Cannot find the value that sets the speed of asteroids spawning from another asteroid's death.

[Zanthra]

I cannot find the values that change the speed of the asteroids spawned when a larger asteroid dies. I found the dying trigger:

https://lua-api.factorio.com/latest/typ ... tItem.html

defined here:

https://github.com/wube/factorio-data/b ... d.lua#L266

but it does not include the speed of the resulting entities. If anyone knows how to change those speeds, it would be very much appreciated.