Apache Point Observatory Lunar Laser-ranging Operation (APOLLO) normal point data: 2006 through 2020

Normal point data from the Apache Point Observatory Lunar Laser-ranging Operation (APOLLO) covering the 15-year span from April 2006 through the end of 2020. APOLLO measures the earth-moon separation by recording the round-trip travel time of photons from the Apache Point Observatory to five retro-reflector arrays on the moon. The APOLLO data set, combined with the 50-year archive of measurements from other lunar laser ranging (LLR) stations, can be used to probe fundamental physics such as gravity and Lorentz symmetry, as well as properties of the moon itself. These normal points have a median nightly accuracy of 1.7mm, which is an order of magnitude better than other LLR stations. Data is provided in both the "JPL" format (.np) and the Consolidated Laser Ranging Data Format (.crd