Author

B. Holler

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Open access Sep 2026

Thermophysical characterization of the potentially hazardous near-Earth object 2024 YR4

The asteroid 2024 YR_4 is a potentially hazardous Apollo-type near-Earth object. Its highly eccentric orbit produces close Earth-Moon encounters roughly every 4 years. Based on the astrometry collected during the discovery apparition, the asteroid had a 4% probability of a lunar impact on 2032 December 22. A collection...

T. Müller, E. MacLennan, A. Burdanov et al. · Astronomy & Astrophysics · 0 citations

Preprint Oct 2026

Size, Shape, and Geometric Albedo of Dwarf Planet Quaoar's Largest Satellite Weywot

The small satellites of dwarf-planet size worlds in trans-Neptunian space are thought to be produced through giant impacts, and are typically observed to have bright water-ice-dominated surfaces. Here we focus on Quaoar's small primary satellite, Weywot. We build on previous work by re-analyzing the June 2023 stellar o...

Cameron Collyer, E. Fernández-Valenzuela, B. Proudfoot et al. · 0 citations

Preprint Sep 2026

The Dense, Rocky Core of Haumea Revealed by Satellite Dynamics

The icy dwarf planets in the outer solar system are among the most enigmatic bodies known, showing activity ranging from atmospheric resurfacing to possible cryovolcanism. Yet the study of their interiors remains largely theoretical, with few empirical measurements to guide our understanding. The orbits of their moons...

B. Proudfoot, D. Ragozzine, W. Grundy et al. · 0 citations