orbital resonances and chaos in the solar system
... plane of the orbit has inclination i with respect to the fixed reference plane, and intersects the latter along the line of nodes, NN 0 , where ON defines the ascending node. The long axis of the ellipse is along P P 0 , where OP defines the perihelion (or periapse); the argument of perihelion ω is ...
... plane of the orbit has inclination i with respect to the fixed reference plane, and intersects the latter along the line of nodes, NN 0 , where ON defines the ascending node. The long axis of the ellipse is along P P 0 , where OP defines the perihelion (or periapse); the argument of perihelion ω is ...
8-4.9 - S2TEM Centers SC
... 2. Ask them to share what they know about it. 3. Make sure they are aware that a galaxy is a very large collection of stars, dust, and gas held together by the force of gravity. They should also be aware that not all galaxies look the same. 4. Provide students with copies of the activity sheet and t ...
... 2. Ask them to share what they know about it. 3. Make sure they are aware that a galaxy is a very large collection of stars, dust, and gas held together by the force of gravity. They should also be aware that not all galaxies look the same. 4. Provide students with copies of the activity sheet and t ...
Quantifying the Uncertainty in the Orbits of Extrasolar Planets
... It is also more difficult to obtain precise orbital elements for planets with large orbital periods. While early planet candidates were routinely observed for multiple periods before publication, recently planet candidates have been published when observations span only a single orbital period. Thus ...
... It is also more difficult to obtain precise orbital elements for planets with large orbital periods. While early planet candidates were routinely observed for multiple periods before publication, recently planet candidates have been published when observations span only a single orbital period. Thus ...
swiss ephemeris - Welcome, but
... 6.1.13. Krusinski system, also known as Amphora/Pisa system ............................................................... 35 6.2. Vertex, Antivertex, East Point and Equatorial Ascendant, etc. .............................................................. 35 6.3. House cusps beyond the polar circle ...
... 6.1.13. Krusinski system, also known as Amphora/Pisa system ............................................................... 35 6.2. Vertex, Antivertex, East Point and Equatorial Ascendant, etc. .............................................................. 35 6.3. House cusps beyond the polar circle ...
A Detailed Derivation of the Radial Velocity Equation
... Of the over 300 extrasolar planets discovered to date, the vast majority have been found using the RADIAL VELOCITY METHOD (also known as DOPPLER SPECTROSCOPY or the DOPPLER METHOD). The purpose of this paper is to derive the theoretical equation that is asso ...
... Of the over 300 extrasolar planets discovered to date, the vast majority have been found using the RADIAL VELOCITY METHOD (also known as DOPPLER SPECTROSCOPY or the DOPPLER METHOD). The purpose of this paper is to derive the theoretical equation that is asso ...
Stellar Metamorphosis as Alternative to Nebular Hypothesis
... of tons of star shrapnel known as asteroids, meteorites and small moon-like objects that are undifferentiated. [26] Therefore TYC 8241 2652 is not evidence of star/planet formation but star/planet destruction caused by objects clearing their path for more stable orbits. [27] Mainstream has this proc ...
... of tons of star shrapnel known as asteroids, meteorites and small moon-like objects that are undifferentiated. [26] Therefore TYC 8241 2652 is not evidence of star/planet formation but star/planet destruction caused by objects clearing their path for more stable orbits. [27] Mainstream has this proc ...
Effect of the stellar spin history on the tidal evolution of close
... and very low-mass stars (0.1 M ). We tested two stellar spin evolution profiles, one with fast initial rotation (1.2 day rotation period) and one with slow initial rotation (8 day period). We tested the effect of varying the stellar and planetary dissipations, and the planet’s mass and initial orbit ...
... and very low-mass stars (0.1 M ). We tested two stellar spin evolution profiles, one with fast initial rotation (1.2 day rotation period) and one with slow initial rotation (8 day period). We tested the effect of varying the stellar and planetary dissipations, and the planet’s mass and initial orbit ...
Astronomical Facts `n Stuff
... corresponding particle (proton, neutron, etc.) of the same mass of the ordinary type of matter from which the solar system is made. Particles of antimatter are known to exist, but it is not known why matter is dominant in this region of the universe or whether regions exist in which antimatter is co ...
... corresponding particle (proton, neutron, etc.) of the same mass of the ordinary type of matter from which the solar system is made. Particles of antimatter are known to exist, but it is not known why matter is dominant in this region of the universe or whether regions exist in which antimatter is co ...
Constraining tidal dissipation in F-type main
... where γR 0.22 R is the gyration radius of the star (Siess et al. 2000), Qs its modified tidal quality factor, here assumed to be Qs = 106 , a the semimajor axis of the orbit, and G the gravitation constant (see Mardling & Lin 2002). Equation (2) is valid for circular orbits and when the spin axi ...
... where γR 0.22 R is the gyration radius of the star (Siess et al. 2000), Qs its modified tidal quality factor, here assumed to be Qs = 106 , a the semimajor axis of the orbit, and G the gravitation constant (see Mardling & Lin 2002). Equation (2) is valid for circular orbits and when the spin axi ...
Discovery and spectroscopy of the young Jovian planet
... MJ) and at large separations (9-650 AU) from their host star, compared to our solar system. Photometry and spectroscopy probe the atmospheres of these young Jovians, providing hints about their formation. Several unexpected results have emerged. The near-infrared colors of these planets are mostly r ...
... MJ) and at large separations (9-650 AU) from their host star, compared to our solar system. Photometry and spectroscopy probe the atmospheres of these young Jovians, providing hints about their formation. Several unexpected results have emerged. The near-infrared colors of these planets are mostly r ...
Galileo`s miraculous year: 1609 and the revolutionary telescope
... reading of mathematics in the study of Padua, but to write in such poetical terms. The variations of the visible phase of having decided to present to Your Highness a telescope of Venus and the correlations with the observed size of the (“Occhiale”) that will be a great help in maritime and land pla ...
... reading of mathematics in the study of Padua, but to write in such poetical terms. The variations of the visible phase of having decided to present to Your Highness a telescope of Venus and the correlations with the observed size of the (“Occhiale”) that will be a great help in maritime and land pla ...
Chapter 1: The Sun - New Hampshire Public Television
... In 1843, the German astronomer Heinrich Schwabe discovered that the number of sunspots visible on the Sun's face periodically varies. At a maximum in the cycle, over 100 sunspots may be present, but towards solar minimum the number falls considerably. During this period there may be several weeks wi ...
... In 1843, the German astronomer Heinrich Schwabe discovered that the number of sunspots visible on the Sun's face periodically varies. At a maximum in the cycle, over 100 sunspots may be present, but towards solar minimum the number falls considerably. During this period there may be several weeks wi ...
Laboratory A
... 10. On the scale drawing of the NPOI site, 1 in is 140 ft. What is this in centimeters to meters? 2.54 cm to 42.672 m, or 1 cm to 16.8 m 11. On the scale drawing of the NPOI site, 1 in is 140 ft. What are the dimensions of the Beam Combing Building on the drawing in inches? length = 1,125/3,556 in, ...
... 10. On the scale drawing of the NPOI site, 1 in is 140 ft. What is this in centimeters to meters? 2.54 cm to 42.672 m, or 1 cm to 16.8 m 11. On the scale drawing of the NPOI site, 1 in is 140 ft. What are the dimensions of the Beam Combing Building on the drawing in inches? length = 1,125/3,556 in, ...
Unit 1 test review and answer key 16
... 47. A natural object observed in space such as a planet or a star is called a ____________________. 48. After Aristotle observed that the star patterns in the night sky did not change, he concluded that Earth was ____________________. 49. Celestial bodies include the Sun, Moon, stars, asteroids, com ...
... 47. A natural object observed in space such as a planet or a star is called a ____________________. 48. After Aristotle observed that the star patterns in the night sky did not change, he concluded that Earth was ____________________. 49. Celestial bodies include the Sun, Moon, stars, asteroids, com ...
Uranus - Stockton University
... The surface is pock-marked with craters, but the most outstanding features are long rift valleys stretching across the entire surface. Canyons much like the ones on Mars appear in the pictures. The canyon floors appear as though they have been smoothed by a fluid. ...
... The surface is pock-marked with craters, but the most outstanding features are long rift valleys stretching across the entire surface. Canyons much like the ones on Mars appear in the pictures. The canyon floors appear as though they have been smoothed by a fluid. ...
Planet Formation in the Outer Solar System
... point to test these and other planet formation models (Hoyle 1946; Weidenschilling 1977a; Hayashi 1981; Lissauer 1987; Bailey 1994). The minimum mass is based on the near equality between the measured elemental compositions of the Earth, Moon, and meteorites (Anders & Grevesse 1989 and references th ...
... point to test these and other planet formation models (Hoyle 1946; Weidenschilling 1977a; Hayashi 1981; Lissauer 1987; Bailey 1994). The minimum mass is based on the near equality between the measured elemental compositions of the Earth, Moon, and meteorites (Anders & Grevesse 1989 and references th ...
Preprint - Lunar and Planetary Laboratory
... results for different migration rates prevent a clear assessment of the general survivability of Neptune Trojans during primordial radial migration of the four giant planets. In addition, Gomes did not seek to identify the mechanism by which Neptune Trojans are destabilized during planetary migratio ...
... results for different migration rates prevent a clear assessment of the general survivability of Neptune Trojans during primordial radial migration of the four giant planets. In addition, Gomes did not seek to identify the mechanism by which Neptune Trojans are destabilized during planetary migratio ...
The Habitability of Proxima Centauri b I: Evolutionary Scenarios
... and NLTE effects, which make it extraordinarily difficult to identify elemental abundances; hence its composition is far more difficult to measure than for G and K dwarfs like α Cen A and B (Johnson & Apps 2009). Recently, Hinkel & Kane (2013) completed a reanalysis of published compositional studie ...
... and NLTE effects, which make it extraordinarily difficult to identify elemental abundances; hence its composition is far more difficult to measure than for G and K dwarfs like α Cen A and B (Johnson & Apps 2009). Recently, Hinkel & Kane (2013) completed a reanalysis of published compositional studie ...
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 ...
Planets beyond Neptune
Following the discovery of the planet Neptune in 1846, there was considerable speculation that another planet might exist beyond its orbit. The search began in the mid-19th century and culminated at the start of the 20th with Percival Lowell's quest for Planet X. Lowell proposed the Planet X hypothesis to explain apparent discrepancies in the orbits of the giant planets, particularly Uranus and Neptune, speculating that the gravity of a large unseen ninth planet could have perturbed Uranus enough to account for the irregularities.Clyde Tombaugh's discovery of Pluto in 1930 appeared to validate Lowell's hypothesis, and Pluto was officially named the ninth planet. In 1978, Pluto was conclusively determined to be too small for its gravity to affect the giant planets, resulting in a brief search for a tenth planet. The search was largely abandoned in the early 1990s, when a study of measurements made by the Voyager 2 spacecraft found that the irregularities observed in Uranus's orbit were due to a slight overestimation of Neptune's mass. After 1992, the discovery of numerous small icy objects with similar or even wider orbits than Pluto led to a debate over whether Pluto should remain a planet, or whether it and its neighbours should, like the asteroids, be given their own separate classification. Although a number of the larger members of this group were initially described as planets, in 2006 the International Astronomical Union reclassified Pluto and its largest neighbours as dwarf planets, leaving Neptune the farthest known planet in the Solar System.Today, the astronomical community widely agrees that Planet X, as originally envisioned, does not exist, but the concept of Planet X has been revived by a number of astronomers to explain other anomalies observed in the outer Solar System. In popular culture, and even among some astronomers, Planet X has become a stand-in term for any undiscovered planet in the outer Solar System, regardless of its relationship to Lowell's hypothesis. Other trans-Neptunian planets have also been suggested, based on different evidence. As of March 2014, observations with the WISE telescope have ruled out the possibility of a Saturn-sized object out to 10,000 AU, and a Jupiter-sized or larger object out to 26,000 AU.