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9 results on '"Lawrence, Kenneth J."'

2. Goldstone and Arecibo radar observations of (99942) Apophis in 2012–2013

Author

Brozović, Marina, Benner, Lance A.M., McMichael, Joseph G., Giorgini, Jon D., Pravec, Petr, Scheirich, Petr, Magri, Christopher, Busch, Michael W., Jao, Joseph S., Lee, Clement G., Snedeker, Lawrence G., Silva, Marc A., Slade, Martin A., Semenov, Boris, Nolan, Michael C., Taylor, Patrick A., Howell, Ellen S., and Lawrence, Kenneth J.

Published
2018
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4. Goldstone radar evidence for short-axis mode non-principal-axis rotation of near-Earth asteroid (214869) 2007 PA8

Author

Brozović, Marina, Benner, Lance A.M., Magri, Christopher, Scheeres, Daniel J., Busch, Michael W., Giorgini, Jon D., Nolan, Michael C., Jao, Joseph S., Lee, Clement G., Snedeker, Lawrence G., Silva, Marc A., Lawrence, Kenneth J., Slade, Martin A., Hicks, Michael D., Howell, Ellen S., Taylor, Patrick A., Sanchez, Juan A., Reddy, Vishnu, Dykhuis, Melissa, and Corre, Lucille Le

Published
2017
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6. Spectral diversity and photometric behavior of main-belt and near-Earth vestoids and (4) Vesta: A study in preparation for the Dawn encounter

Author

Hicks, Michael D., Buratti, Bonnie J., Lawrence, Kenneth J., Hillier, John, Li, Jian-Yang, Reddy, Vishnu, Schröder, Stefan, Nathues, Andreas, Hoffmann, Martin, Corre, Lucille Le, Duffard, Rene, Zhao, Hai-Bin, Raymond, Carol, Russell, Christopher, Roatsch, Thomas, Jaumann, Ralf, Rhoades, Heath, Mayes, Deronda, Barajas, Tzitlaly, Truong, Thien-Tin, Foster, James, and McAuley, Amanda

Published
2014
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8. Radar and optical observations and physical modeling of triple near-Earth Asteroid (136617) 1994 CC

Author

Brozović, Marina, Benner, Lance A.M., Taylor, Patrick A., Nolan, Michael C., Howell, Ellen S., Magri, Christopher, Scheeres, Daniel J., Giorgini, Jon D., Pollock, Joseph T., Pravec, Petr, Galád, Adrián, Fang, Julia, Margot, Jean-Luc, Busch, Michael W., Shepard, Michael K., Reichart, Daniel E., Ivarsen, Kevin M., Haislip, Joshua B., LaCluyze, Aaron P., Jao, Joseph, Slade, Martin A., Lawrence, Kenneth J., and Hicks, Michael D.

Published
2011
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9. Near-nucleus photometry of comets using archived NEAT data

Author

Hicks, Michael D., Bambery, Raymond J., Lawrence, Kenneth J., and Kollipara, Priya

Subjects
Astronomy, Astronomy, Earth sciences
Abstract

To link to full-text access for this article, visit this link: http://dx.doi.org/10.1016/j.icarus.2006.12.023 Byline: Michael D. Hicks (a), Raymond J. Bambery (b), Kenneth J. Lawrence (a), Priya Kollipara (c) Keywords: Comets; Photometry Abstract: Though optimized to discover and track fast moving Near-Earth Objects (NEOs), the Near-Earth Asteroid Tracking (NEAT) survey dataset can be mined to obtain information on the comet population observed serendipitously during the asteroid survey. We have completed analysis of over 400 CCD images of comets obtained during the autonomous operations of two 1.2-m telescopes: the first on the summit of Haleakala on the Hawaiian island of Maui and the second on Palomar Mountain in southern California. Photometric calibrations of each frame were derived using background catalog stars and the near-nucleus comet photometry measured. We measured dust production and normalized magnitudes for the coma and nucleus in order to explore cometary activity and comet size-frequency distributions. Our data over an approximately two-year time frame (2001 August-2003 February) include 52 comets: 12 periodic, 19 numbered, and 21 non-periodic, obtained over a wide range of viewing geometries and helio/geocentric distances. Nuclear magnitudes were estimated for a subset of comets observed. We found that for low-activity comets (AfI Author Affiliation: (a) Jet Propulsion Laboratory, JPL MS 183-501, 4800 Oak Grove Drive, Pasadena, CA 91109, USA (b) Jet Propulsion Laboratory, JPL MS 168-527, 4800 Oak Grove Drive, Pasadena, CA 91109, USA (c) Department of Astronomy, California Institute of Technology, 105-24 Caltech, 1201 East California Blvd., Pasadena, CA 91125, USA Article History: Received 3 May 2006; Revised 13 September 2006

Published
2007

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