Did Saturn`s Rings Form During The Late Heavy Bombardment?
... than previously estimated, which results in longer spreading timescales (based on numerical modeling of gravity wakes, see Daisaka et al., 2001); Monte Carlo simulations of regolith growth show that an efficient re-surfacing of the ring particles is possible (Esposito et al., 2007), which may provid ...
... than previously estimated, which results in longer spreading timescales (based on numerical modeling of gravity wakes, see Daisaka et al., 2001); Monte Carlo simulations of regolith growth show that an efficient re-surfacing of the ring particles is possible (Esposito et al., 2007), which may provid ...
A Survey for “Normal” Irregular Satellites Around Neptune: Limits to
... angular distance from Neptune as those from the first night but the background star fields were slightly different because of Neptune’s movement between the two nights. Images of each field were spaced by about 33 minutes on a given night. Approximately 1.75 square degrees around Neptune were observ ...
... angular distance from Neptune as those from the first night but the background star fields were slightly different because of Neptune’s movement between the two nights. Images of each field were spaced by about 33 minutes on a given night. Approximately 1.75 square degrees around Neptune were observ ...
Coming To A Planet Near You
... • Describe the relative size of the planets as compared to the size of the Sun. • Identify and demonstrate each planet in the order from the Sun, using ...
... • Describe the relative size of the planets as compared to the size of the Sun. • Identify and demonstrate each planet in the order from the Sun, using ...
ORIGIN AND EVOLUTION OF THE SOLAR SYSTEM: An overview
... 2. All the residual planetesimals of Neptune’s accretion zone are scattered inwards to Jupiter’s influence zone, where this planet takes dynamical control and finally ejects them ...
... 2. All the residual planetesimals of Neptune’s accretion zone are scattered inwards to Jupiter’s influence zone, where this planet takes dynamical control and finally ejects them ...
Article PDF - IOPscience
... Cassini (Methone and Pallene) have very low topography, and like comets of comparable size, the supported topography requires strengths well below 100 N m−2 (Thomas et al. 2013), so these kilometer-wide objects in orbit around Saturn do appear to be very weak. Thus, it appears that only objects belo ...
... Cassini (Methone and Pallene) have very low topography, and like comets of comparable size, the supported topography requires strengths well below 100 N m−2 (Thomas et al. 2013), so these kilometer-wide objects in orbit around Saturn do appear to be very weak. Thus, it appears that only objects belo ...
Ch. 13
... Band structure of Neptune is more visible, and Neptune has internal heat source of unknown origin: ...
... Band structure of Neptune is more visible, and Neptune has internal heat source of unknown origin: ...
Icarus Origin of the structure of the Kuiper belt during a... orbits of Uranus and Neptune
... the main features of the belt are the consequence of the outward migration of Neptune, due to its interaction with the primordial planetesimal disk. In this scenario, the planetesimal disk, which was initially dynamically cold, extended to at least ∼50 AU. Neptune migrated on a nearly-circular, low- ...
... the main features of the belt are the consequence of the outward migration of Neptune, due to its interaction with the primordial planetesimal disk. In this scenario, the planetesimal disk, which was initially dynamically cold, extended to at least ∼50 AU. Neptune migrated on a nearly-circular, low- ...
Embedded star clusters and the formation of the Oort Cloud
... as having a < 104 AU) at semi-major axes several thousands of AU. The comets with a > 104 AU are often now called ‘Outer Oort Cloud’ (OOC). How did the Oort Cloud form: how did the comets end up having such large semi-major axes? An early series of simulations to form the Oort Cloud (OC) were perfor ...
... as having a < 104 AU) at semi-major axes several thousands of AU. The comets with a > 104 AU are often now called ‘Outer Oort Cloud’ (OOC). How did the Oort Cloud form: how did the comets end up having such large semi-major axes? An early series of simulations to form the Oort Cloud (OC) were perfor ...
1 Today Kepler`s Laws Question Kepler`s 2nd Law of Planetary Motion
... 1. Orbit of each planet is an ellipse 2. Sweeping out equal areas in equal times 3. T2 = a3 ...
... 1. Orbit of each planet is an ellipse 2. Sweeping out equal areas in equal times 3. T2 = a3 ...
Formation and Dynamical Evolution of the Neptune Trojans – the
... 2009), the Neptunian Trojans represent a unique window into the formation of our Solar system. The distribution of these objects through eccentricity and inclination space has already thrown up significant surprises (such as the apparent excess of highly inclined Trojans, i>5°, over what was previou ...
... 2009), the Neptunian Trojans represent a unique window into the formation of our Solar system. The distribution of these objects through eccentricity and inclination space has already thrown up significant surprises (such as the apparent excess of highly inclined Trojans, i>5°, over what was previou ...
Origin of the Structure of the Kuiper Belt during a Dynamical
... disk. In this scenario, the planetesimal disk, which was initially dynamically cold, extended to at least ∼ 50 AU. Neptune migrated on a nearly-circular, low-inclination orbit, from an unconstrained initial location (estimates ranging from 18 AU — Gomes 2003 — to 23 AU — Malhotra 1995) up to its cur ...
... disk. In this scenario, the planetesimal disk, which was initially dynamically cold, extended to at least ∼ 50 AU. Neptune migrated on a nearly-circular, low-inclination orbit, from an unconstrained initial location (estimates ranging from 18 AU — Gomes 2003 — to 23 AU — Malhotra 1995) up to its cur ...
Why are dense planetary rings only found between 8 and 20 AU?
... effective strengths well below 100 N/m2 (Thomas et al. 2013). Aldditionally, this number is comparable to the estimated strengths of rubble pile asteroids (Sánchez & Scheeres 2014). Thus it is not unreasonable to suppose that the material in Saturn’s and Uranus’ rings is much weaker than the materi ...
... effective strengths well below 100 N/m2 (Thomas et al. 2013). Aldditionally, this number is comparable to the estimated strengths of rubble pile asteroids (Sánchez & Scheeres 2014). Thus it is not unreasonable to suppose that the material in Saturn’s and Uranus’ rings is much weaker than the materi ...
Uranus Neptune Pluto
... Virtually no surface features visible from Earth. ~ 65 % of size of Earth’s Moon. Highly elliptical orbit; coming occasionally closer to the sun than Neptune. Orbit highly inclined (17o) against other planets’ orbits Neptune and Pluto ...
... Virtually no surface features visible from Earth. ~ 65 % of size of Earth’s Moon. Highly elliptical orbit; coming occasionally closer to the sun than Neptune. Orbit highly inclined (17o) against other planets’ orbits Neptune and Pluto ...
Document
... Migration of embryos of Uranus and Neptune Distribution of planetesimals over their semimajor axes at several stages of disk evolution. (Sov. Astron. Letters, v. 17, 113-119, 1991; LPSC, 607-608, 1991; Solar System Res. v. 27, 65-79, 1993. Presented at conf. “Planetesimal dynamics" in Sept. 1992 in ...
... Migration of embryos of Uranus and Neptune Distribution of planetesimals over their semimajor axes at several stages of disk evolution. (Sov. Astron. Letters, v. 17, 113-119, 1991; LPSC, 607-608, 1991; Solar System Res. v. 27, 65-79, 1993. Presented at conf. “Planetesimal dynamics" in Sept. 1992 in ...
The Problem with Pluto
... predicted by astronomer Percival Lowell (1915), known for his theory of Martian canals. Planet X was a body theorized to be more massive than Earth, orbiting beyond Neptune and causing the perturbation astronomers had observed in Uranus’s orbit. The search for this Planet X began in 1905 and was not ...
... predicted by astronomer Percival Lowell (1915), known for his theory of Martian canals. Planet X was a body theorized to be more massive than Earth, orbiting beyond Neptune and causing the perturbation astronomers had observed in Uranus’s orbit. The search for this Planet X began in 1905 and was not ...
ori pro 02 semifin [sfn] - SwRI-Boulder`s
... (Morbidelli & Vokrouhlický 2003). Both play a role during the LHB (Gomes et al. 2005). At present, most bodies that strike the Earth and Moon originate in the inner main belt (Gladman et al. 1997, Bottke et al. 2002), but that may not have been the case during the LHB. Two high-inclination populatio ...
... (Morbidelli & Vokrouhlický 2003). Both play a role during the LHB (Gomes et al. 2005). At present, most bodies that strike the Earth and Moon originate in the inner main belt (Gladman et al. 1997, Bottke et al. 2002), but that may not have been the case during the LHB. Two high-inclination populatio ...
Moons - Stargazers Lounge
... To make this video, we gathered comments about moons from scientists attending the 2013 Lunar and Planetary Science Conference in Houston, Texas. Christine Shupla, who will appear again in later videos, spoke about different kinds of moons. The single thing that they all have in common is that each ...
... To make this video, we gathered comments about moons from scientists attending the 2013 Lunar and Planetary Science Conference in Houston, Texas. Christine Shupla, who will appear again in later videos, spoke about different kinds of moons. The single thing that they all have in common is that each ...
Spin-driven tidal pumping: Tidally driven changes in planetary spin
... star and on the planet (e.g. Jeffreys 1961, Goldreich and Soter 1966, Kaula 1968, Jackson et al. 2008). The tides also affect semi-major axes a, whose changes can modify e-damping rates on comparable timescales (Jackson et al. 2008). Evolution becomes more complex and interesting in multiplanet syst ...
... star and on the planet (e.g. Jeffreys 1961, Goldreich and Soter 1966, Kaula 1968, Jackson et al. 2008). The tides also affect semi-major axes a, whose changes can modify e-damping rates on comparable timescales (Jackson et al. 2008). Evolution becomes more complex and interesting in multiplanet syst ...
Theory of planet formation
... – it is astonishing to see all the planets move around the Sun from west to east, and almost in the same plane; all the satellites move around their planets in the same direction and nearly in the same plane as the planets; finally, the Sun, the planets, and all the satellites that have been observe ...
... – it is astonishing to see all the planets move around the Sun from west to east, and almost in the same plane; all the satellites move around their planets in the same direction and nearly in the same plane as the planets; finally, the Sun, the planets, and all the satellites that have been observe ...
The Human Orrery: a new educational tool for
... wondered what level of accuracy could be achieved. Would it be possible to go further than the model that had originally inspired the idea and illustrate the clearly elliptical, not circular, planetary orbits? And after displaying the orbits on the ground, how accurately could planetary motion be de ...
... wondered what level of accuracy could be achieved. Would it be possible to go further than the model that had originally inspired the idea and illustrate the clearly elliptical, not circular, planetary orbits? And after displaying the orbits on the ground, how accurately could planetary motion be de ...
A coupling of the origin of asteroid belt, planetary ring
... rings also resemble the narrow rings of Uranus, the Neptunian ring system is quite similar to that of Uranus (Esposito 2002; Burns et al. 2001). This similarity suggests that four giant planets’ ring systems are likely to be ruled by a common physics. The observations of crater, star, extraplanet, a ...
... rings also resemble the narrow rings of Uranus, the Neptunian ring system is quite similar to that of Uranus (Esposito 2002; Burns et al. 2001). This similarity suggests that four giant planets’ ring systems are likely to be ruled by a common physics. The observations of crater, star, extraplanet, a ...
A new algorithm for fitting orbits of multiple
... In this section we describe the geometric solution of a Keplerian astrometric reflex motion orbit (due to a single planet), from two-dimensional measurements of the star’s trajectory on the sky, or from measurements of the star’s radial velocity (van de Kamp, 1964). For a depiction of the geometry ...
... In this section we describe the geometric solution of a Keplerian astrometric reflex motion orbit (due to a single planet), from two-dimensional measurements of the star’s trajectory on the sky, or from measurements of the star’s radial velocity (van de Kamp, 1964). For a depiction of the geometry ...
Theme 10.1 -- Leftovers: Comets
... many billions of cometary nuclei in orbits out beyond the orbit of Neptune. You'll see that it's a flattened distribution. Also shown is the orbit of Pluto, which is inclined and quite eccentric, as you notice -- very different from the orbit of the eight inner planets. So the Kuiper Belt, beyond th ...
... many billions of cometary nuclei in orbits out beyond the orbit of Neptune. You'll see that it's a flattened distribution. Also shown is the orbit of Pluto, which is inclined and quite eccentric, as you notice -- very different from the orbit of the eight inner planets. So the Kuiper Belt, beyond th ...