Asteroids - NeoWs

NeoWs

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:

links {…}
page  {…}
near_earth_objects
  0   {…}
  1   {…}
  2   {…}
  3   {…}
  4   {…}
  5   {…}
  6   {…}
  7   {…}
  8   {…}
  9   {…}
  10  {…}
  11  {…}
  12  {…}
  13  {…}
  14  {…}
  15  {…}
  16  {…}
  17  {…}
  18  {…}
  19  {…}

Harmonic Sonification

Mapping

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:

orbital_period       = sine wave frequency
absolute_magnitude_h = sine wave  amplitude

More info on the orbital parameters:

https://en.wikipedia.org/wiki/Orbital_period

https://en.wikipedia.org/wiki/Absolute_magnitude

The Result