... 8, ``Celestial Mechanics'', 2002 Investigation of stability of NEAs orbital resonance motions by numerical methods L. E. Bykova Tomsk State University, Tomsk, Russia The problem of orbital stability of resonance Near­Earth asteroids (NEAs) is considered. Most of NEAs have multiple close approaches to the inner ma­ jor planets. ... The technique of the investigation of NEAs orbital stability has been devel­ oped by author on the basis of the construction of possible motion domains (R) of asteroids. ...

... At the summer date, at the chosen time, the Sun is high in the sky. at point S, while at the winter date, it is low in the sky, at point W. The shadow of the gnomon is always in the plane containing the Sun and the points A and B. If AB is a thin line, the shadow will also be a thin line, the intersection of this plane with the base of the sundial. ... Summer or winter, the shadow is therefore along the same line, the intersection of the above plane and the base of the sundial. ...

AMPLITUDE AND PERIOD OF THE DYNAMO WAVE AND PREDICTION OF THE SOLAR CYCLE ISABELLA V. DMITRIEVA, KIRILL M. KUZANYAN and VLADIMIR N. OBRIDKO IZMIRAN, Troitsk, Moscow Region, 142190 Russia (e-mails: bella@izmiran.troitsk.ru; kuzanyan@dnttm.ru; solter@izmiran.troitsk.ru) (Received 5 October 1999; accepted 8 March 2000) Abstract. ... This means that we may try to predict the average amplitude of a given solar cycle by knowing the derivative of the Wolf numbers within previous periods. ...

PENTICTON SOLAR RADIO FLUX VALUES (from SGD Explanation of Data Reports) Daily Solar Flux Values - Penticton -- Daily measurements of the integrated emission from the solar disc at 2800MHz (10.7cm wavelength) have been made by the National Research Council of Canada since 1947. ... The data are tabulated in two forms: the "observed flux" (S), and the "adjusted flux" (Sa). ... The "observed flux" values are useful in ionospheric physics and other terrestrial consequences of solar activity. ...

MAIN CHARACTERISTICS BASIC MODIFICATIONS TEST RESULTS . ... integrated drop tests in order to verify the strength of DM modified shell and equipment attachment points, functional check of new chairs and DM structure, determination of shock impacts onto the crew to verify landing safety; . ... nominal landing with the main parachute system (MPS) - drop #1 took place on December 24, 1998; . ... reduction of shock g-loads values at landing in accordance with decrease of landing speeds. MAIN | ...

GERSHTEIN-ZELDOVICH BOUND AND COSMOLOGICAL RESTRICTIONS ON NEUTRINO MASS A.D. Dolgov 20-24 December, 2004 COSMOLOGY AND ASTROPHYSICS AT HIGH ENERGIES (dedicated to 90th anniversary of Ya. ... Astronomy is sensitive now to m (a few)в0.1 eV. based on combined data on LSS and CMBR. ... Right-handed neutrinos - result in stronger bound. ... 10 Massive neutrinos and CMBR Angular spectrum of CMBR does not feel directly presence of light neutrinos - they are practically relativistic at recombination. ...

Term mixture regarding solar chemical composition refers to relative abundances of heavy elements. Abundances of hydrogen and helium cannot be determined reliably from observations, therefore concentration of these elements are not taken from observational data. ... Table contains only elements which are abundant enough to be included into opacity and equation of state computations. ... First "low-Z abundances" to be published were AGS05. ... 5.5 . ... 6.22 AG89 : Anders E., Grevesse N. 1989. ...

... 2000 August 16 . Unusual Giant Galaxy NGC 1316 . ... Explanation: Can unusual giant galaxy NGC 1316 help calibrate the universe? ... Most recently, NGC 1316 has been monitored to find novae , explosions emanating from white dwarf stars that should have a standard brightness . ... If, however, the stars and white dwarfs that compose NGC 1316 are typical, then the novae observed should be just as bright as novae in other galaxies so that astronomers can use them to compute an accurate distance . ...

... The various Inst :Focus scripts allow you to take a series of exposures over a range of secondary mirror focus values, report the resulting FWHMs and optionally adjust the focus to the estimated best value. ... Slitviewer scripts assume the focus star is on the boresight. ... Focus scripts runs in three phases: . ... The script moves the boresight so the focus star is visible next to the slit, sets the focus to Center Focus, takes an exposure and tries to measure the star's FWHM. ...

... Kremlevskaya 18, Kazan, 420008 Tatarstan, Russia Received October 15, 2005; in final form, February 6, 2006 Abstract--We interpret the observed radial-velocity curve of the optical star in the low-mass X-ray binary 2S 0921­630 using a Roche model, taking into account the X-ray heating of the optical star and screening of X-rays coming from the relativistic object by the accretion disk. ... Mass of the compact object in the 2S 0921-630 X-ray binary for various models, with kx = 10 Model Table 6. ...

... First Estimate of the Value of the Instrumental Polarization of the RadioAstron Space Radio Telescope Using the Results of an Early Scientific Program for Observing Active Galactic Nuclei I. N. Pashchenko, Yu. ... For this, it is necessary to construct a joint distribution of the observational data and unknown parameters, including both instrumental effects and the parameters of the observed source. ... Unknown parameters. ... Thus, the probability model used is based on the linear model of leakage....

THE PARAMETERS INVOLVED IN HAPKE'S MODEL FOR ESTIMATION OF THE COMPOSITION OF THE EJECTA LUNAR TERRAINS. ... In the previous papers we were estimated the surface roughness of the ejecta lunar terrains by means comparison of the local phase function and the average integrated lunar indicatrix. ... The Hapke's theoretical model of the lunar surface reflection. ... For THE PARAMETERS INVOLVED IN HAPKE'S MODEL: S.G. Pugacheva, V.V. Shevchenko a low-albedo lunar surface parameter Bo = 1. ...

... Searching for Far Out and Wandering Worlds . ... The Real Reality Show: Would aliens be anything like us? ... The SETI Institute is after alien signals. Assuming another world is beaming a 1-million-watt radio signal in our direction, how far away can that source be before the signal is lost in intergalactic noise? ... Get instant access to subscriber content on Astronomy.com! ... If you are already registered on Astronomy.com, please log in below. ...

Stellarium 0.12.3 . ... Classes . ... FileљStructure . ... StelToneReproducer Class Reference . ... Set the eye adaptation luminance for the display (and precompute what can be) Usual luminance range is 1-100 cd/m^2 for a CRT screen. ... Set the eye adaptation luminance for the world (and precompute what can be) More... љ . ... Return adapted luminance from world to display. ... Return adapted luminance from world to display with 1 corresponding to full display white. ... xyYToRGB (float *xyY) const . ...