2007-039A
The ISAS Selenological and Engineering Explorer (SELENE) was the most ambitious lunar probe in a generation. It was named Kaguya after a Japanese mythological figure. The spacecraft was built by NEC Toshiba Space Systems. Launch mass 2779 or 2885 kg (COSPAR), 1720 kg dry A 113 kg prop reserve was quoted so in orbit mass was at least 1840 kg. Orbiter size 2.1 x 2.1 x 4.7m, shape was box + panel + 4 radar sounder booms + magnetometer mast.
The H2A 2022 launch vehocle was an H2A with 4S fairing and 2360SA PAF. It launched Kaguya into highly elliptical Earth orbit, where the probe's own propulsion was used to raise apogee to lunar distance and perform the lunar orbit insertion burn. Kaguya was captured into a 101 x 11741 km orbit and then performed burns to lower itself to a circular 100 km path. Two Toshiba relay satellites were carried, and were ejected during the orbit lowering process.
| Selene | |||
| Date | Time | Event | Orbit |
|---|---|---|---|
| 2007 Sep 14 | 0131:01 | Launch by H2A F13 | TNSC |
| T+0:10 SSB ignition | |||
| T+1:08 SSB burnout | |||
| T+1:30 SSB jettison | |||
| T+1:55 SRB-A burnout | |||
| T+2:05 SRB-A jettison | |||
| T+4:25 Fairing sep | |||
| T+6:40 MECO | |||
| T+6:48 Stage 1 sep | |||
| 0137:55 | T+6:54 SEIG 1 | ||
| 0143:08 | T+12:07 SECO-1 157E 25.5N? | 270 x 300 x 30.4? | |
| Equator crossing 149W 0 N | |||
| 0211:34 | T+40:33 H2A st 2 TLI SEIG2 104W 24S | ||
| 0215:03 | T+44:02 SECO-2 87W 28S | ||
| 2007 Sep 14 | 0216:33 | T+45:32 H2A st 2 sep | 281 x 232805 x 29.9 |
| 282 x 231910 x 30.0 (UN) | |||
| 1929 | Pass EL1:4 | ||
| Phasing orbits | |||
| 2007 Sep 14 | 2011:01 | DVc1 Injection error corr. | 956 x 232782 |
| 2007 Sep 15 | 2300s | DVa1 Control error burn | 924 x 232731 |
| 2007 Sep 18 | 2352s | DVp1 Period adjust maneuver | 1039 x 377809 |
| 2007 Sep 19 | 0100? | Possible stage 2 reentry after 1st orbit | |
| 2007 Sep 19 | 1959s | DVc2 Period error corr burn | 1055 x 379196 |
| 2007 Sep 29 | 0258 | DVp2 Period Adjustment | 2243 x 378132 |
| 2007 Oct 3 | 0308 | Enter L sphere | |
| 2007 Oct 3 | 2101:01s | LOI1 | |
| 101 x 11741 km (JAXA) | |||
| 2007 Oct 5 | 2301 | LOI2 | 108 x 5694 |
| 2007 Oct 6 | 2240 | LOI3 | 115 x 2399 |
| 2007 Oct 9 | 0036 | Rstar Relay satellite deploy | 100 x 2400 x 95 |
| 2007 Oct 10 | 0024 | LOI4 | 127 x 795 |
| 2007 Oct 12 | 0428 | 100 x 800 km Vstar deploy | |
| 2007 Oct 14? | LOI5 | 103 x 502 | |
| 2007 Oct 18? | LOI6 | 80 x 123 | |
| 2007 Oct 21 | 1027s | Begin science data | |
| Final orbit | 100 x 100 km x 95 | ||
| 2009 Jun 10 | 1740 | Deorbit 3m/s | |
| 1825 | Impact at 80.4E 65.5S | ||
Payload:
- Mission Module
- High Def TV Camera
- XRS X-ray spectrometer
- GRS Gamma spectrometer
- MI Multispectral imaging system, 20m res
- SP Spectral profiler, Visible and Near IR image spectrometer.
- TC Terrain Camera, Stereo topographic camera, 10m res
- LRS Radar sounder, 4 antennae each 15m, at 5 MHz 30m tip-tip
- LALT Laser altimeter res 800m, height res 5m.
- LMAG Magnetometer, 12m mast
- UPI Plasma imager
- CPS Charged particle spectrometer
