Nonextensive distributions of asteroid rotation periods and diameters

Details Nonextensive distributions of asteroid rotation periods and diameters Nonextensive distributions of asteroid rotation periods and diameters

Mar 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012a%26a...539a.158b&link_type=abstract

Astronomy & Astrophysics, Volume 539, id.A158

Astronomy and Astrophysics

Astrophysics

Minor Planets, Asteroids: General

Scientific paper

Context. We investigate the distribution of asteroid rotation periods from different regions of the solar system and diameter distributions of near-Earth asteroids (NEAs). Aims: We aim to verify if nonextensive statistics satisfactorily describes the data. Methods: Light curve data were taken from the Planetary Database System (PDS) with Rel ≥ 2. We also considered the taxonomic class and region of the solar system. Data of NEA were taken from the Minor Planet Center. Results: The rotation periods of asteroids follow a q-Gaussian with q = 2.6 regardless of taxonomy, diameter, or region of the solar system of the object. The distribution of rotation periods is influenced by observational bias. The diameters of NEAs are described by a q-exponential with q = 1.3. According to this distribution, there are expected to be 994 ± 30 NEAs with diameters greater than 1 km.

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