DYNAMIC SIMULATION OF MULTIBODY SYSTEMS IN
... witnessed each other grow with our research work and endure the same struggles with reviewers. I enjoyed the partnerships on various lab projects and am grateful that we shared a strong ability to help each other out. Michael Tadros, thank you for your valuable technical advice and insightful talks ...
... witnessed each other grow with our research work and endure the same struggles with reviewers. I enjoyed the partnerships on various lab projects and am grateful that we shared a strong ability to help each other out. Michael Tadros, thank you for your valuable technical advice and insightful talks ...
Impact Mechanics - Assets - Cambridge University Press
... together with some relative velocity at an initial instant termed incidence. After incidence there would be interference or interpenetration of the bodies were it not for the interface pressure that arises in a small area of contact between the two bodies. At each instant during the contact period, ...
... together with some relative velocity at an initial instant termed incidence. After incidence there would be interference or interpenetration of the bodies were it not for the interface pressure that arises in a small area of contact between the two bodies. At each instant during the contact period, ...
Satellite names worth remembering
... orbit.” This isn’t easy to explain, for such a large moon. ...
... orbit.” This isn’t easy to explain, for such a large moon. ...
Oort Cloud Formation and Dynamics
... stellar perturbations eventually cause the comets to attain a nearly isotropic velocity distribution, with a median inclination to the ecliptic of 90° and a median eccentricity of 0.7. Subsequently, passing stars reduce the perihelion distances of a small fraction of these comets so that they reente ...
... stellar perturbations eventually cause the comets to attain a nearly isotropic velocity distribution, with a median inclination to the ecliptic of 90° and a median eccentricity of 0.7. Subsequently, passing stars reduce the perihelion distances of a small fraction of these comets so that they reente ...
CHAPTER 1 Meteorites, Asteroids, and Comets
... meteorites to planetesimallike parent bodies. • However, the small meteorites in the solar system cannot be fragments of the planetesimals that formed the planets. – They would have been swept up by the planets in only a billion years or less. – They could not have survived for 4.6 billion years. ...
... meteorites to planetesimallike parent bodies. • However, the small meteorites in the solar system cannot be fragments of the planetesimals that formed the planets. – They would have been swept up by the planets in only a billion years or less. – They could not have survived for 4.6 billion years. ...
THE IRREGULAR SATELLITES: THE MOST COLLISIONALLY
... code; beyond a hypothesis, they would need to provide expected orbits and size distributions for their objects. The limitations of irregular satellite capture models in the literature are discussed in Section 3.1. Our paper is organized as follows. In Section 2, we discuss what is known about the ir ...
... code; beyond a hypothesis, they would need to provide expected orbits and size distributions for their objects. The limitations of irregular satellite capture models in the literature are discussed in Section 3.1. Our paper is organized as follows. In Section 2, we discuss what is known about the ir ...
Regular and Chaotic Dynamics in the Mean
... By definition, the proper angles evolve linearly with time, with fixed frequencies provided by the planetary theory. We will denote by nj, gj, sj the orbital, perihelion, and node frequencies respectively. In fact, because Av, Bv, Cv, Dv in equation (4) are small, the new j — functions of the planet ...
... By definition, the proper angles evolve linearly with time, with fixed frequencies provided by the planetary theory. We will denote by nj, gj, sj the orbital, perihelion, and node frequencies respectively. In fact, because Av, Bv, Cv, Dv in equation (4) are small, the new j — functions of the planet ...
On the formation of Uranus and Neptune
... Jupiter (the large dot), a t 3 x lo4 years (top panel) and 2 x 105years (bottom panel)These times are, respectively, just before and just after the penod during which a protoplanet repeatedly crossed the region interior to Jupiter (cf- Fig. 5.3). Jupiter in this run has moved inward to 4.8 AU, 0.4AU ...
... Jupiter (the large dot), a t 3 x lo4 years (top panel) and 2 x 105years (bottom panel)These times are, respectively, just before and just after the penod during which a protoplanet repeatedly crossed the region interior to Jupiter (cf- Fig. 5.3). Jupiter in this run has moved inward to 4.8 AU, 0.4AU ...
A Thick Cloud of Neptune Trojans and Their Colors
... of the planets. Neptune_s formation was probably quite different from Jupiter_s (15), and thus gas drag (1) or rapid mass growth of the planet (2, 7), as suggested for Jupiter Trojan capture, was probably not effective near Neptune. This suggests that the formation and possible capture of Neptune_s ...
... of the planets. Neptune_s formation was probably quite different from Jupiter_s (15), and thus gas drag (1) or rapid mass growth of the planet (2, 7), as suggested for Jupiter Trojan capture, was probably not effective near Neptune. This suggests that the formation and possible capture of Neptune_s ...
an ultradeep survey for irregular satellites of uranus
... the precession of their orbital plane is primarily controlled by the Sun instead of the planet’s oblateness. In other words, the satellite’s inclination is fixed relative to the planet’s orbital plane instead of the planet’s equator. By this definition, any satellite with a semimajor axis larger tha ...
... the precession of their orbital plane is primarily controlled by the Sun instead of the planet’s oblateness. In other words, the satellite’s inclination is fixed relative to the planet’s orbital plane instead of the planet’s equator. By this definition, any satellite with a semimajor axis larger tha ...
Ultra Deep Survey for Irregular Satellites of Uranus: Limits to
... Images were obtained with a Kron-Cousins R-band filter (central wavelength near 650 nm). The images were bias subtracted and then flat-fielded with dome flats taken at the end of each night. During exposures the telescope was autoguided sidereally on field stars. Seeing during the two nights varied ...
... Images were obtained with a Kron-Cousins R-band filter (central wavelength near 650 nm). The images were bias subtracted and then flat-fielded with dome flats taken at the end of each night. During exposures the telescope was autoguided sidereally on field stars. Seeing during the two nights varied ...
Presentation in PDF format.
... What could have led to these ideas? Seneca (c.4 BC – 65 AD) gives some insight. Referring to the ‘difference’ between us Romans and Etruscans, he remarks, “. . . We believe that lightning is caused by clouds colliding, whereas they believe that clouds collide in order to create lightning. Since they ...
... What could have led to these ideas? Seneca (c.4 BC – 65 AD) gives some insight. Referring to the ‘difference’ between us Romans and Etruscans, he remarks, “. . . We believe that lightning is caused by clouds colliding, whereas they believe that clouds collide in order to create lightning. Since they ...
Critique of Modern Oort Comet Theory
... Once an orbit is made more elliptical, it becomes likely for it to cross the orbits of the planets. Thus, some kind of gravitational interaction with a planet would also be more likely. This is believed to lead to comet orbits being altered into very long eccentric orbits that would put their farthe ...
... Once an orbit is made more elliptical, it becomes likely for it to cross the orbits of the planets. Thus, some kind of gravitational interaction with a planet would also be more likely. This is believed to lead to comet orbits being altered into very long eccentric orbits that would put their farthe ...
The scattered disk population as a source of Oort cloud comets
... ∼ 6 × 108 SDOs could supply all the observed JF comets, though this result might be model-dependent and actually represent a lower limit. This is because they start with a sample of test particles already in Neptune-encountering orbits, while a large fraction of the SDOs have perihelia well above Ne ...
... ∼ 6 × 108 SDOs could supply all the observed JF comets, though this result might be model-dependent and actually represent a lower limit. This is because they start with a sample of test particles already in Neptune-encountering orbits, while a large fraction of the SDOs have perihelia well above Ne ...
Black rain: The burial of the Galilean satellites in irregular satellite
... magnitude higher than those between typical main belt asteroids (Nesvorný et al., 2003, 2004, 2007; Bottke et al., 2010). Thus, if there are irregular satellites, collisions will be a common fact of life. Beyond this, in Bottke et al. (2010), it was shown that a collisional cascade among a large pr ...
... magnitude higher than those between typical main belt asteroids (Nesvorný et al., 2003, 2004, 2007; Bottke et al., 2010). Thus, if there are irregular satellites, collisions will be a common fact of life. Beyond this, in Bottke et al. (2010), it was shown that a collisional cascade among a large pr ...
the comet`s tale - Institute of Astronomy
... policy on the length of time that they or BAA Officers should serve. I suggest that it is best practice to have a time limit of no more than three successive three-year terms or ten years without a break. This would create opportunities for change, which are often lost when one person stays in post ...
... policy on the length of time that they or BAA Officers should serve. I suggest that it is best practice to have a time limit of no more than three successive three-year terms or ten years without a break. This would create opportunities for change, which are often lost when one person stays in post ...
Full text - FNWI (Science) Education Service Centre
... not all of the planet-crossing comets were ejected. Some comets did not gain enough energy to be lost to the ISM but instead were perturbed onto orbits with very large semi-major axes. Their perihelion distances however, remained within the planetary orbits. This means that, although the comet will ...
... not all of the planet-crossing comets were ejected. Some comets did not gain enough energy to be lost to the ISM but instead were perturbed onto orbits with very large semi-major axes. Their perihelion distances however, remained within the planetary orbits. This means that, although the comet will ...
Early Dynamical Evolution of the Solar System: Pinning Down the
... 2007). Simultaneously if another planet, whose semimajor axis is larger, is migrating inwards faster, it will eventually encounter a mean-motion resonance. Under a large spectrum of circumstances, converging orbits can lead to capture into a mean-motion resonance, ensuring that the two planets’ peri ...
... 2007). Simultaneously if another planet, whose semimajor axis is larger, is migrating inwards faster, it will eventually encounter a mean-motion resonance. Under a large spectrum of circumstances, converging orbits can lead to capture into a mean-motion resonance, ensuring that the two planets’ peri ...
Black Rain: The Burial of the Galilean Satellites in Irregular
... captured with Trojan asteroid-like SFDs, Bottke et al. (2010) found their model irregular satellite populations literally self-destructed within hundreds of My after capture. A sample of their results is shown in Fig. 6. It shows how mutual collisions can readily transform a Trojan-like SFD into Jup ...
... captured with Trojan asteroid-like SFDs, Bottke et al. (2010) found their model irregular satellite populations literally self-destructed within hundreds of My after capture. A sample of their results is shown in Fig. 6. It shows how mutual collisions can readily transform a Trojan-like SFD into Jup ...
Planet X, Comets and Earth Changes
... an ongoing basis. He pointed to the planet Venus, the Jovian moon Io, the Saturnian moon Titan and the small planet Pluto (which supports an atmosphere even though it is so distant from the warmth of the Sun and has insufficient gravity to hold an atmosphere for long) as being obvious new members of ...
... an ongoing basis. He pointed to the planet Venus, the Jovian moon Io, the Saturnian moon Titan and the small planet Pluto (which supports an atmosphere even though it is so distant from the warmth of the Sun and has insufficient gravity to hold an atmosphere for long) as being obvious new members of ...
Ch. 11 - Astro1010
... Io is the most dense of Jupiter’s moons, and the most geologically active object in the solar system. It has many active volcanoes, some quite large. It can change surface features in a few weeks There are no impact craters; they fill in too fast – Io has the youngest surface of any solar system obj ...
... Io is the most dense of Jupiter’s moons, and the most geologically active object in the solar system. It has many active volcanoes, some quite large. It can change surface features in a few weeks There are no impact craters; they fill in too fast – Io has the youngest surface of any solar system obj ...
The Origin of Comets - Wesley Grove Chapel
... Tidal effects often tear comets apart, showing that comets have almost no strength. Two humans could pull apart a comet nucleus several miles in diameter. In comparison, the strength of an equally large snowball would be gigantic. In 1992, tidal forces dramatically tore comet Shoemaker-Levy 9 into 2 ...
... Tidal effects often tear comets apart, showing that comets have almost no strength. Two humans could pull apart a comet nucleus several miles in diameter. In comparison, the strength of an equally large snowball would be gigantic. In 1992, tidal forces dramatically tore comet Shoemaker-Levy 9 into 2 ...
Our Solar System
... a. icy grains beyond the present orbit of Jupiter. b. metallic grains near the present orbit of Mercury. c. silicate grains near the present orbit of Earth. d. all of the above e. none of the above Protoplanets of the Jovian planets could have grown very hot from a. heat for the sun. b. radioactivit ...
... a. icy grains beyond the present orbit of Jupiter. b. metallic grains near the present orbit of Mercury. c. silicate grains near the present orbit of Earth. d. all of the above e. none of the above Protoplanets of the Jovian planets could have grown very hot from a. heat for the sun. b. radioactivit ...
Pluto`s Identity Crisis
... NARRAT OR : “On ce upon a time, not long ago, the nine planets were all playing in their orbits around the Sun, as planets are prone to do. Jupiter was stirring its Great Red Spot. Venus and Uranus were playing peek-a-boo through thick clouds. Mars was kicking up a storm of red dust, and Saturn was ...
... NARRAT OR : “On ce upon a time, not long ago, the nine planets were all playing in their orbits around the Sun, as planets are prone to do. Jupiter was stirring its Great Red Spot. Venus and Uranus were playing peek-a-boo through thick clouds. Mars was kicking up a storm of red dust, and Saturn was ...
Comet Shoemaker–Levy 9
Comet Shoemaker–Levy 9 (formally designated D/1993 F2) was a comet that broke apart and collided with Jupiter in July 1994, providing the first direct observation of an extraterrestrial collision of Solar System objects. This generated a large amount of coverage in the popular media, and the comet was closely observed by astronomers worldwide. The collision provided new information about Jupiter and highlighted its role in reducing space debris in the inner Solar System.The comet was discovered by astronomers Carolyn and Eugene M. Shoemaker and David Levy. Shoemaker–Levy 9, at the time captured by and orbiting Jupiter, was located on the night of March 24, 1993, in a photograph taken with the 40 cm (16 in) Schmidt telescope at the Palomar Observatory in California. It was the first comet observed to be orbiting a planet, and had probably been captured by the planet around 20 – 30 years earlier.Calculations showed that its unusual fragmented form was due to a previous closer approach to Jupiter in July 1992. At that time, the orbit of Shoemaker–Levy 9 passed within Jupiter's Roche limit, and Jupiter's tidal forces had acted to pull apart the comet. The comet was later observed as a series of fragments ranging up to 2 km (1.2 mi) in diameter. These fragments collided with Jupiter's southern hemisphere between July 16 and July 22, 1994, at a speed of approximately 60 km/s (37 mi/s) or 216,000 km/h (134,000 mph). The prominent scars from the impacts were more easily visible than the Great Red Spot and persisted for many months.