The title pretty much summarizes the question.

Weirdly, googling „dawn spaceprobe burn time“ and similar things didn‘t turn up anything useful (at least for me), so I was wondering if maybe someone here knows how long dawn‘s xenon reserves lasted?


1 Answer 1


Never mind, it‘s 51,385 hours (wow!)

From NASA's Dawn by the Numbers:

Source: NASA/Jet Propulsion Laboratory-Caltech

Published: November 15, 2018

NASA's Dawn mission by the numbers:

  • 51,385 hours of ion engine thrusting.

  • 172 GB of science data collected.

  • 3,052 orbits around Vesta and Ceres

  • 100,000 images taken.

  • 4.3+ billion miles (6.9+ billion kilometers) traveled since launch.

  • 367+ million miles (591+ million kilometers): Farthest distance from Earth.

Read More

  • $\begingroup$ What's the source of this info? $\endgroup$ Feb 24, 2021 at 17:19
  • $\begingroup$ @OrangeDurito NASA: solarsystem.nasa.gov/resources/2168/dawn-by-the-numbers $\endgroup$
    – Jake
    Feb 24, 2021 at 17:43
  • $\begingroup$ @OrangeDurito although I did make a possibly confusing typo $\endgroup$
    – Jake
    Feb 24, 2021 at 17:51
  • 1
    $\begingroup$ @Jake It's always okay to answer your own question n SE, but it's important to make it a good quality answer, so I've move your link back into your post where it belongs, and included a block quote of the numbers so if the link rots the information is still available in the answer, thereby preventing it from being a link-only answer. $\endgroup$
    – uhoh
    Feb 24, 2021 at 23:38

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