Neptune's eccentricity and the nature of the Kuiper belt

Science

Volumn 280, Issue 5372, 1998, Pages 2104-2106

  Ward, William R ^a,c   Hahn, Joseph M ^b  

^a CALIFORNIA INSTITUTE OF TECHNOLOGY   (United States)

^b LUNAR AND PLANETARY INSTITUTE   (United States)

^c SOUTHWEST RESEARCH INSTITUTE   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

ASTRONOMY; ORBIT; PRIORITY JOURNAL; REVIEW; ROCK; SPACE FLIGHT;

EID: 0032568885     PISSN: 00368075     EISSN: None     Source Type: Journal    
DOI: 10.1126/science.280.5372.2104     Document Type: Review

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40. 7 eigenfrequency (mostly driven by Uranus) with an amplitude of e ∼ 0.0037.
41. d).
42. 2) are the planet's specific energy and angular momentum, respectively.
43. If the planet instead launched waves at a secular resonance interior to its orbit, its eccentricity would increase.
44. -8.
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47. 8), impacts may continuously generate some eccentricity. Hence, this time scale, rather than the eccentricity damping time given by equation 1, sets the upper limit for disk erosion.
48. 2.
49. -4 so most of the disk's mass is concentrated among its smallest members (4). The KB is also the purported source of the short-period comets (8), which have R sizes of a few kilometers. These two lines of evidence indicate that most of the KB's mass is contained in small, kilometer-sized bodies.
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51. A scattered disk of high eccentricity objects placed there by Neptune (6) is still possible because such a population would not support wave action. However, it would not represent a remnant of material originally comprising a trans-Neptune disk.
52. This is contribution 950 from the Lunar and Planetary Institute, which is operated by the Universities Space Research Association under NASA contract NAGW-4575. The research was conducted in part at the Jet Propulsion Laboratory, California Institute of Technology, under contract with NASA. W.R.W. thanks the Southwest Research Institute for their hospitality during a portion of this effort.