A Comprehensive Network for the Discovery and Characterization of Interstellar Objects
Oem Trivedi, Abraham Loeb
TL;DR
The paper identifies four structural limitations in current interstellar object astronomy—cadence/visibility, photometric/astrometric degeneracies, ambiguous non-gravitational accelerations, and lack of rapid high-resolution follow-up—and introduces the Comprehensive InterStellar Objects Network (CISON) as an end-to-end solution. CISON integrates dual-hemisphere wide-field discovery, a lunar-based interferometer for diffraction-limited, km-scale imaging, and selective interceptor missions, all governed by a predictive Loeb Scale framework. A hypothetical case study (ISO 100I/X) demonstrates that earlier detection and lunar-resolution imaging can dramatically reduce parameter uncertainties (by factors up to 10^2–10^3 for certain parameters) and accelerate risk assessment and decision-making. The approach reframes ISO science as a proactive, information-rich discipline, embeds ISO imaging in lunar infrastructure, and provides a scalable template for tackling new astronomical frontiers with societal relevance such as planetary defense and technosignature searches.
Abstract
Interstellar object (ISO) astronomy has rapidly emerged over the past decade as a new frontier in planetary astrophysics, yet current observations remain limited by short visibility windows, inference degeneracies and fragmented follow-up capabilities. We argue that these constraints are structural rather than incidental and motivate a coordinated, end-to-end observational strategy for future ISO studies. We propose the Comprehensive ISO Network (CISON) which combines dual hemisphere wide-field discovery with rapid high resolution characterization and selective escalation to interceptor missions. By coupling this architecture to the differential formulation of the Loeb Scale, ISO classification and risk assessment become predictive rather than reactive. This framework transforms ISO astronomy into a mature, scalable discipline capable of maximizing scientific return and informing planetary defense in the coming decades.
