The Size Distribution of Near-Earth Objects Larger Than 10 m

David E Trilling, F. Valdes, L. Allen, D. James, C. Fuentes, D. Herrera, T. Axelrod, J. Rajagopal

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

We analyzed data from the first year of a survey for Near-Earth Objects (NEOs) that we are carrying out with the Dark Energy Camera (DECam) on the 4 m Blanco telescope at the Cerro Tololo Inter-American Observatory. We implanted synthetic NEOs into the data stream to derive our nightly detection efficiency as a function of magnitude and rate of motion. Using these measured efficiencies and the solar system absolute magnitudes derived by the Minor Planet Center for the 1377 measurements of 235 unique NEOs detected, we directly derive, for the first time from a single observational data set, the NEO size distribution from 1 km down to 10 m. We find that there are 106.6 NEOs larger than 10 m. This result implies a factor of 10 fewer small NEOs than some previous results, though our derived size distribution is in good agreement with several other estimates.

Original languageEnglish (US)
Article number170
JournalAstronomical Journal
Volume154
Issue number4
DOIs
StatePublished - Oct 1 2017

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near Earth objects
asteroids
dark energy
solar system
observatories
planet
observatory
cameras
telescopes
estimates
energy

Keywords

  • minor planets, asteroids: general
  • surveys

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Trilling, D. E., Valdes, F., Allen, L., James, D., Fuentes, C., Herrera, D., ... Rajagopal, J. (2017). The Size Distribution of Near-Earth Objects Larger Than 10 m. Astronomical Journal, 154(4), [170]. https://doi.org/10.3847/1538-3881/aa8036

The Size Distribution of Near-Earth Objects Larger Than 10 m. / Trilling, David E; Valdes, F.; Allen, L.; James, D.; Fuentes, C.; Herrera, D.; Axelrod, T.; Rajagopal, J.

In: Astronomical Journal, Vol. 154, No. 4, 170, 01.10.2017.

Research output: Contribution to journalArticle

Trilling, DE, Valdes, F, Allen, L, James, D, Fuentes, C, Herrera, D, Axelrod, T & Rajagopal, J 2017, 'The Size Distribution of Near-Earth Objects Larger Than 10 m', Astronomical Journal, vol. 154, no. 4, 170. https://doi.org/10.3847/1538-3881/aa8036
Trilling, David E ; Valdes, F. ; Allen, L. ; James, D. ; Fuentes, C. ; Herrera, D. ; Axelrod, T. ; Rajagopal, J. / The Size Distribution of Near-Earth Objects Larger Than 10 m. In: Astronomical Journal. 2017 ; Vol. 154, No. 4.
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