Multi-filter photometry of Solar System Objects from the SkyMapper Southern Survey

Abstract

Context. The populations of small bodies of the Solar System (asteroids, comets, Kuiper Belt objects) are used to constrain the origin and evolution of the Solar System. Both their orbital distribution and composition distribution are required to track the dynamical pathway from their regions of formation to their current locations. Aims. We aim at increasing the sample of Solar System objects (SSOs) that have multi-filter photometry and compositional taxonomy. Methods. We search for moving objects in the SkyMapper Southern Survey. We use the predicted SSO positions to extract photometry and astrometry from the SkyMapper frames. We then apply a suite of filters to clean the catalog for false-positive detections. We finally use the near-simultaneous photometry to assign a taxonomic class to objects. Results. We release a catalog of 880,528 individual observations, consisting of 205,515 known and unique SSOs. The catalog completeness is estimated to be about 97% down to V=18 mag and the purity to be above 95% for known SSOs. The near-simultaneous photometry provides either three, two, or a single color that we use to classify 117,356 SSOs with a scheme consistent with the widely used Bus-DeMeo taxonomy. Conclusions. The present catalog contributes significantly to the sample of asteroids with known surface properties (about 40% of main-belt asteroids down to an absolute magnitude of 16). We will release more observations of SSOs with future SkyMapper data releases.

arXiv comment15 pages, 22 figures, 13 tables

References in corpus (18)

• Gaia Data Release 2. Summary of the contents and survey properties
• Solar System evolution from compositional mapping of the asteroid belt
• Solar System Objects Observed in the SDSS Commissioning Data
• The taxonomic distribution of asteroids from multi-filter all-sky photometric surveys
• Compositional distributions and evolutionary processes for the near-Earth object population: Results from the MIT-Hawaii Near-Earth Object Spectroscopic Survey (MITHNEOS
• The colours of the Sun
• The Size Distributions of Asteroid Families in the SDSS Moving Object Catalog 4
• Aqueous alteration on main belt primitive asteroids: results from visible spectroscopy
• A spectroscopic survey of the small near-Earth asteroid population: peculiar taxonomic distribution and phase reddening
• Olivine-dominated A-type asteroids in the Main Belt: Distribution, Abundance and Relation to Families
• The Dynamical Evolution of the Asteroid Belt
• Asteroid phase curves from ATLAS dual-band photometry
• A million asteroid observations in the Sloan Digital Sky Survey
• Unexpected D-type Interlopers in the Inner Main Belt
• A record of the final phase of giant planet migration fossilized in the asteroid belt's orbital structure
• Prediction of transits of solar system objects in Kepler/K2 images: An extension of the Virtual Observatory service SkyBoT
• Color Variability of Asteroids in SDSS Moving Object Catalog
• Origins of colors variability among C-cluster main-belt asteroids

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