Differentiation of the asteroid Ceres as revealed by its shape

Nature

Volumn 437, Issue 7056, 2005, Pages 224-226

  Thomas, P C ^a   Parker, J Wm ^b   McFadden, L A ^c   Russell, C T ^d   Stern, S A ^b   Sykes, M V ^e   Young, E F ^b  

^a Cornell University ^*  (United States)

^b SwRI ^*  (United States)

^c Bldg 142   (United States)

^d UNIVERSITY OF CALIFORNIA   (United States)

^e PLANETARY SCIENCE INSTITUTE   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

EARTH (PLANET); GRAVITATION; PLANETS;

ALBEDO; ASTEROIDS; MASS CONCENTRATION; THERMAL PROCESSING;

SOLAR SYSTEM;

ASTEROID;

ARTICLE; ASTRONOMY; GEOLOGY; GRAVITY; METEOROLOGY; NATURAL SCIENCE; PRIORITY JOURNAL; SUNLIGHT; THERMODYNAMICS;

CERES;

EID: 24744440984     PISSN: 00280836     EISSN: None     Source Type: Journal    
DOI: 10.1038/nature03938     Document Type: Article

References (30)

1. McSween, H. Y., Ghosh, A., Grimm, E., Wilson, L. & Young, E. D. in Asteroids III (eds Bottke, W. et al.) 559-571 (Univ. Arizona Press, Tucson, 2002).
2. McCord, T. B., Adams, J. B. & Johnson, T. V. Asteroid Vesta: Spectral reflectivity and compositional implications. Science 168, 1445-1447 (1970).
3. Ghosh, A. & McSween, H. Y. Jr A thermal model for the differentiation of asteroid 4 Vesta, based on radiogenic heating. Icarus 134, 187-206 (1998).
4. McCord, T. B. & Sotin, C. Ceres: Evolution and current state. J. Geophys. Res. 110, E05009, doi:10.1029/2004JE002244 (2005).
5. Parker, J. Wm. et al. Ceres: High-resolution imaging with HST and the determination of physical properties. Adv. Space Res. (in the press).
6. Thomas, P. C. et al. The shape of lo from Galileo limb measurements. Icarus 135, 175-180 (1998).
7. Johnson, T. V. & McGetchin, T. R. Topography on satellite surfaces and the shape of asteroids. Icarus 18, 612-620 (1973).
8. Millis, R. L. et al. The size, shape, density, and albedo of Ceres from its occultation of BD + 8°471. Icarus 72, 507-518 (1987).
9. Schenk, P. M. Crater formation and modification on the icy satellites of Uranus and Saturn-Depth/diameter and central peak occurrence. J. Geophys. Res. 94, 3813-3832 (1989).
10. Thomas, P. C. et al. Impact excavation on asteroid 4 Vesta: Hubble Space Telescope results. Science 277, 1492-1495 (1997).
11. Viateau, B. & Rapport, N. Mass and density of asteroids (4) Vesta and (11) Parthenope. Astron. Astrophys. 370, 602-609 (2001).
12. Hestroffer, D. On equilibrium shapes among binary asteroids. Bull. Am. Astron. Soc. 36, 861 (2004).
13. Dermott, S. F. Shapes and gravitational moments of satellites and asteroids. Icarus 37, 575-586 (1979).
14. Chandrasekhar, S. Ellipsoidal Figures of Equilibrium (Yale Univ. Press, New Haven, 1969).
15. Michalak, G. Determination of asteroid masses - I. (1) Ceres, (2) Pallas and (4) Vesta. Astron. Astrophys. 360, 363-374 (2000).
16. Britt, D. T. & Consolmagno, G. J. Stony meteorite porosities and densities: A review of the data through 2001. Meteorit. Planet. Sci. 38, 1161-1180 (2003).
17. Veverka, J. et al. NEAR's flyby of 253 Mathilde: Images of a C asteroid. Science 278, 2109-2112 (1997).
18. Thomas, P. C. Gravity, tides, and topography on small satellites and asteroids - Application to surface features of the Martian satellites. Icarus 105, 326-344 (1993).
19. Melosh, H. J. Impact Cratering: A Geologic Process (Oxford Univ. Press, New York, 1989).
20. Farinella, P., Davis, D. R., Paolicchi, P., Cellino, A. & Zappala, Z. Asteroid collisional evolution: An integrated model for the evolution of asteroid rotation rates. Astron. Astrophys. 253, 604-614 (1992).
21. Wilson, L., Keil, K., Browning, L. B., Krot, A. N. & Bourcher, W. Early aqueous alteration, explosive disruption, and re-processing of asteroids. Meteorit. Planet. Sci. 34, 541-557 (1999).
22. Grimm, R. E. & McSween, H. Y. Water and the thermal evolution of carbonaceous chondrite parent bodies. Icarus 82, 244-280 (1989).
23. Lebofsky, L. A. et al. The 1.7- to 4.2-micron spectrum of asteroid 1 Ceres - Evidence for structural water in clay minerals. Icarus 48, 453-459 (1981).
24. Feierberg, M. A., Lebofsky, L. A. & Larson, H. P. Spectroscopic evidence for aqueous alteration products on the surfaces of low-albedo asteroids. Geochim. Cosmochim. Acta 45, 971-981 (1981).
25. King, T. V. et al. Evidence for ammonium-bearing minerals on Ceres. Science 255, 1551-1553 (1992).
26. Rivkin, A. S. Observations of Main-belt Asteroids in the 3-μm Region. Ph.D. dissertation, Univ. Arizona (1997).
27. Fanale, F. P. & Salvail, J. R. The water regime of asteroid 1 Ceres. Icarus 82, 97-110 (1989).
28. Saint-Pe, O., Combes, M. & Rigaut, F. Ceres surface properties by high-resolution imaging from earth. Icarus 105, 263-271 (1993).
29. Drummond, J. O., Fungate, R. Q. & Christou, J. G. Full adaptive optics images of asteroids Ceres and Vesta; rotational poles and triaxial ellipsoid dimensions. Icarus 132, 80-99 (1998).
30. Pavlovsky, C. et al. ACS Instrument Handbook, Version 5.0 (Space Telescope Science Institute, Baltimore, 2004).