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A TRIO OF BINARY ASTEROIDS.

Brian D Warner1, Robert D Stephens2, Alan W Harris3

  • 1Center for Solar System Studies - Palmer Divide Station, 446 Sycamore Ave., Eaton, CO 80615 USA.

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|May 28, 2020
PubMed
Summary
This summary is machine-generated.

Observations of asteroids 1727 Mette, 68063 2000 YJ66, and 2014 PL51 were conducted. The study estimated the spin axis of 1727 Mette and analyzed the spin periods of two near-Earth asteroids.

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Area of Science:

  • Asteroid science
  • Observational astronomy
  • Solar System studies

Background:

  • Asteroid 1727 Mette is a known binary system.
  • Near-Earth asteroids (NEAs) like 68063 2000 YJ66 and 2014 PL51 are of particular interest due to their proximity and potential for study.
  • Understanding asteroid rotation and binary systems is crucial for solar system formation models.

Purpose of the Study:

  • To observe and analyze the physical characteristics of three asteroids: 1727 Mette, 68063 2000 YJ66, and 2014 PL51.
  • To estimate the spin axis orientation of asteroid 1727 Mette.
  • To investigate the rotational properties and potential binary nature of the observed NEAs.

Main Methods:

  • Charge-Coupled Device (CCD) observations were performed at the Center for Solar System Studies.
  • Photometric data was analyzed to determine lightcurve properties and periods.
  • Absence of satellite detection for 1727 Mette was used to constrain its spin axis.

Main Results:

  • No evidence of a satellite was found for 1727 Mette in 2014, allowing for an estimate of its spin axis orientation.
  • Asteroid 68063 2000 YJ66 exhibits a primary spin period close to the theoretical spin barrier of 2.2 hours.
  • Asteroid 2014 PL51 displays characteristics of a wide binary candidate, with complex lightcurve variations.

Conclusions:

  • The study provides valuable data on the spin dynamics and potential multiplicity of asteroids.
  • The findings contribute to our understanding of asteroid populations, particularly NEAs.
  • Further observations are warranted to confirm the binary nature of 2014 PL51 and refine spin axis estimates.