Getting Planetary Science Data Dr. Eric E. Palmer Principal Investigator of the Asteroid/Dust Subnode of the PDS

Deployed to Saudi Arabia

Studying Asteroids ? Hard to find data ? ?

Lunar and Planetary Lab U of Az

Shape Models for OSIRIS-REx Archiving Asteroid/Dust Data Two Projects Shape Models for OSIRIS-REx Archiving Asteroid/Dust Data

My Goal: Help you understand how to get data from the PDS

Where does planetary data come from? Current missions Many missions actively support Citizen Science

Where does planetary data come from? Make your own data Backyard telescopes

Where does planetary data come from? Old data Missions and some ground-base observations

Planetary Data System Federation of nodes focused on different types of data Range from simple optical images to complex magnetic fields Primary Goal: Archive data The archive has matured over time with better searching and metadata as time has gone on Secondary Goal: Host the data Provide the data for access Started with physical images and print documents Eventually CDs/DVDs. Now downloads Host the data in usable format Provide tools to search through huge collections of data

PDS Nodes Node are generally set up by “Discipline” — meaning they focus on a category of data rather than a specific target Geoscience Imaging (Cartography) Atmosphere Planetary Plasma Interactions (solar wind, magnetosphere) Navigational & Ancillary Information (NAIF) Two are more “Target” specific Ring-Moon Systems Small Bodies

Challenges Lots of data Not always organized the way expected Difficult to find out who to talk to Contact any node Contact a node that appears to be relevant http://pds.nasa.gov Card by the PDS table in the lobby

Using PDS Search

Using PDS Search (cont)

Jupiter’s 4 largest moons Imaging and Cartography — Atmosphere — Saturn Uranus Neptune Rings and Moon Systems — Jupiter and Saturn’s rings Small moons that interact with the rings Small Bodies — Asteroids Comets Dust NAIF — Handles spacecraft telemetry to calculate spacecraft position and what it was pointing at when data was collected Geosciences — Mercury Venus Moon Mars Jupiter’s 4 largest moons Imaging and Cartography — A copy of every image (except for LRO) Topography of Moon and Mercury Geologic Map Planetary Plasma Interactions — Solar Wind Magnetosphere and fields

Things to Consider Almost every instrument was custom built to be optimized for the mission Data is complex Require careful calibration, processing and evaluation Data formats are frequently unique Standard “consumer” tools seldom work Documentation, if available, is usually technical

Things To Consider Most of the data is in large groups called Bundles or Collections Thus, require large downloads and effort to parse through the data to locate specific things As of right now, only “images” can be searched as a specific observation Nodes with image data have tools to search by latitude, longitude, pixel resolution, observational parameters, etc. Other data (spectra, dust count, magnetic fields, etc.) were not provided in a way that facilitates search Images are one of the most used data sets