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osirisRex.md

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Overview

  • What is OSIRIS-REx and where is it going?
    • Origins, Spectral Interpretation, Resource Identification, and Security-Regolith Explorer
  • Why? What is the scientific goal?
  • Why this particular asteroid?
    • Easy to reach
    • or scientifically especially interesting.
  • What sensors does the spacecraft have for the science?
  • What's new? What will OSIRIS-REx do that's never been done before?
  • When did it launch? How long do we expect the trip to be?
  • The spacecraft itself
    • sizes, weights
    • bus systems (not scientific)
    • Electronics, Processors, Software, Languages.

How to get there - and back

  • Trajectory overview.
  • Slingshot. Explain.
  • What is the required precision wrt. to timing, locations, etc. to make such a slingshot work?
  • Can a slingshot change the orbital plane/inclination?
    • Bennu is six degrees off ...
    • I thought one can only boost "in plane"?
  • How have previous missions helped NASA perfect the art of the gravity assist?
  • Which kinds of trajectory-altering burns are necessary
  • How do you monitor, control, the trajectory?
  • Longer "sleep" phases?
  • What kind of propulsion? Chemical vs. Electric?

Redezvous/Landing

  • More like a "docking" as in Rosetta? Or real "landing"?

    • What is the gravitational situation like?
    • How does it "anchor" itself to the asteroid?
  • How do you technically grab the sample?

    • Drill?

Sample Return

  • Why not do the science there?

    • is it easier to get material back vs.
    • bringing the lab there for in-situ analysis?
  • What kind of science do we hope to gain from studying Bennu, especially with samples here on Earth?

  • How do you determine when and where to get the sample from Bennu?

  • How to get back?

    • "Reverse" the trajectory to get there feasible?
    • How long will it stay? The asteroid will have moved on wrt. earth at the time of return. Different trajectory?
  • When back? arrive at Earth in 2023.

Other science

  • map the asteroid in exquisite detail
  • study its orbit and interior
  • coincidental? Pictures of Jupiter.

Notes

LBT "sees" OsirisRex: https://www.nasa.gov/image-feature/goddard/2017/large-binocular-telescope-snags-first-glimpse-of-osiris-rex