What would you weigh on WASP-39 b?
WASP-39 b’s surface gravity is 0.43× Earth’s, so you would weigh about 57% less than you weigh on Earth. It is a giant planet with no solid surface, so this is the pull you would feel at its cloud tops. WASP-39 b’s gravity is stronger than 2% of the known worlds in gravityfinder (a low bar to miss: most confirmed exoplanets are giants far heavier than Earth).
On WASP-39 b you would weigh
65.2 lb
For scale: the gentlest gravity of any world here is Charon at 0.03×, and the most crushing is Kepler-123 b at 6.40×.
Surface gravity computed by gravityfinder from WASP-39 b’s mass and radius (gravity = mass ÷ radius², with Earth = 1). Measured mass.