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ASTEROID LIGHTCURVE ANALYSIS AT CS3-PALMER DIVIDE STATION: 2013 SEPTEMBER-DECEMBER.

Brian D Warner1

  • 1Center for Solar System Studies / MoreData! 446 Sycamore Ave., Eaton, CO 80615 USA.

The Minor Planet Bulletin
|June 18, 2020
PubMed
Summary
This summary is machine-generated.

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NEAR-EARTH ASTEROID LIGHTCURVE ANALYSIS AT THE CENTER FOR SOLAR SYSTEM STUDIES: 2019 JANUARY-APRIL.

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Astronomers observed 31 main-belt asteroids, focusing on the Hungaria group, to search for binary asteroid systems. Four asteroids show potential for being binary, with one exhibiting unusual orbital characteristics.

Area of Science:

  • * Asteroid science
  • * Observational astronomy
  • * Solar System studies

Background:

  • * Lightcurve observations are crucial for determining asteroid physical properties.
  • * The Hungaria asteroid group is a dynamically interesting population in the inner main belt.
  • * Previous observations sometimes indicate the need for follow-up studies to confirm or refine models.

Purpose of the Study:

  • * To obtain lightcurves for 31 main-belt asteroids.
  • * To identify potential binary asteroid candidates within the Hungaria group.
  • * To gather data for spin axis and shape modeling of asteroids.

Main Methods:

  • * Photometric observations using the Center for Solar System Studies-Palmer Divide Station (CS3-PDS).
  • * Data collection occurred from September through December 2013.

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  • * Analysis of lightcurve data to detect periodicity indicative of binary systems.

    • Main Results:

    • * Lightcurves were successfully obtained for 31 main-belt asteroids.
    • * Four asteroids (4440 Tchantches, 6602 Gilclark, 7173 Sepkoski, and (69406) 1995 SX48) are identified as possible or probable binary candidates.
    • * Asteroid (119744) 2001 YN42 may represent a rare binary system with complex, multi-periodicity.

    Conclusions:

    • * The study identified several potential binary asteroid candidates, contributing to the census of small body systems.
    • * The unusual lightcurve of (119744) 2001 YN42 warrants further investigation.
    • * Continued photometric monitoring is essential for understanding asteroid dynamics and formation.