At https://api.nasa.gov/, the NASA offers various APIs. This example uses data from the 'Asteroids - NeoWs' RESTful web service, which contains data of near earth Asteroids.
JSON Data Structure
The JSON data is arraned as an array, featuring the data on 20 celestial bodies, accessible via index:
All entries of the individual Asteroids can be used as synthesis parameters in a sonification system with Web Audio. This example uses two parameters of the Asteroids within an additive synthesis paradigm:
More info on the orbital parameters: