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)
5/27 Mars is 5.3 degrees north of the Mo ...
... 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
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 ...
Absolute Flux Calibration
... Flux Calibrators: Satellites
- They are quite compact (hence better
for extended configurations and/or higher
frequencies than planets) and still
sufficiently bright (>[email protected]
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) + ...
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 ...
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 ...
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 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 ...
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) ...
... 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 ...
Solar system paper
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 ...
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, ...
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
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 ...
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 ...
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 ...
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 ...
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 ...
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 ...
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 ...
Naming of moons
The naming of moons has been the responsibility of the International Astronomical Union's committee for Planetary System Nomenclature since 1973. That committee is known today as the Working Group for Planetary System Nomenclature (WGPSN).Prior to its formation, the names of satellites have had varying histories. The choice of names is often determined by a satellite's discoverer; however, historically some satellites were not given names for many years after their discovery; for instance, Titan was discovered by Huygens in 1655, but was not named until 1847, almost two centuries later.Before the IAU assumed responsibility for astronomical nomenclature, only twenty-five satellites had been given names that were in wide use and are still used. Since then, names have been given to 129 additional satellites: 45 satellites of Jupiter, 43 of Saturn, 22 of Uranus, 11 of Neptune, 5 of Pluto, 1 of Eris, and 2 of Haumea. The number will continue to rise as current satellite discoveries are documented and new satellites are discovered.At the IAU General Assembly in July 2004, the WGPSN suggested it may become advisable to not name small satellites, as CCD technology makes it possible to discover satellites as small as 1 km in diameter. To date, however, names have been applied to all moons discovered, regardless of size.