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(24465) 2000 SX155: A NEW BINARY HUNGARIA.

Robert D Stephens¹, Brian D Warner²

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

The Minor Planet Bulletin

|May 27, 2020

Summary

This summary is machine-generated.

Astronomers discovered asteroid (24465) 2000 SX155 is a binary system. Its satellite has the shortest orbital period ever detected for an asteroid binary.

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Area of Science:

Astronomy and Astrophysics
Solar System Studies

Background:

Asteroid binaries are crucial for understanding solar system formation.
Previous studies have identified numerous asteroid binaries, but their orbital characteristics vary widely.

Purpose of the Study:

To investigate the physical and orbital properties of the Hungaria asteroid (24465) 2000 SX155.
To determine if the asteroid is part of a binary system and characterize its components.

Main Methods:

Conducted CCD photometry observations in October and November 2016.
Analyzed lightcurve data to identify rotational periods and binary orbital parameters.

Main Results:

Confirmed (24465) 2000 SX155 is a binary asteroid.
Determined the primary asteroid's lightcurve period to be 2.66087 ± 0.00005 hours.
Measured the satellite's orbital period at 9.252 ± 0.001 hours, the shortest observed to date.

Conclusions:

The discovery of this binary system provides new insights into asteroid dynamics.
The exceptionally short orbital period of the satellite challenges existing models of binary asteroid formation and evolution.