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5425 VOJTECH: A NEW BINARY VESTOID.

Robert D Stephens1, Brian D Warner2

  • 1Center for Solar System Studies (CS3) / MoreData!, 11355 Mount Johnson Ct., Rancho Cucamonga, CA 91737 USA.

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Observations revealed the Vestoid asteroid 5425 Vojtech to be a binary system. This discovery provides new insights into asteroid system dynamics and characteristics.

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Area of Science:

  • Asteroid science
  • Binary asteroid systems
  • Photometry

Background:

  • The Vestoid asteroid 5425 Vojtech was observed to investigate its physical properties.
  • Asteroid photometry is crucial for understanding their rotational characteristics and shapes.

Purpose of the Study:

  • To determine if asteroid 5425 Vojtech is a binary system.
  • To characterize the orbital and physical properties of the binary system.

Main Methods:

  • Conducted CCD photometry observations in October and November 2015.
  • Analyzed lightcurves to identify periodicity and amplitude variations.
  • Measured mutual event durations and magnitudes to estimate size ratios.

Main Results:

  • Asteroid 5425 Vojtech was confirmed as a binary system.
  • The primary asteroid exhibits a rotation period of 2.64759 ± 0.000004 hours.
  • The satellite's orbital period is 25.43 ± 0.02 hours.
  • The estimated diameter ratio (Ds/Dp) is ≥ 0.22 ± 0.02.

Conclusions:

  • The study successfully identified and characterized 5425 Vojtech as a binary asteroid.
  • The findings contribute to the understanding of asteroid system formation and evolution.