{"signature":{"source":"NASA/JPL Horizons API","version":"1.2"},"result":"*******************************************************************************\n Revised: Sep 10, 2025    Lunar Trailblazer (spacecraft) / (Sun)           -242\n                       https://trailblazer.caltech.edu/index.html             \n     https://www.jpl.nasa.gov/news/nasas-lunar-trailblazer-moon-mission-ends/\n\nNOTE:\n 2025-Jul-31: The mission was formally ended, contact not being re-established.\n              Ground radar, optical telescopic data, and limited initial data \n              from the s/c indicated the spacecraft's solar arrays were not \n              properly oriented toward the Sun, which caused its batteries to \n              become depleted.\n 2025-Mar-24: An approximate asteroid magnitude model has been added,\n              H= 31.0, G= 0.15\n 2025-Mar-09: The spacecraft has not been in contact with ground controllers \n              since shortly after launch. Recovery attempts are underway.\n\n MISSION LAUNCH DATE:                            MOON ARRIVAL DATE:\n  2025-Feb-27 00:16:32 UTC                       4-7 months after launch\n\n LAUNCH VEHICLE:\n  SpaceX Falcon 9  \n  Launch Complex 39A, Kennedy Space Center\n\n BACKGROUND:\n  Lunar Trailblazer was a NASA mission to understand the form, abundance, and \n  distribution of water on the Moon, and the lunar water cycle:\n\n   * Determine the form and abundance of water on the sunlit side of the Moon\n   * Measure how the distribution of water changes across the lunar surface \n      over time\n   * Determine the form and abundance of ice inside permanently shadowed \n      craters --  locations that do not receive direct sunlight\n   * Develop high-resolution temperature maps of the lunar surface and study \n      how temperature affects the distribution of water\n   * Improve understanding of water cycles on airless bodies in the solar \n      system\n\n  After launch, a 4-7 month cruise phase to a lunar polar orbit ~100 km \n  over the Moon's surface was planned, with two trajectory correction\n  maneuvers before a lunar flyby March 3. A second lunar flyby was planned \n  for May 8, before entering lunar orbit July 7.\n\n  Over the following ~1.5 years, it was to orbit the Moon 12 times a day for \n  the science mission phase.\n\n SPACECRAFT PHYSICAL PROPERTIES:\n   Total mass: 200 kg\n   3.5 meters wide with two solar panels deployed\n\n INSTRUMENTS:\n  High-resolution Volatiles and Minerals Moon Mapper (HVM3, a shortwave \n   infrared imaging spetrometer)\n  Lunar Thermal Mapper (LTM, mid-imfrared imager)\n\n SPACECRAFT TRAJECTORY: \n  Final post-launch reconstruction from navigation (JPL). A fit to tracking, \n  optical and radar astrometry through April 10, predicts thereafter. \n\n  Includes 24 hours of 2 way radiometric data post launch, and radar and \n  optical astrometric observations between Mar 1 to Apr 10 2025. No maneuvers\n  were performed.\n \n Trajectory files                                    Start (TDB)   Stop (TDB)\n -------------------------------------------------   -----------   -----------\n ltb_trj_od007v1                                     2025-Feb-27   2051-Jan-01\n*******************************************************************************\n"}