dard

6 ms·

1. 1.▲
   by dard 2y ago

   Sorry, I know some of the ways measurements are taken for satellite orbits, but not who actually does them or how that information makes its way to JPL.
2. 2.▲
   by dard 2y ago

   SPICE itself is a C package with a number of wrappers in other languages. JPL use it, along with numerical integrator and orbit determination code to generate SPICE "kernels", IE: binary files. The Horizons API allow you to use th
3. 3.▲
   by dard 2y ago

   Im a developer for the upcoming space telescope NEO Surveyor (Near Earth Object Surveyor). I actually work quite a bit with a number of people on the team up at JPL, Horizons is the canonical source for ephemeris information. Another vita
4. 4.▲
   by dard 2y ago

   Here is a simulation I did in response to your comment, this is ~6 million impactors and their on sky velocity as they approach Earth. Dotted black line is our expected detectability limit, anything to the right of that is detectable. On sk
5. 5.▲
   by dard 2y ago

   I work on the NEO Surveyor space telescope, doing orbit simulations of asteroids/comets and predicting expected observations of objects like these. If you look: https://www.minorplanetcenter.net/db_search/show_obje
6. 6.▲
   by dard 2y ago

   I work on NEO Surveyor, I replied to the parent comment largely agreeing with you, however I wanted to mention that we do rely on apparent motion for determining if a source is moving (asteroid/comet). However IR is ideal for spotting
7. 7.▲
   by dard 2y ago

   I actually work on NEO Surveyor telescope (surveying for dangerous asteroids), writing the simulation code use to track expected performance. So simulating +20 million asteroids and what will be visible during the mission. Motion is how we
8. 8.▲
   by dard 3y ago

   Really exciting to see the pictures. I helped write code for a paper predicting the size of Dinkinesh a few weeks before the flyby. It's so small we had to overlay multiple images in order to even see it in IR. We did not expect a bina