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2012 QG42: A SLOW ROTATOR NEA
Brian D Warner1, Ronald E Baker2, Przemyslaw Bartczak3
1Palmer Divide Observatory, 17995 Bakers Farm Rd., Colorado Springs, CO 80908.
The Minor Planet Bulletin
|May 28, 2020
Summary
Near-Earth asteroid 2012 QG42 is a slow rotator. Photometric observations determined its synodic rotation period to be 24.22 hours, with a lightcurve amplitude of 1.18 magnitudes.
Area of Science:
- Astronomy and Astrophysics
- Planetary Science
Background:
- Near-Earth asteroids (NEAs) pose potential impact risks.
- Understanding NEA rotational dynamics is crucial for threat assessment and mission planning.
Purpose of the Study:
- To determine the rotational period and lightcurve amplitude of NEA 2012 QG42.
- To characterize the physical properties of this specific NEA.
Main Methods:
- Conducted CCD photometric observations of asteroid 2012 QG42.
- Analyzed a two-week data set to derive the synodic rotation period.
- Measured the lightcurve amplitude.
Main Results:
- Asteroid 2012 QG42 exhibits slow rotation.
- The synodic period was determined to be 24.22 ± 0.01 hours.
- The lightcurve amplitude was measured at 1.18 ± 0.03 magnitudes.
Conclusions:
- NEA 2012 QG42 is confirmed as a slow rotator.
- The obtained parameters contribute to the growing database of NEA physical characteristics.
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