The press release (as well as product sheet of the Carbonite line that this is based on) say 5-7 years. Resistor jet thrust and specific impulse is heavily inf

The press release (as well as product sheet of the Carbonite line that this is based on) say 5-7 years. Resistor jet thrust and specific impulse is heavily influenced by how much electric power you supply. We don't know what performance specs for this satellite is, but we can estimate using modules from this other company as a stand in - their PBR-50 seems to be about the right size for Tyche (100-200kg class). https://pale-blue.co.jp/product/pbr-50/ https://pale-blue.co.jp/product/pbr-50/ and it claims 70s of specific impulse. Using the 160kg mass from the BBC article and 10kg of water as propellant, you'd get a delta-v of about 45.