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1727 METTE: A NEW HUNGARIA BINARY.

Brian D Warner1, Robert D Stephens2

  • 1Palmer Divide Observatory, 17995 Bakers Farm Rd., Colorado Springs, CO 80908.

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

The Hungaria asteroid 1727 Mette is a binary system, with a primary rotation period of approximately 3 hours and a satellite orbital period of about 21 hours. This discovery adds to the known population of small binary asteroids.

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Area of Science:

  • Astronomy and astrophysics
  • Minor planets research
  • Asteroid dynamics

Background:

  • The Hungaria asteroid group represents a population of small bodies in the inner Solar System.
  • Understanding asteroid systems, particularly binary asteroids, is crucial for planetary formation and evolution studies.
  • Photometric observations are a key method for characterizing asteroid physical properties.

Purpose of the Study:

  • To analyze CCD photometric data of asteroid 1727 Mette.
  • To determine if asteroid 1727 Mette is a binary system.
  • To characterize the rotational and orbital properties of the binary system.

Main Methods:

  • Utilizing CCD photometric observations from January 2013.
  • Analyzing the lightcurve of asteroid 1727 Mette for periodicity and amplitude.
  • Investigating mutual events between the primary and satellite to determine size ratios.

Main Results:

  • Asteroid 1727 Mette exhibits a bimodal lightcurve, confirming it as a binary system.
  • The primary asteroid has a rotational period of 2.98109 ± 0.00007 hours and an amplitude of 0.33 ± 0.01 magnitudes.
  • The satellite's orbital period is 20.99 ± 0.02 hours, with a satellite-to-primary diameter ratio of 0.21 ± 0.02.

Conclusions:

  • Asteroid 1727 Mette is a binary asteroid with significant elongation of its primary.
  • The determined parameters contribute to the understanding of the small binary asteroid population.
  • Further observations could refine the physical characteristics of this binary system.