How fast is that relative to...
I can only understand velocity in terms of a sheep in a vacuum. We talking 1 SIV, 0.5 SIV... what?
https://www.theregister.com/2007/08/24/vulture_central_standards/
Future spacecraft flying close to Enceladus may be able to detect amino acids, an essential class of organic compounds for life on Earth, in the explosive plumes erupting from the moon's surface, a new study suggests. Enceladus, the sixth-largest moon orbiting Saturn, is of particular interest to astronomers hunting for …
"velocity in terms of a sheep in a vacuum
Unfortunately the unit is misdefined according to recognised physics.
Speed of light (c) divided by wooldrag (Wd) + Welshmen (Wm), where wooldrag is a species-defined drag coefficient determined by the length and pliability of the fleece
In vacuum, there will be no wooldrag, so the only relevant parameters are speed of light and total mass (sum of M(sheep) and Mtot(Welshmen).