... Format of the orbital elements | Estimation of the extrapolation errors | Version 1" of the orbital elements collection, determined by KIAM during flight and used for operations planning . Version 2" of the of the orbital elements collection, modified by IKI during flight and recommended for the orbital calculations during scientific data processing . ... Three kinds of the INTERBALL Auroral probe (IB_AUR) orbital elements' collections are presented here. ... IKI RAN | SSC IKI RAN | ...

... Abstract Determine the state (position, velocity) of an orbiting body from a set of elliptic, hyperbolic, or parabolic orbital elements. ... The difference between this state and the state predicted by the nominal orbit at the same epoch can be computed as follows. conics_c ( elts, later, nominal ); vsubg_c ( nominal, state, 6, diff ); printf( "Perturbation in x, dx/dt = %f %f", diff[0], diff[3] ); printf( " y, dy/dt = %f %f", diff[1], diff[4] ); printf( " z, dz/dt = %f %f", diff[2], diff[5] ); . ...

... They were determined as a result of orbit improving on the base of all kinds of optical observations available in the catalog of observations of the Minor Planet Center on March 16, 2014 (radar observations have not been used at this stage). ... As the MPC orbits do not all were improved simultaneously with EMP orbits, only 383866 sets of elements were used for data comparison (for selected sets of elements process of improvement had started with the use of the same observations). ...

. Computer Ephemeris. Elements of osculating planetary orbits. Explanations. Each row contains at 0h of Time Dynamical Terrestrial of specified date in system of mean equator and ecliptic J2000.0 the ecliptic osculating elements of heliocentric orbit: inclination of orbital plane (degrees), longitude of ascending node (degrees), argument of perigelion (degrees), semimajor axis (astronomical units), mean motion (degrees per day), eccentricity (dimensionless), mean anomaly (degrees).

An Ancient Universe: How Astronomers Know the Vast Scale of Cosmic Time . ... d) The Age of the Chemical Elements . ... Some isotopes (forms of the element with different numbers of neutrons in the nucleus) of these elements are radioactive; they change into other isotopes at a rate that can be measured accurately in the laboratory. ... The Ancient Universe - The Age of the Expanding Universe - The Age of the Oldest Stars - The Age of Light From Distant Galaxies - The Age of the Chemical Elements | ...

Radiative losses have been determined by using the Arcetri Code line emissivities for each element calculated adopting a plasma electron density of 10 10 cm -3 . Each emissivity line is structured using the following format: An example from the Mg file (Phot cm 3 s -1 ) is given below: . ... Mail comments regarding interface to landi@poppeo.nrl.navy.mil Mail comments regarding spectrum data to mlandini@arcetri.astro.it, landi@poppeo.nrl.navy.mil ...

Next: Ground calibration Up: RGS_EFFAREACORR Previous: Purpose Contents . Effective-area correction factors and rectification factors are tabulated against energy in the EFFAREACORR and RECTIFICATION extensions, repsectively. The relatively small number of elements in the tabulation compared with the number of RGS spectra elements has been determined by the smoothness of the functions concerned. ... Michael Smith 2011-09-20 ...