CCD, spatial resolution 20 km, Energy range 0.7-8keV, 5μm Be film, Solar X-ray monitorOmni
AntennaHigh Definition
Television

Schedule:

X-ray Spectrometer (XRS)

Solar
ArrayPaddle

SpectralProfiler

Telemetry：

SELENE 15 Observation Missions
Instruments:

VRAD Satellite Relay Satellite(V-star)(R-star)Terrain Camera,
Multiband Imager

Launch on
14 Sep 2007

- Launch: 14 Sep 2007 by H-2A-13,- LOI: 4 Oct 2007
- Duration：1.1year (plus optional extended mission)

Rstar “Okina”
100 x 2400 km

Vstar “Ouna”
100 x 800 km

Spacecraft Configuration：- Main Orbiter : size : 44.8
8x2
2.1
1x2
2.1
1 [m]
[m], mass : 22.99 [t][t], power : 3.5
3 5 [kW]- Relay Satellite (Rstar): size : φ1 x 0.65[m], mass : 50 [kg]High GainAntenna- VLBI Satellite (Vstar): size : φ1 x 0.65[m], mass : 50 [kg]High Gain Antenna

Public Outreach:
H=460km, NHDTV
29 Oct