Title

A Single-chord Stellar Occultation by the Extreme Trans-Neptunian Object (541132) Leleākūhonua

Authors

Marc W. Buie, Southwest Research Institute
Rodrigo Leiva, Southwest Research Institute
John M. Keller, University of Colorado, Boulder
Josselin Desmars, Sorbonne Universités
Bruno Sicardy, Sorbonne Université
J. J. Kavelaars, National Research Council of Canada
Terry Bridges, Okanagan College
Robert Weryk, University of Hawaii at Manoa
Dave Herald, Royal Astronomical Society of New Zealand
Sean L. Haley, University of Colorado, Boulder
Ryder Strauss, University of Colorado, Boulder
Elizabeth Wilde, University of Colorado, Boulder
Robert Baker, Research and Education Collaborative Occultation Network
Ken Conway, Research and Education Collaborative Occultation Network
Bryan Dean, Research and Education Collaborative Occultation Network
Mackenzie Dunham, Canadian Research and Education Collaborative Occultation Network
James J. Estes, Research and Education Collaborative Occultation Network
Naemi Fiechter, Research and Education Collaborative Occultation Network
Rima Givot, Research and Education Collaborative Occultation Network
Cameron Glibbery, Canadian Research and Education Collaborative Occultation Network
Bruce Gowe, Canadian Research and Education Collaborative Occultation Network
Jennifer N. Hayman, Canadian Research and Education Collaborative Occultation Network
Olivia L. Ireland, Canadian Research and Education Collaborative Occultation Network
Matthew Kehrli, Research and Education Collaborative Occultation Network
Erik M. Moore, Canadian Research and Education Collaborative Occultation Network
Matthew A. MacDonald, Canadian Research and Education Collaborative Occultation Network
Delsie McCrystal, Research and Education Collaborative Occultation Network
Paola Mendoza, Research and Education Collaborative Occultation Network
Bruce Palmquist, Central Washington UniversityFollow
Sherry Rennau, Research and Education Collaborative Occultation Network
Ramsey Schar, Research and Education Collaborative Occultation Network
Diana J. Swanson, Research and Education Collaborative Occultation Network
Emma D. Terris, Canadian Research and Education Collaborative Occultation Network
Holly Werts, Research and Education Collaborative Occultation Network
J. A. Wise, Research and Education Collaborative Occultation Network

Document Type

Article

Department or Administrative Unit

Physics

Publication Date

4-23-2020

Abstract

A stellar occultation by the extreme large-perihelion trans-Neptunian object (541132) Leleākūhonua (also known by the provisional designation of 2015 TG387) was predicted by the Lucky Star project and observed with the Research and Education Collaborative Occultation Network on 2018 October 20 UT. A single detection and a nearby nondetection provide constraints for the size and albedo. When a circular profile is assumed, the radius is r = 110+14-10 km, corresponding to a geometric albedo Pv = 0.21+0.03-0.05, for an adopted absolute magnitude of HV = 5.6, typical of other objects in dynamically similar orbits. The occultation also provides a high-precision astrometric constraint.

Comments

This article was originally published in The Astronomical Journal. The full-text article from the publisher can be found here.

Due to copyright restrictions, this article is not available for free download from ScholarWorks @ CWU.

Journal

The Astronomical Journal

Rights

© 2020. The American Astronomical Society. All rights reserved.

Share

COinS