Pick up to 4 missions to compare side-by-side. State lives in the URL — share the link and the comparison loads exactly as you left it.
Six nations have placed lunar orbiters since 2007 — a 4× increase in 15 years.
| Attribute | 🇺🇸 Lunar Reconnaissance Orbiter (LRO)Active · Last updated 2026-06-01 Trust: Agency-primaryⓘ Last verified Remove × | 🇯🇵 SELENE (Kaguya) SELenological and ENgineering Explorer Trust: Agency-primaryⓘ Last verified Remove × | 🇺🇸 Clementine (DSPSE) Deep Space Program Science Experiment Trust: Agency-primaryⓘ Last verified Remove × |
|---|---|---|---|
| Agency | NASA | JAXA | USAF/NASA (BMDO) |
| Status | Active | Mission Complete | Mission Complete |
| Mission type | Orbiter | Orbiter | Orbiter |
| Launch date | 2009-06-18 | 2007-09-14 | 1994-01-25 |
| End date | Active | 2009-06-10 | 1994-07-20 |
| Orbit | Polar low lunar orbit ~50 km (average) | 100 km circular polar orbit (primary phase) | Polar elliptical orbit 425 × 2,942 km |
| Mass | 1,916 kgas of [1]Includes Diviner, LOLA, LROC, MiniRF, LAMP, LEND, CRaTER instruments | 2,855 kgas of [1]Main orbiter (2,230 kg) + Rstar relay sub-satellite (53 kg) + VRAD sub-satellite (52 kg) ↑ Heaviest | 424 kgas of [1] |
| Instruments | 7 instrumentsas of [1] | 15 instrumentsas of [1] ↑ Most instruments | 6 cameras + laser ranger + charged particle telescopeas of [1] |
| Key findings |
|
|
|
| Outcome | NASA's comprehensive lunar scout, now 16+ years in orbit. LRO has produced the most detailed maps of the lunar surface ever made, identified water-ice at the poles, and characterized the radiation environment for future crewed missions. Its LROC camera system imaged the Apollo landing sites, Chinese Chang'e landers, and recent commercial missions including IM-1 Odysseus. | JAXA's flagship lunar orbiter, second only to LRO in scientific output. SELENE performed a controlled impact on the lunar near-side in June 2009, with the impact flash confirmed by ground telescopes. Its terrain camera produced the most complete global DEM of the Moon prior to LOLA/LRO. | A USAF/NASA joint mission using miniaturized military sensor technology. Clementine produced the first global multispectral map of the Moon and provided the first indirect evidence for polar water-ice via bistatic radar. A computer malfunction during the planned asteroid flyby phase left it in an unusable orbit. |
All 11 lunar orbital missions with primary-source citations from NASA, ESA, JAXA, ISRO, CNSA, and NASA NSSDCA. Coverage spans Clementine (1994) through LRO (active 2026). Pure URL state — bookmark or share the link and the comparison reproduces exactly.