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To support exploratory analysis of these low lunar, long-lifetime trajectories in a high-fidelity dynamical model, this paper uses a clustering-based approach. First, low lunar trajectories are numerically generated from coarsely sampled initial conditions for up to 180 days in a 100\n                    <jats:inline-formula>\n                      <jats:alternatives>\n                        <jats:tex-math>$$\\times $$<\/jats:tex-math>\n                        <mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\">\n                          <mml:mo>\u00d7<\/mml:mo>\n                        <\/mml:math>\n                      <\/jats:alternatives>\n                    <\/jats:inline-formula>\n                    100 lunar gravity model along with the point mass gravity of the Earth and Sun. Each trajectory is represented by a subset of its perilunes in a Moon-fixed frame. Distributed trajectory clustering is then used to group trajectories with a similar evolution of eccentricity and argument of perilune, regardless of their initial phasing. From selected global clusters, trajectories with a low level of drift in their evolution of perilune over 180 days and geometrically distinct perilune groundtracks are isolated as long-lifetime orbits. Sets of geometrically similar long-lifetime orbits are presented, analyzed, and then coarsely compared to analytically derived frozen orbit predictions from the existing literature.\n                  <\/jats:p>","DOI":"10.1007\/s10569-026-10334-x","type":"journal-article","created":{"date-parts":[[2026,10,4]],"date-time":"2026-10-04T07:45:23Z","timestamp":1791099923000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Numerical exploration of low lunar, long-lifetime orbits"],"prefix":"10.1007","volume":"138","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-7821-9171","authenticated-orcid":false,"given":"Natasha","family":"Bosanac","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Giuliana E.","family":"Miceli","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2026,10,4]]},"reference":[{"key":"10334_CR1","doi-asserted-by":"publisher","unstructured":"Acton, C.H.: Ancillary data services of NASA\u2019s Navigation and Ancillary Information Facility. 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