Queen's University Belfast students find Neptune's elusive Trojan asteroids

Queen's University Belfast students have discovered two new long-term stable Trojan asteroids orbiting Neptune's trailing region. The team analyzed data from the Vera C. Rubin Observatory, identifying two asteroids and a candidate as permanent members of Neptune's trailing Trojans. The discovery was made using the Rubin Observatory's sharp optics and rapid survey capabilities, which allowed the team to detect faint, distant objects in the southern sky. The findings are published in The Astrophysical Journal Letters, and the team includes researchers from multiple institutions.

The team was led by Dr. Meg Schwamb, who identified the objects by combining data from the Rubin Observatory's early test observations. The discovery highlights the potential of the Rubin Observatory's LSST survey to expand knowledge of the solar system's small bodies, including asteroids and comets. The trailing cloud of Neptune's Trojans has been elusive due to their location in a dense part of the sky that obscures their faint light. The discovery marks the first time that the trailing cloud has been observed in detail, and the Rubin Observatory's depth and coverage have enabled the team to double the number of known objects in this population.

The findings offer insight into the dynamics of the outer solar system and the distribution of small bodies. The discovery of these Trojans suggests that Neptune's trailing cloud is more extensive than previously thought, and the Rubin Observatory's continued survey will help scientists study the solar system's small bodies in greater detail. The results are expected to contribute to future research on the formation and evolution of the solar system, and the LSST survey will continue to provide new data on the cosmos.

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