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Scattering And Absorption of Light in Planetary Regoliths

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Published on: July 1, 2019

(27568) 2000 PT6: A NEW HUNGARIA BINARY.

Brian D Warner¹, Robert D Stephens²

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

The Minor Planet Bulletin

|May 28, 2020

Summary

This summary is machine-generated.

The Hungaria asteroid (27568) 2000 PT6 is a binary system. Its satellite, detected via lightcurve analysis, has an irregular shape and may be tidally locked.

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Area of Science:

Astronomy and astrophysics
Planetary science

Background:

Asteroid (27568) 2000 PT6 belongs to the Hungaria group, a population of near-Earth asteroids.
Previous studies in 2011 provided initial characterization, necessitating further investigation.

Purpose of the Study:

To analyze CCD photometric observations of asteroid (27568) 2000 PT6.
To determine the system's characteristics and identify potential satellite presence.
To revise previous findings based on new data.

Main Methods:

Photometric observation using CCD detectors.
Analysis of lightcurves to identify periodic variations.
Fourier analysis to determine dominant periods.

Main Results:

The primary asteroid exhibits a rotation period of 3.4885 ± 0.0002 hours.
A significant secondary period of 16.356 ± 0.003 hours was detected, indicating a satellite.
The secondary lightcurve suggests a bimodal shape, implying an elongated or irregular satellite potentially in a tidally locked state.

Conclusions:

Asteroid (27568) 2000 PT6 is confirmed to be a binary system.
The satellite's characteristics suggest tidal locking and an irregular shape.
The discovery necessitates a revision of prior orbital and physical parameter estimations from 2011.