THOR needs to increase its unit test coverage especially as we start deploying the code on different projects.

A clean and simple example of 'discovering' known asteroids can be worked into a series of integration tests.

Proposed plan (which may warrant separate issues):

• Extract several known asteroids from the MPC catalogue (using astroquery)
• Generate observations using already build in propagation code (these observations should ideally come from different observatories to enhance testing the heliocentric linking)
• Define test orbit as original input orbits and do clustering with small radius and small velocity grid
• Run initial orbit determination and see if we can recover input orbits
• Fail if the initial orbit is sufficiently far from input orbit