Numeric ring-reconstructions based on massifs favor a non-oblique south pole-Aitken-forming impact event

• Published in: Earth and planetary science letters Vol. 650; p. 119123
• Main Authors: Bernhardt, Hannes, Walsh, Jessica M., Schröder, Leon M., Clark, Jaclyn D., Henriksen, Megan R., Edwards, Christopher S.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 15.01.2025
• Subjects: Artemis exploration zone; Moon; Pytorch; South pole-Aitken; Pytorch; Artemis exploration zone; Moon; South pole-Aitken

•Three numeric fits of 201 massifs we identify as likely SPA-ring remnants.•Different fit variants all give outer and inner ellipses with ellipticities ≤ 1.06.•Near-circular SPA would have required impact at non-oblique angle of well over 44°.•≤20% increased impact melt volume, excavation depth, and...