Discovery of the candidate Kuiper belt object 1992 QB1

Jewitt, David; Luu, Jane

doi:10.1038/362730a0

Cited by 471 publications

(250 citation statements)

References 14 publications

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“…The discovery of the first extra-solar planets has thrown open the field of planetary formation, with many unexpected results being obtained (Mayor and Queloz, 1995;Perryman, 2000). At the same time, the discovery of the EdgeworthÀKuiper belt and Scattered disk (Jewitt and Luu, 1993) beyond Neptune, together with the detailed study of their dynamics (e.g. Malhotra et al, 2000;Levison and Morbidelli, 2003;Emel'yaneko et al 2004), has placed some new constraints on the migration of the outer planets.…”

Section: Introductionmentioning

confidence: 99%

“…At the same time, the discovery of the EdgeworthÀKuiper belt and Scattered disk (Jewitt and Luu, 1993) beyond Neptune, together with the detailed study of their dynamics (e.g. Malhotra et al, 2000;Levison and Morbidelli, 2003;Emel'yaneko et al 2004), has placed some new constraints on the migration of the outer planets.…”

Section: Introductionmentioning

confidence: 99%

“…Many models have been proposed over the years (e.g. Lyttleton, 1941;Pendred and Williams, 1968;Oxley and Woolfson, 2004), based on the evidence available at the time. However, the formation mechanism is debated as strongly now as at any point in history.…”

Section: Introductionmentioning

confidence: 99%

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Constraints on the Formation Regions of Comets from their D:H Ratios

2006

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Abstract. Studies of the D:H ratio in H 2 O within the Solar nebula provide a relationship between the degree of enrichment of deuterium and the distance from the young Sun. In the context of cometary formation, such models suggest that comets which formed in different regions of the Solar nebula should have measurably different D:H ratios. We aim to illustrate how the observed comets can give information about the formation regions of the reservoirs in which they originated. After a discussion of the current understanding of the regions in which comets formed, simple models of plausible formation regions for two different cometary reservoirs (the EdgeworthÀKuiper belt and the Oort Cloud) are convolved with a deuterium-enrichment profile for the pre-solar nebula. This allows us to illustrate how different formation regions for these objects can lead to great variations in the deuterium enrichment distributions that we would observe in comets today. We also provide an illustrative example of how variations in the population within a source region can modify the resulting observational profile. The convolution of a deuterium-enrichment profile with examples of proto-cometary populations gives a feel for how observations could be used to draw conclusions on the formation region of comets which are currently fed into the inner Solar system from at least two reservoirs. Such observations have, to date, been carried out on only three comets, but future work with instruments such as ALMA and Herschel should vastly improve the dataset, leading to a clearer consensus on the formation of the Oort cloud and EdgeworthÀKuiper belt.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Constraints on the Formation Regions of Comets from their D:H Ratios

2006

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“…In 1930, US astronomer Clyde Tombaugh found Pluto, orbiting at a distance of around 40 au. And in 1992, astronomers David Jewitt, then at the University of Hawaii, and Jane Luu, then at the University of California, Berkeley, discovered an even more distant object, beginning the exploration of a region of space called the Kuiper belt 3 .…”

Section: Unknown Zonementioning

confidence: 99%

On the hunt for a mystery planet

Witze¹

2016

Nature

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stronomer Scott Sheppard runs through his checklist as he settles in for a long night of skygazing at the Subaru telescope atop Mauna Kea, Hawaii. The air above the summit: clear. The telescope: working smoothly. His 3-terabyte hard drive: emptied and ready to accept a flood of fresh data in the hours to come.On a wall in the observing room, three clocks track the hours in Hawaii, Tokyo and Coordinated Universal Time. Screens display every tic of the weather above the summit: wind direction, temperature and the dreaded humidity levels that could end this November night of observing if they were to rise. But for now, conditions are nearly perfect, especially when it comes to a characteristic known as seeing -a measure of how stable the stars above look. "Seeing is point-five-five, " says David Tholen, an astronomer at the University of Hawaii in Manoa. "It doesn't get much

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“…Since 1992, when the first small body was discovered (Jewitt and Luu, 1993), hundreds of such small bodies, called trans-Neptunian objects (TNOs), have been detected and are included in the associated list of the Minor Planet Center (http://cfa-www.harvard.edu/iau/ mpc.html, Jewitt, 1999). The study of their dynamical evolution provides valuable information towards the understanding of the origin, the formation and the structure of our Solar system (Morbidelli et al, 2003).…”

Section: Introductionmentioning

confidence: 99%

Planar periodic orbits in exterior resonances with Neptune

Voyatzis

Kotoulas

2005

Planetary and Space Science

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In the framework of the planar restricted three body problem we study a considerable number of resonances associated to the Kuiper Belt dynamics and located between 30 and 48 a.u. Our study is based on the computation of resonant periodic orbits and their stability. Stable periodic orbits are surrounded by regular librations in phase space and in such domains the capture of trans-Neptunian object is possible. All the periodic orbits found are symmetric and there is evidence for the existence of asymmetric ones only in few cases. In the present work first, second and third order resonances are under consideration. In the planar circular case we found that most of the periodic orbits are stable. The families of periodic orbits are temporarily interrupted by collisions but they continue up to relatively large values of the Jacobi constant and highly eccentric regular motion exists for all cases. In the elliptic problem and for a particular eccentricity value of the primary bodies the periodic orbits are isolated. The corresponding families, where they belong to, bifurcate from specific periodic orbits of the circular problem and seem to continue up to the rectilinear problem. Both stable and unstable orbits are obtained for each case. In the elliptic problem the unstable orbits found are associated with narrow chaotic domains in phase space. The evolution of the orbits, which are located in such chaotic domains, seems to be practically regular and bounded for long time intervals.

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Discovery of the candidate Kuiper belt object 1992 QB1

Cited by 471 publications

References 14 publications

Constraints on the Formation Regions of Comets from their D:H Ratios

Constraints on the Formation Regions of Comets from their D:H Ratios

On the hunt for a mystery planet

Planar periodic orbits in exterior resonances with Neptune

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