SkyWatcher2017.5 1.3 Mb - Boise Astronomical Society
... 5/26 The Moon is at perigee, subtending 33' 27'' from a distance of 357,210 kilometers (221,958 miles), at 1:21; a double Galilean satellite shadow transit begins at 5:47; Mercury is at its greatest latitude south of the ecliptic plane (-7.0 degrees) at 20:00 5/27 Mars is 5.3 degrees north of the Mo ...
... 5/26 The Moon is at perigee, subtending 33' 27'' from a distance of 357,210 kilometers (221,958 miles), at 1:21; a double Galilean satellite shadow transit begins at 5:47; Mercury is at its greatest latitude south of the ecliptic plane (-7.0 degrees) at 20:00 5/27 Mars is 5.3 degrees north of the Mo ...
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... minutes to 24.8 arc minutes but increases in illumination from 27% to 48% during the course of the month. As the sun rises in late May, Venus will reach an altitude of about 23 degrees for observers at 40 degrees north. The brightest planet is at the descending node on May 9th. On May 22nd, Venus li ...
... minutes to 24.8 arc minutes but increases in illumination from 27% to 48% during the course of the month. As the sun rises in late May, Venus will reach an altitude of about 23 degrees for observers at 40 degrees north. The brightest planet is at the descending node on May 9th. On May 22nd, Venus li ...
Picturing Objects in the Making: Scheiner, Galileo and the Discovery
... to be represented. Because an emerging object cannot, by virtue of being emerging, be reducible to an accepted kind, its representations cannot just refer to a kind - a kind that is in the process of being established. The "referent function," therefore, must be supplemented by something else. The s ...
... to be represented. Because an emerging object cannot, by virtue of being emerging, be reducible to an accepted kind, its representations cannot just refer to a kind - a kind that is in the process of being established. The "referent function," therefore, must be supplemented by something else. The s ...
Pluto Flyby - New Horizons - The Johns Hopkins University Applied
... Reaching this “third” zone of our solar system — beyond the inner, rocky planets and outer gas giants — has been a space science priority for years, because it holds building blocks of our solar system that have been stored in a deep freeze for billions of years. In the early 2000s the National Acad ...
... Reaching this “third” zone of our solar system — beyond the inner, rocky planets and outer gas giants — has been a space science priority for years, because it holds building blocks of our solar system that have been stored in a deep freeze for billions of years. In the early 2000s the National Acad ...
Absolute Flux Calibration
... Flux Calibrators: Satellites • Pro: - They are quite compact (hence better for extended configurations and/or higher frequencies than planets) and still sufficiently bright (>500mJy@3mm) ...
... Flux Calibrators: Satellites • Pro: - They are quite compact (hence better for extended configurations and/or higher frequencies than planets) and still sufficiently bright (>500mJy@3mm) ...
Preprint - Lunar and Planetary Laboratory
... Unless otherwise noted, each of our simulations included the four giant planets Jupiter, Saturn, Tab. 1 Uranus, and Neptune. The radial migration of these planets followed a smooth time variation of their semi-major axes, a. A time scale τ was used to characterize the migration, where a(t) = a(0) + ...
... Unless otherwise noted, each of our simulations included the four giant planets Jupiter, Saturn, Tab. 1 Uranus, and Neptune. The radial migration of these planets followed a smooth time variation of their semi-major axes, a. A time scale τ was used to characterize the migration, where a(t) = a(0) + ...
Jewel of the Solar System INTRODUCTION
... Kids love space, and their favorite planet is often the magnificent ringed “Jewel of our Solar System” – Saturn! Saturn is the sixth planet from our Sun and the second largest planet in our Solar System (after Jupiter). Pressures and temperatures inside Saturn are so extreme that they cannot be dupl ...
... Kids love space, and their favorite planet is often the magnificent ringed “Jewel of our Solar System” – Saturn! Saturn is the sixth planet from our Sun and the second largest planet in our Solar System (after Jupiter). Pressures and temperatures inside Saturn are so extreme that they cannot be dupl ...
Chapter 21 A Family of Planets
... 7HY 'ROUP THE )NNER 0LANETS 4OGETHER 4HE INNER SOLAR SYSTEM INCLUDES THE ONLY PLANET KNOWN TO SUPPORT LIFE %ARTH AND THREE OTHER PLANETS 4HESE FOUR INNER PLANETS ARE CALLED TERRESTRIAL PLANETS BECAUSE THEY ALL HAVE A CHEMICAL MAKEUP SIMILAR TO THAT OF %ARTH 4HE TERRESTRIAL PLANETS ARE MUCH ...
... 7HY 'ROUP THE )NNER 0LANETS 4OGETHER 4HE INNER SOLAR SYSTEM INCLUDES THE ONLY PLANET KNOWN TO SUPPORT LIFE %ARTH AND THREE OTHER PLANETS 4HESE FOUR INNER PLANETS ARE CALLED TERRESTRIAL PLANETS BECAUSE THEY ALL HAVE A CHEMICAL MAKEUP SIMILAR TO THAT OF %ARTH 4HE TERRESTRIAL PLANETS ARE MUCH ...
Regular and Chaotic Dynamics in the Mean
... the phenomenon referred to as “stable chaos.” It was previously noted that a large number of asteroids have strongly chaotic orbits yet are stable on long intervals of time (Milani and Nobili, 1992; Milani et al., 1997). The main reason for such behavior was revealed by the discovery of the so-calle ...
... the phenomenon referred to as “stable chaos.” It was previously noted that a large number of asteroids have strongly chaotic orbits yet are stable on long intervals of time (Milani and Nobili, 1992; Milani et al., 1997). The main reason for such behavior was revealed by the discovery of the so-calle ...
File
... The GDS is 6000 km wide Scooter is the white area to the lower left Below it is a smaller dark spot with a bright core. All 3 move at different speeds around the planet ...
... The GDS is 6000 km wide Scooter is the white area to the lower left Below it is a smaller dark spot with a bright core. All 3 move at different speeds around the planet ...
On the formation of Uranus and Neptune
... m a s distribution predicted by Eq. 3.6 with an initial mass of 0.2 Ma. . . . . . . . . T h e s t a t e o f R u n A at2Myrs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . The state of Run A a t 4 Myrs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . The state at 1 x IO? yea ...
... m a s distribution predicted by Eq. 3.6 with an initial mass of 0.2 Ma. . . . . . . . . T h e s t a t e o f R u n A at2Myrs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . The state of Run A a t 4 Myrs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . The state at 1 x IO? yea ...
Accretion of Uranus and Neptune from inward
... by pebble accretion. The ice giants have large obliquities (spin axis inclinations relative to their orbital planes): about 90 degrees for Uranus and about 30 degrees for Neptune. A planet accreting only small bodies should have a null obliquity (Dones and Tremaine, 1993; Johansen and Lacerda, 2010) ...
... by pebble accretion. The ice giants have large obliquities (spin axis inclinations relative to their orbital planes): about 90 degrees for Uranus and about 30 degrees for Neptune. A planet accreting only small bodies should have a null obliquity (Dones and Tremaine, 1993; Johansen and Lacerda, 2010) ...
ABSTRACT
... required for the geocentric model to match observation. By Copernicus’ time some 1400 years later (1473 - 1543), each planet could have as many as 40 − 60 epicycles in order to match observations, which drove Copernicus to reconsider the heliocentric model of the universe (De Revolutionibus Orbium C ...
... required for the geocentric model to match observation. By Copernicus’ time some 1400 years later (1473 - 1543), each planet could have as many as 40 − 60 epicycles in order to match observations, which drove Copernicus to reconsider the heliocentric model of the universe (De Revolutionibus Orbium C ...
Resonant Origins for Pluto`s High Inclination
... We first encountered the effects of secular resonances while we were still examining the behaviors of mean motion resonances between Neptune and Pluto. In simulations with extremely slow drag rates (2 × 10−11 AU·yr−1 ) and non-zero initial eccentricities (eP = 0.02), Pluto would occasionally become ...
... We first encountered the effects of secular resonances while we were still examining the behaviors of mean motion resonances between Neptune and Pluto. In simulations with extremely slow drag rates (2 × 10−11 AU·yr−1 ) and non-zero initial eccentricities (eP = 0.02), Pluto would occasionally become ...
Comprehensive Wide-Band Magnitudes and Albedos for the Planets
... Schmidt-Cassegrain telescope, an SBIG CCD camera containing a cooled Kodak KAF-0400 sensor, and a set of five Generation 2 Astrodon Sloan filters. The observations were scheduled so that the air masses were generally less than 1.5. Reference stars were chosen to be nearby their planets or at least t ...
... Schmidt-Cassegrain telescope, an SBIG CCD camera containing a cooled Kodak KAF-0400 sensor, and a set of five Generation 2 Astrodon Sloan filters. The observations were scheduled so that the air masses were generally less than 1.5. Reference stars were chosen to be nearby their planets or at least t ...
Program with Abstracts - Division on Dynamical Astronomy
... orbits with periods shorter than ~200 days. Those systems must have survived for the ages of their host stars (~5 Gyr), so their forma"on mechanism must provide inter-planet spacings that permit long-term stability. If one postulates that most planetary systems form with "ghtly-packed inner planets, ...
... orbits with periods shorter than ~200 days. Those systems must have survived for the ages of their host stars (~5 Gyr), so their forma"on mechanism must provide inter-planet spacings that permit long-term stability. If one postulates that most planetary systems form with "ghtly-packed inner planets, ...
Minor Bodies of the Solar System
... apogee in the orbit of a satellite, the point at which the satellite is farthest from Earth perigee in the orbit of a satellite, the point at which the satellite is closest to Earth • The orbit of the moon around Earth forms an ellipse, the distance between Earth and the moon varies over a month’s ...
... apogee in the orbit of a satellite, the point at which the satellite is farthest from Earth perigee in the orbit of a satellite, the point at which the satellite is closest to Earth • The orbit of the moon around Earth forms an ellipse, the distance between Earth and the moon varies over a month’s ...
pluto and the platypus - facstaff.bucknell.edu
... norm — avoid lonely categories — guiding and to some extent constraining our classificatory practice. We can articulate this norm’s application to the present cases by saying simply that the platypus and echidna alone did not deserve their own class alongside the diverse and populous mammals and tha ...
... norm — avoid lonely categories — guiding and to some extent constraining our classificatory practice. We can articulate this norm’s application to the present cases by saying simply that the platypus and echidna alone did not deserve their own class alongside the diverse and populous mammals and tha ...
The accretion of Uranus and Neptune by collisions among planetary
... Two caveats related to our work need to be stated up-front. First, our study assumes that Jupiter and Saturn are fully formed, while the accretion of these planets is by itself an unsolved problem that we do not address here. This may sound strange. However, there is a consensus that Uranus and Nept ...
... Two caveats related to our work need to be stated up-front. First, our study assumes that Jupiter and Saturn are fully formed, while the accretion of these planets is by itself an unsolved problem that we do not address here. This may sound strange. However, there is a consensus that Uranus and Nept ...
Chaos in the Solar System
... in the asteroid belt. Overlapping resonances account for its Kirkwood gaps and were used to predict and find evidence for very narrow gaps in the outer belt. Further afield, about one new “short-period” comet is discovered each year. They are believed to come from the “Kuiper Belt” (at 40 AU or more ...
... in the asteroid belt. Overlapping resonances account for its Kirkwood gaps and were used to predict and find evidence for very narrow gaps in the outer belt. Further afield, about one new “short-period” comet is discovered each year. They are believed to come from the “Kuiper Belt” (at 40 AU or more ...
Pluto, Charon & the Plutons
... Another unusual object out there that has some similar properties to Pluto and Charon is 1992 QB1, discovered in 1992 (!) by David Jewitt and Jane Luu. It has a diameter of about 200 km, was found 41 AU from Sun, and is reddish colour - which, like Pluto, indicates the existence of frozen methane o ...
... Another unusual object out there that has some similar properties to Pluto and Charon is 1992 QB1, discovered in 1992 (!) by David Jewitt and Jane Luu. It has a diameter of about 200 km, was found 41 AU from Sun, and is reddish colour - which, like Pluto, indicates the existence of frozen methane o ...
A new method to determine the mean density of massive Solar
... The data on the mean densities are available for three satellites of terrestrial planets, for Pluto’s satellite, and for 27 satellites of large planets. Wieczorek et al. (2006) high-accuracy calculated the Moon’s mean density; Andert et al. (2010) produced the mean density estimate for Phobos; Smith ...
... The data on the mean densities are available for three satellites of terrestrial planets, for Pluto’s satellite, and for 27 satellites of large planets. Wieczorek et al. (2006) high-accuracy calculated the Moon’s mean density; Andert et al. (2010) produced the mean density estimate for Phobos; Smith ...
Comprehensive search for natural satellites of Vesta by the Dawn
... Within the Solar System many objects have natural satellites that are bound to the primary body as it also orbits the Sun. Earth’s moon, the Outer Planets’ satellite systems, some Kuiper Belt Objects (KBOs) (Veillet et al., 2002; Noll et al., 2008) and even small near-Earth objects (NEOs) (Margot et ...
... Within the Solar System many objects have natural satellites that are bound to the primary body as it also orbits the Sun. Earth’s moon, the Outer Planets’ satellite systems, some Kuiper Belt Objects (KBOs) (Veillet et al., 2002; Noll et al., 2008) and even small near-Earth objects (NEOs) (Margot et ...
Jupiter Press Kit - New Horizons - The Johns Hopkins University
... New Horizons will help us understand worlds at the edge of our solar system by making the first reconnaissance of Pluto, its large moon, Charon, and its two small moons, Nix and Hydra. Pluto — which makes up a “double planet” with Charon — is the last of the original nine planets in our solar system ...
... New Horizons will help us understand worlds at the edge of our solar system by making the first reconnaissance of Pluto, its large moon, Charon, and its two small moons, Nix and Hydra. Pluto — which makes up a “double planet” with Charon — is the last of the original nine planets in our solar system ...