# Presentation: 353476

## SELENE (KAGUYA)

***SELENE ******(******KAGUYA)***

**Y.TAKIZAWA**
**Japan Aerospace Exploration Agency (JAXA)**

**SELENE configuration in lunar orbit**

## Objectives 

**Objectives**** **

_**Global survey of the Moon**_
**To research the origin and evolution of the Moon by observing the distribution**
**of the elements and minerals on the surface, the structure of the surface **
**and subsurface, the gravity field, the remnant of the magnetic field **
_**Data Application to Future Moon Utilization**_
**To be used for human activities on the Moon and the possibility of **
**future utilization of the Moon**
_**Technology development for the lunar exploration**_
**Technologies such as orbit control, attitude control, thermal control on lunar**
**orbit to be developed**
_**Public Outreach**_
**To make a public outreach by taking the movies of the beautiful Earth Rising**
** ****using its onboard High Definition Television System**

## KAGUYA Characteristics

**KAGUYA Characteristics**

**Main Satellite****:****KAGUYA**
**  ****Mass****:   ****About 3****ton(****At launch****)**
**         (****including  daughter satellite50kg×2****)**
**  ****Dimension****: ****About 2.1m×2.1m×4.8****m              **
**  ****Attitude control**** ****3axis Control**
**  ****Power Generation****:    ****About 3.5 kW (MAX)**
**  ****Mission Period****:  ****About ****1****Year**
**  ****Orbit****:  ****100km Altitude ****/****Inclination 90deg.**
**Daughter Satellites**
** ****Rstar(Relay satellite):OKINA**
**  ****Vstar(VLBI Radio satellite):OUNA**
-   **Mass****:       ****About 50kg**
**  ****Dimension****: 約****0.99m×0.99m×0.65****m **
**             ( ****Octagonal column shape**** ****)**
**  ****Attitude Control****: ****Spin Stabilization**
**  ****Power Generation****:    ****About 70W**
**  ****Mission Period****: ****About ****1****Year**
**  ****Orbit****(****At Separation****):    **
**    ****(Relay Sat.****:****OKINA)**** ****100km×2400km**
**    ****(VRAD Sat.: OUNA)****: ****100km****×**** ****800km**

**On orbit Configuration**

**VRAD: **_**V**_**LBI **_**RAD**_**io source**
**VLBI:   **_**V**_**ery **_**L**_**ong **_**B**_**aseline **_**I**_**nterferometry  **

**Daughter**
**Satellite**

**Daughter**
**Satellite**

**High Gain Antenna**

**Solar Paddle**

**15m Lunar Radar**
**Sounder Antenna**

**Main**
**Satellite**

**12m Magnetometer**
**Must **

## SELENE Science Instrument Summary

| X-ray Spectrometer (XRS) | Global mapping of Al, Si, Mg, Fe distribution using 100 cm2 CCD, spatial resolution 20 km, Energy range 0.7-8 keV, 5μm Be film, Solar X-ray monitor |
| --- | --- |
| 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, frequency 5 MHz, echo observation range 5 km, 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 1 Hz, 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/q |
| Radio 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 VIS |

## Flight model 

**Flight model **

**High Definition TV Camera**

**Gamma-ray**
**Spectrometer**

**X-ray Spectrometer**

**CPS**

**Tarrain**** Camera**
**Multi-band Imager**

**High Gain Antenna**

**Plasma Imager**

**PACE**

**Star Tracker**

**Solar paddle**

**PACE**

**Main ****engine**

**Omni Antenna**

**Thermal Radiator**

**Thrusters**

**Bus sub-system**

**Mission instrument**

**Laser Altimeter**

**nadir**

**Spectral-profiler**

**Relay**
**Satellite**

**VRAD Satellite**

## Wish Upon the moon campaign

**Wish Upon the moon campaign**

**2006, Dec.1****~****2007, Feb.28**
**412,627person’s name and messages**
** ****(Domestic****:****234,498,**** ****Foreign****:****178,129)**

**Sheet size**** ****280mmx160mm**
**Character size: 70μm**

**Name sheets on KAGUYA**

## Road to the Moon by KAGUYA

## Terrain Camera

| Spatial resolution
Field of View
Numbers of kamera
wavelength | 10m  (@altitude 100km)
22.4°
2  (Stereo)
430 – 850 nm |
| --- | --- |

## First light (Nov. 3, 2007)

**http://www.lpi.usra.edu/resources/mapcatalog**

**South latitude 80deg.**
**East longitude 90deg.**

**South latitude 80deg.**
**East longitude 270deg.**

**8km**

**KAGUYA**** ****Flight Direction**

**4km**

**2km**

**・****First light point****(****★****)**
**・****Rear side****、****About 30km from the South pole**
** (****South latitude ****89****deg. ****、****East longitude ****240****deg.****)。**

**South latitude 80deg.**
**East longitude 0deg.**

**South latitude 80deg.**
**East longitude 180deg.**

**KAGUYA flight**
**direction**

## 1km

**1km**

**Tc views the samller-sized craters(10m order) and the minute structure of a crater**

**Clementine HiRes(high resolution) Camera **
**(****Clementine digital Image model CD-CL_6022 version 1****)**

**Terrain Camera**

**Comparison between the KAGUYA TC image and the Clementine HiRes. image**

## Stereo terrain image by TC

**North pole**

**Northern semisphere**** **
**Far side**

**・****Date****:****2007,Sep 3**
**・****Location****: ****East longitude**** ****240deg. **
**                   ****North latitude 60****~****66deg.**** **
**(****Far side, Near ****DYSON ****crater****)**
**(****Lunar global image by Clementine/UVVIS****)**

**DYSON**

**Stereo terrain image by TC**

**Stereo image composed by TC 10m resolution stereo data**

**DYSON**

**DYSON**

## KAGUYA –LRO cooperation 

**KAGUYA –LRO cooperation**
**DSN(JPL) tracking support during critical phase and at an eclipse**
**Cooperated 4-way doppler data analysis, 4-way doppler data and laser altimeter data to be supplied to NASA for mission planning**
**KAGUYA homepage**
**http://www.kaguya.jaxa.jp**