Size and Shape of (11351) Leucus from Five Occultations
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Published:2021-09-24
Issue:5
Volume:2
Page:202
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ISSN:2632-3338
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Container-title:The Planetary Science Journal
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language:
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Short-container-title:Planet. Sci. J.
Author:
Buie Marc W.ORCID, Keeney Brian A.ORCID, Strauss Ryder H., Blank Ted E., Moore John G., Porter Simon B.ORCID, Wasserman Lawrence H.ORCID, Weryk Robert J.ORCID, Levison Harold F.ORCID, Olkin Catherine B.ORCID, Leiva RodrigoORCID, Bardecker Jerry E., Brown Michael EORCID, Brown Lilah B, Collins Michael P., Davidson Hugh M., Dunham David W.ORCID, Dunham Joan B., Eaccarino John A., Finley Tiffany J., Fuller Lindsay, Garcia Maria L., George Tony, Getrost Kai, Gialluca Megan, T.ORCID, Givot Rima M., Gupton David, Hanna William H., Hergenrother Carl William, Hernandez Yamir, Hill Bryan, Hinton P. C.ORCID, Holt Timothy R.ORCID, Howell Robert R, Jewell Jack Lee, Kamin Roxanne L., Kammer Joshua A.ORCID, Kareta TheodoreORCID, Kayl Gregory J., Keller John M.ORCID, Kenyon David A., Kester Scott R., Kidd John N.ORCID, Lauer Tod R.ORCID, Leung Cecilia W. S., Lorusso Zoey R., Lundgren Christopher B., Magana Lizeth O., Maley Paul D., Marchis FranckORCID, Marcialis Robert L., McCandless Andrew E., McCrystal Delsie Joy, McGraw Allison Marie, Miller Kelly E.ORCID, Mueller Beatrice E. A.ORCID, Noonan J. W.ORCID, Olsen Aart M., Patton Alexander R., O’Conner Peluso Daniel, Person Michael J.ORCID, Rigby James G., Rolfsmeier Alex D, Salmon Julien J.ORCID, Samaniego Joseph, Sawyer R. P.ORCID, Schulz David M., Skrutskie Michael F, Smith Rose J. C., Spencer John R., Springmann AlessondraORCID, Stanbridge Dale R., Stoffel Timothy J, Tamblyn Peter, Tobias Bryan, Verbiscer Anne J.ORCID, von Schalscha Michael P., Werts Holly, Zhang QichengORCID
Abstract
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 p
V
= 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.
Publisher
American Astronomical Society
Subject
Space and Planetary Science,Earth and Planetary Sciences (miscellaneous),Geophysics,Astronomy and Astrophysics
Cited by
8 articles.
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