Before revision: Name and modelUsed on (# of RTGs per user) Maximum outputRadio-isotopeMax fuelused (kg)Mass (kg)Power/ mass (Electrical W/kg) Electrical (W) Heat (W)MMRTG MSL/Curiosity rover and Perseverance/Mars 2020 rover c. 110 c. 2,000 238Pu c. 4 <45 2.4 GPHS-RTG Cassini (3), New Horizons (1), Galileo (2), Ulysses (1) 300 4,400 238Pu 7.8 55.9–57.8 5.2– 5.4 MHW-RTG LES-8/9, Voyager 1 (3), Voyager 2 (3) 160 2,400 238Pu c. 4.5 37.7 4.2 SNAP-3B Transit-4A (1) 2.7 52.5 238Pu ?
After revision: Name and modelUsed on (# of RTGs per user) Maximum outputRadio-isotopeMax fuelused (kg)Mass (kg)Power/ totalmass( W/kg) Electrical (W) Heat (W)MMRTG MSL/Curiosity rover and Perseverance/Mars 2020 rover c. 110 c. 2,000 238Pu c. 4 <45 2.4 c. 30GPHS-RTG Cassini (3), New Horizons (1), Galileo (2), Ulysses (1) 300 4,400 238Pu 7.8 55.9–57.8 5.2– 5.438 MHW-RTG LES-8/9, Voyager 1 (3), Voyager 2 (3) 160 2,400 238Pu c. 4.5 37.7 4.2 c. 36SNAP-3BPower/fuelmass (W/kg) Transit-4A (1) 2.7 52.5 238Pu ?