... 87e24 5.24 .65 -4.4 -243 Earth 6378 5.97e24 5.52 .37 - 0.99 Mars 3397 6.42e23 3.93 .15 -2.0 1.03 Jupiter 71492 1.90e27 1.33 .52 - 2.7 0.41 Saturn 60268 5.68e26 0.69 .47 0.7 0.45 Uranus 25559 8.68e25 1.32 .51 5.5 -0.72 Neptune 24766 1.02e26 1.64 .41 7.8 0.67 Pluto 1137 1.27e22 2.06 .55 13.6 -6.39 ( z ... .12 -12.7 S Phobos 11 1.08e16 1.9 .06 11.3 S 13.5 x 10.8 x 9.4 Deimos 6 1.80e15 1.8 .07 12.3 S 7.5 x 6.1 x 5.5 Metis 20 9.56e16 2.8 .05 17.5 ... 72 x 43 x 32 Pandora 42 2.20e17 0.7 .9 16.5 ? ...

Computer Ephemeris. Ephemeris for physical observations of the planets. Explanations. Each row of the table contains for date specified at 0h of Time Terrestrial Dynamical: . ... position angle of axis of planetary rotation (degrees) - 'P', . ... illumanated part of the disk - k, . ... position angle of disk point with minimal illumination (degrees), . longitude of central meridian of the disk (degrees) - 'merid1' - system I and so... phase correction (degrees). ...

. Chairs . Teachers . Postgraduate Students . Undergraduate Students . Courses . Head: A.M.Cherepaschuk . Vice-Head: A.C.Rastorguev . Webmaster: Yuri V. Pakhomov . pakhomov@sai.msu.su

... Once a star loses its disk, it appears to be free to spin--up. ... By the time a star reaches the 1 day periods seen in some stars in Orion OB1a and b it must have lost their disk a relatively long time ago, and have spent only 5% of their post--birthline, PMS lifetime with a disk. ... These stars are roughly 10 Myr old. ... The most rapid rotation period among the Orion OB1a stars is about 0.7 days, which means that such a star would have lost its disk at an age of no older than 250,000 years. ...

... 8, ``Celestial Mechanics'', 2002 Canon of solar eclipses in Russia for the interval 1000--2050 M. V. Lukashova, L. I. Rumjantseva Institute of Applied Astronomy, St. Petersburg, Russia Solar eclipses are quite rare events. ... The Canon contains the basic data about the solar eclipses observed in ter­ ritory of the former USSR (in boundaries of 1990) from 1000 to 2050 with the magnitude of phase exceeding 0.1. ... Beginning from 1887 several canons of solar eclipses were published. ...

TUI supports the following offsets: . Object Arc offset by a given amount on the sky (i.e. along the arc of a great circle). ... Arc offsets are useful for moving a different portion of your object or a different nearby object onto the boresight . ... Object Arc XY this is identical to an Object offset except that it has been rotated to align along the instrument x-y axes. ... This is just like the Calibration XY offset, except that it is typically cleared when you slew to a new object. ...

... 1 erg = 0.1 microjoules . 1 Jansky = 10**-26 watts per metre square per hertz . 1 Angstrom = 0.1 nanometres . ... 1 Astronomical unit = 1.4960 times 10**11 m . ... Mass of Sun = 1.989 times 10**30 kg . ... Mass of the Earth = 5.976 times 10**24 kg . Mass of Jupiter = 318 times mass of Earth . Solar constant = 1.37 kW per metre . c= 3 times 10**8 metres per second . ... Mass of Proton = 1836.1 times mass of electron . ... Stefan Boltzmann constant = 5.67 times 10**-8 W m**-2 K**-4 . ...

Conserved quantities. Energy, momentum, & angular momentum. ... To start with, let us look at a plot of Specific Angular Momentum versus Specific Energy for every historical comet apparition up to 1995. ... Where do asteroids fit in? ... Why do the points of one cluster group around a vertical line? ... h = angular momentum per unit mass of an orbiting body. ... Lines of constant angular momentum are "1/X" functions on a q vs (1+e) graph, but a little more complex if drawn on the above graph. ...

... Suppose that an accreting plasma penetrates the light cylinder and is stopped by the magnetic field   at a certain distance given by the balance between the static magnetic field pressure and the plasma pressure. ... Otherwise, a centrifugal barrier emerges and the rapidly rotating magnetic field impedes the accretion of matter (Schwartzman, 1970a[ 173 ]; Pringle and Rees, 1972[ 164 ]; Davidson and Ostriker, 1973[ 38 ]; Lamb et al. ... The corotation radius is thus defined as . ...

... The Rotating Jets of Comet Hyakutake . ... At this time, the comet's dust and ion tail will be at their greatest physical length. ... Although much of this material ends up in the tail , some interesting features can be seen close to the comet's three kilometer nucleus . Because the comet's nucleus rotates, the jets can be seen to form arcs around the comet's center resembling a pinwheel. The above photograph, taken April 8, shows two expanding arcs of cometary material and two source jets. ...

... April 14, 1996 . The Rotating Jets of Comet Hyakutake . ... At this time, the comet's dust and ion tail will be at their greatest physical length. ... Although much of this material ends up in the tail , some interesting features can be seen close to the comet's three kilometer nucleus . Because the comet's nucleus rotates, the jets can be seen to form arcs around the comet's center resembling a pinwheel. ... The inner arc ends at the brightest of the Comet Hyakutake's many jets. ...

... The aim of this workshop is to get together theorists, who develop models leading to such cosmic polarization rotation (CPR), and experimentalists, who search for CPR using a variety of complementary methods, in order to discuss current results and future directions. The workshop will take place at the Villa Il Gioiello on the Arcetri hill near Florence, where Galileo, the first scientists to test the equivalence principle, spent the last 10 years of his life. ... Home . ... cpr@arcetri.astro.it . ...

Function: GETROT Purpose: Returns the rotation angle of a subset. Category: PHYSICAL COORDINATES File: cotrans.c Author: K.G. Begeman Use: INTEGER GETROT ( SET , Input character SUBSET , Input integer CROTA ) Output double precision GETROT Returns: -4 Internal error -3 No sky coordinates found in set. 2 Error in subset dimensions. 1 Set does not exist. 0 No error SET Name of data set. SUBSET Subset coordinate word. CROTA The rotation angle of the subset. ...

... For spectra a transformation from wavelength to frequency is used to identify spectral regions which follow a power law. This transformation is given by . ... Whereas the transforms mentioned above only perform a non--linear rebinning of the data, the Fourier transform converts a spatial image into the frequency domain. ... As an example of using Fourier transforms to extract information from a frame, an azimuthal intensity profile of the spiral galaxy A0526--16 is shown in Figure . ...

... RECOMMENDED VALUES OF PHYSICAL CONSTANTS AND CONVERSION FACTORS. ... This reference must be included when these constants are used in a context where their full accuracy is important. ... elementary charge (of proton) . ... gravitational constant . ... unified atomic mass constant . ... of electron . ... of proton . ... Planck constant . ... Rydberg constant, m 0 2 m e e 4 c 3 /8h 3 . ... fine structure constant, m 0 e 2 c/2h . ... Bohr radius, h 2 ( pm 0 c 2 m e e 2 ) . ... Bohr magneton, e h /2m e...

... If Earth's sphericity is of prime importance as the ultimate cause of weather and climate, Earth's *ROTATION* is almost as important, although the atmosphere would still exhibit motions even if it wouldn't rotate. ... Take any one of those two conditions away,and these waves become mathematically impossible. ... The Coriolis force is the force directly caused by Earth's rotation, and should be mentioned when going into a more detailed description of the physics of Rossby waves. ...

... Lesson plan (frames) . ... 22b. Relativity . ... By Newton's laws, two frames of reference moving with constant velocity relative to each other observe exactly the same physical behavior. There exists no way to tell, which of them is moving and which one is at rest: there is no "absolute rest frame" and no "absolute (constant) velocity. ... But for a while it seemed that by certain subtle effects, electromagnetic forces could distinguish whether a frame was in motion of not. ...

... R2397 Date Received: 2008-Feb-05 16:34:37 Technical Page Proposal Type: General Category: Observation Category: Total Time Requested: Minimum Useful Time: Prop osal Title: ABSTRACT: We propose delay-Doppler radar imaging, physical modeling, satellite searches, and orbital refinement of near-Earth asteroids 1998 CS1, 1998 UT18, 2004 LV3, 2004 XL14, and 2005 GN59, which are strong targets during October 2008-January 2009. ...

adjustable array . The array in a subprogram has a variable dimension just as in Fortran 77 through that both the array name and the dimension (all dimensions) are dummy arguments. ... Array sections can be used here instead of arrays. array function . ... An array in a subprogram which is not local and has a certain data type and a certain rank. ... Each Fortran program has to consist of exactly one main program and and any number of subroutines, functions, modules and BLOCK DATA program units. ...