This paper provides a detailed mission analysis and systems design of a near-term and far-term pole-sitter mission. The pole-sitter concept was previously in-troduced as a solution to the poor temporal resolution of polar observations from highly inclined, low Earth orbits and the poor high latitude coverage from geo-stationary orbit. It considers a spacecraft that is continuously above either the North or South Pole and, as such, can provide real-time, continuous and hemi-spherical coverage of the polar regions. Being on a non-Keplerian orbit, a con-tinuous thrust is required to maintain the pole-sitter position. For this, two dif-ferent propulsion strategies are proposed, which result in a near-term pole-sitter mission using solar electri...