The discovery and characterization of a kilometre sized asteroid inside the orbit of Venus

Abstract

Near-Earth asteroid population models predict the existence of bodies located inside the orbit of Venus. Despite searches up to the end of 2019, none had been found. We report discovery and follow-up observations of (594913) 'Ayló'chaxnim, an asteroid with an orbit entirely interior to Venus. (594913) 'Ayló'chaxnim has an aphelion distance of ~0.65 au, is ~2 km in diameter and is red in colour. The detection of such a large asteroid inside the orbit of Venus is surprising given their rarity according to near-Earth asteroid population models. As the first officially numbered and named asteroid located entirely within the orbit of Venus, we propose that the class of interior to Venus asteroids be referred to as 'Ayló'chaxnim asteroids.

arXiv comment7 pages, 8 figures, 1 table. Published in Monthly Notices of the Royal Astronomical Society: Letters (2022). arXiv admin note: text overlap with arXiv:2009.04125

References in corpus (25)

• Gaia Data Release 2. Summary of the contents and survey properties
• The Gaia mission
• The Zwicky Transient Facility: System Overview, Performance, and First Results
• The Zwicky Transient Facility: Data Processing, Products, and Archive
• REBOUND: An open-source multi-purpose N-body code for collisional dynamics
• The Pan-STARRS1 Photometric System
• The Zwicky Transient Facility: Science Objectives
• IAS15: A fast, adaptive, high-order integrator for gravitational dynamics, accurate to machine precision over a billion orbits
• The taxonomic distribution of asteroids from multi-filter all-sky photometric surveys
• The Zwicky Transient Facility: Surveys and Scheduler
• The Zwicky Transient Facility: Observing System
• Debiased orbit and absolute-magnitude distributions for near-Earth objects
• Fully-Automated Reduction of Longslit Spectroscopy with the Low Resolution Imaging Spectrometer at Keck Observatory
• Optimization of the Observing Cadence for the Rubin Observatory Legacy Survey of Space and Time: a pioneering process of community-focused experimental design
• Absolute magnitudes and slope parameters for 250,000 asteroids observed by Pan-STARRS PS1 - preliminary results
• Asteroid taxonomic signatures from photometric phase curves
• DeepStreaks: identifying fast-moving objects in the Zwicky Transient Facility data with deep learning
• Debiased albedo distribution for Near Earth Objects
• Yarkovsky V-shape identification of asteroid families
• A Twilight Search for Atiras, Vatiras and Co-orbital Asteroids: Preliminary Results
• The discovery and characterization of a kilometre sized asteroid inside the orbit of Venus
• The Kitt Peak Electron Multiplying CCD demonstrator
• Orbital Dynamics of 2020 AV2: the First Vatira Asteroid
• On the orbital evolution of 2020 AV2, the first asteroid ever observed to go around the Sun inside the orbit of Venus
• Physical characterization of 2020 AV2, the first known asteroid orbiting inside Venus orbit

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