Shepherd Moons
Novelette 10,033 words Recommended by 2 award/anthology sources
"The mood in the control room was tense. When everything depends on the next hour or so, people grow quiet and focused. In a little less than an hour, the DART spacecraft would arrive at the asteroid Didymos, and all their effort would go out in a final blaze of glory. Priya Joshi and her partner in crime—and in practically everything else—Mark Anderson..."
Quasar links out; the story lives on Analog, where the author gets the click.