Imaging of Small-Scale Features on 433 Eros from NEAR: Evidence for a Complex Regolith-Reference-Cited by-同舟云学术

Imaging of Small-Scale Features on 433 Eros from NEAR: Evidence for a Complex Regolith

Published:2001-04-20 Issue:5516 Volume:292 Page:484-488
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Veverka J.¹,Thomas P. C.¹,Robinson M.²,Murchie S.³,Chapman C.⁴,Bell M.¹,Harch A.¹,Merline W. J.⁴,Bell J. F.¹,Bussey B.²,Carcich B.¹,Cheng A.³,Clark B.¹,Domingue D.³,Dunham D.³,Farquhar R.³,Gaffey M. J.⁵,Hawkins E.³,Izenberg N.³,Joseph J.¹,Kirk R.⁶,Li H.²,Lucey P.⁷,Malin M.⁸,McFadden L.⁹,Miller J. K.¹⁰,Owen W. M.¹⁰,Peterson C.¹,Prockter L.³,Warren J.³,Wellnitz D.⁹,Williams B. G.¹⁰,Yeomans D. K.¹⁰

Affiliation:

1. Space Sciences Building, Cornell University, Ithaca, NY 14853, USA.

2. Department of Geological Sciences, Northwestern University, 309 Locy Hall, Evanston, IL 60208, USA.

3. Applied Physics Laboratory, Johns Hopkins University, 1110 Johns Hopkins Road, Laurel, MD 20723, USA.

4. Southwest Research Institute, 1050 Walnut Street, Suite 426, Boulder, CO 80302, USA.

5. Department of Earth and Environmental Sciences, Science Center, Rensselaer Polytechnic Institute, 110 8th Street, Troy, NY 12180–3590, USA.

6. U.S. Geological Survey, 2255 North Gemini Drive, Flagstaff, AZ 86001, USA.

7. Hawaii Institute of Geophysics and Planetology, University of Hawaii, 2525 Correa Road, Honolulu, HI 96822, USA.

8. Malin Space Science Systems, Post Office Box 910148, San Diego, CA 92191, USA.

9. Department of Astronomy, University of Maryland, College Park, MD 20742, USA.

10. Jet Propulsion Laboratory, 4800 Oak Grove Drive, Pasadena, CA 91109, USA.

Abstract

On 25 October 2000, the Near Earth Asteroid Rendevous (NEAR)–Shoemaker spacecraft executed a low-altitude flyover of asteroid 433 Eros, making it possible to image the surface at a resolution of about 1 meter per pixel. The images reveal an evolved surface distinguished by an abundance of ejecta blocks, a dearth of small craters, and smooth material infilling some topographic lows. The subdued appearance of craters of different diameters and the variety of blocks and different degrees of their burial suggest that ejecta from several impact events blanketed the region imaged at closest approach and led to the building up of a substantial and complex regolith consisting of fine materials and abundant meter-sized blocks.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

Reference34 articles.

1. For general characteristics of Eros see

2. Veverka J., et al., Science 289, 1993 (2000).

3. “Regolith” is used here in the general sense of unconsolidated fragmental material regardless of formation or transport mechanisms.

4. The NEAR camera the MSI covers the spectral range from 400 to 1000 nm and has a 2.25°-by-2.90° field of view. The 244-by-537–pixel Thomson charge-coupled device has rectangular pixels that subtend 9.5 m by 16.1 m at 100 km. For details see

5. Hawkins S. E., et al., Space Sci. Rev. 82, 31 (1997).

Cited by 145 articles. 订阅此论文施引文献订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献

1. Slow intrusion experiments into granular media under microgravity;Advances in Space Research;2024-03

2. Feature extraction and prediction of granular flow under obstacle influence;Powder Technology;2024-01

3. Current Knowledge of Objects Approaching the Earth;Solar System Research;2023-10

4. Analytic rock abundance distributions and their application to spacecraft landing hazards;Planetary and Space Science;2023-09

5. Collision-probability-based hopping trajectory optimization on hazardous terrain of small bodies;Advances in Space Research;2023-06