Miller lugs the bomb around Eros and even complains "I didn't know it loved gravity so much." But there is no gravity to speak of! Miller needs to wear mag boots in order to not float away into space precisely because the actual gravity of Eros and any other asteroid, even the much bigger Ceres, is much much too low to keep anything safely on the surface. In the Expanse universe, the artificial gravity inside the asteroids is created by spinning them, so things on the inside of asteroid stations are actually "falling" toward the "ceiling". And even that is only a third of Earth's gravity so Miller should have a much easier time carrying the bomb even inside Eros.
The velocity readout for Eros station is displayed as meters per second, when it should be kilometers per second. Specifically it says that Eros is traveling at a velocity of 27,800 m/s, at that speed it would take Eros approximately 130 days to make the roughly 315,000,000 kilometer trip to Earth. Whereas traveling at a velocity of 27,800 km/s would only take a little over three hours to reach Earth.
-=CORRECTION=- Meters per second is the correct unit, and even at 130 days Earth recognises it is not enough time to evacuate people or protect the planet. This is covered in both the original book sources, and in the podcast "Ty & That Guy" with author and episode writer and director Ty Frank.
-=CORRECTION=- Meters per second is the correct unit, and even at 130 days Earth recognises it is not enough time to evacuate people or protect the planet. This is covered in both the original book sources, and in the podcast "Ty & That Guy" with author and episode writer and director Ty Frank.