Preliminary Result of the Occultation by (3200) Phaethon as Observed at Ballarat, California
Abstract
Near-Earth asteroid (3200) Phaethon is the primary target for the Demonstration and Experiment of Space Technology for INterplanetary voYage, Phaethon fLyby and dUst Science Phaethon fLyby with reUSable probe (DESTINY+) mission, currently being developed by the Japan Aerospace Exploration Agency (JAXA). The size of Phaethon is measured to be about 5–6 km, although numbers derived by different techniques are not in strict agreement: radar measurement suggests an sphere with a diameter of 6.2 km, or a top-shaped figure with equivalent spherical diameter of 5.5 km (Taylor et al. 2019), while two thermophysical models based on infrared data suggest a spherical diameter of 5.1 ± 0.2 km (Hanuš et al. 2016) and 4.6^(+0.2)_(-0.3) km (Masiero et al. 2019), ≳2σ different from radar data.
Additional Information
© 2019 The American Astronomical Society. Received 2019 November 26; Accepted 2019 December 11; Published 2019 December 12. We thank SwRI for the prediction, as well as H. Pavlov for helpful discussion on the basics of occultation observation. This research used equipment of the Cahill Rooftop Observatory, managed and funded by Department of Astronomy, California Institute of Technology, and is partially supported by a NASA grant.Attached Files
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Additional details
- Eprint ID
- 100300
- Resolver ID
- CaltechAUTHORS:20191216-124218265
- Caltech
- NASA
- Created
-
2019-12-16Created from EPrint's datestamp field
- Updated
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2021-11-16Created from EPrint's last_modified field
- Caltech groups
- Infrared Processing and Analysis Center (IPAC)