Size and shape of (11351) leucus from five occultations
Article
Article Title | Size and shape of (11351) leucus from five occultations |
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ERA Journal ID | 214329 |
Article Category | Article |
Authors | Buie, Marc W., Keeney, Brian A., Strauss, Ryder H., Blank, Ted E., Moore, John G., Porter, Simon B., Wasserman, Lawrence H., Weryk, Robert J., Levison, Harold F., Olkin, Catherine B., Leiva, Rodrigo, Bardecker, Jerry E., Brown, Michael E, Brown, Lilah B, Collins, Michael P., Davidson, Hugh M., Dunham, David W., Dunham, Joan B., Eaccarino, John A., Finley, Tiffany J., Fuller, Lindsay, Garcia, Maria L., George, Tony, Getrost, Kai, Gialluca, Megan T., Givot, Rima M., Gupton, David, Hanna, William H., Hergenrother, Carl William, Hernandez, Yamir, Hill, Bryan, Hinton, P. C., Holt, Timothy R., Howell, Robert R., Jewell, Jack Lee, Kamin, Roxanne L., Kammer, Joshua A., Kareta, Theodore, Kayl, Gregory J., Keller, John M., Kenyon, David A., Kester, Scott R. II, Kidd, John N. Jr., Lauer, Tod R., Leung, Cecilia W. S., Lorusso, Zoey R., Lundgren, Christopher B., Magana, Lizeth O., Maley, Paul D., Marchis, Franck, Marcialis, Robert L., McCandless, Andrew E., McCrystal, Delsie Joy, McGraw, Allison Marie, Miller, Kelly E., Mueller, Beatrice E. A., Noonan, J. W., Olsen, Aart M., Patton, Alexander R., O’Conner Peluso, Daniel, Person, Michael J., Rigby, James G., Rolfsmeier, Alex D., Salmon, Julien J., Samaniego, Joseph, Sawyer, R. P., Schulz, David M., Skrutskie, Michael F., Smith, Rose J. C., Spencer, John R., Springmann, Alessondra, Stanbridge, Dale R., Stoffel, Timothy J., Tamblyn, Peter, Tobias, Bryan, Verbiscer, Anne J., von Schalscha, Michael P., Werts, Holly and Zhang, Qicheng |
Journal Title | The Planetary Science Journal |
Journal Citation | 2 (5), pp. 1-38 |
Article Number | 202 |
Number of Pages | 38 |
Year | 2021 |
Publisher | American Astronomical Society |
Place of Publication | United States |
ISSN | 2632-3338 |
Digital Object Identifier (DOI) | https://doi.org/10.3847/PSJ/ac1f9b |
Web Address (URL) | https://iopscience.iop.org/article/10.3847/PSJ/ac1f9b |
Abstract | We present observations of five stellar occultations for (11351) Leucus and reports from two efforts on (21900) Orus. Both objects are prime mission candidate targets for the Lucy Discovery mission. Combined results for Leucus indicate a very dark surface with pV = 0.037 ± 0.001, which is derived from the average of the multichord occultations. Our estimate of the triaxial ellipsoidal shape is for axial diameters of 63.8 × 36.6 × 29.6 km assuming that the spin pole is normal to the line of sight. The actual shape of the object is only roughly elliptical in profile at each epoch. Significant topography is seen with horizontal scales up to 30 km and vertical scales up to 5 km. The most significant feature is a large depression on the southern end of the object as seen from a terrestrial viewpoint. For this work we developed a method to correct for differential refraction, accounting for the difference in color between the target object and the reference stars for astrometry derived from ground-based images. |
Keywords | Astrometry (80); Jupiter trojans (874); Unified Astronomy Thesaurus concepts: Stellar occultation (2135) |
Contains Sensitive Content | Does not contain sensitive content |
ANZSRC Field of Research 2020 | 510905. Solar system planetary science (excl. planetary geology) |
Funder | National Science Foundation |
Byline Affiliations | Southwest Research Institute, United States |
University of Colorado Boulder, United States | |
Research and Education Collaborative Occultation Network, United States | |
International Occultation Timing Association, United States | |
Lowell Observatory, United States | |
University of Hawaii, United States | |
California Institute of Technology (Caltech), United States | |
Polytechnic School, United States | |
Denver Astronomical Society, United States | |
University of Texas at San Antonio, United States | |
Sisters High School, United States | |
Calipatria High School, United States | |
University of Arizona, United States | |
Centre for Astrophysics | |
University of Wyoming, United States | |
NSF's National Optical Infrared Astronomy Research Laboratory (NOIRLab), United States | |
Unistellar, France | |
SETI Institute, United States | |
Planetary Science Institute, United States | |
Massachusetts Institute of Technology, United States | |
Surprise Valley Joint Unified School District, United States | |
University of Virginia, United States | |
Software Bisque, United States | |
KinetX Aerospace, United States |
https://research.usq.edu.au/item/v8705/size-and-shape-of-11351-leucus-from-five-occultations
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