... 8, ``Celestial Mechanics'', 2002 Estimation of masses of some minor planets from observations of perturbed bodies O. M. Kochetova Institute of Applied Astronomy, St. Petersburg, Russia The most straightforward method of mass determination of minor planets is the dynamical one which uses the gravitational perturbations produced by minor planet in the motion of other bodies. ... The values of the masses of minor planets (15), (29) and (65) appear to be rather close in both papers. ...

... This glossary is not meant to be an exhaustive list of techno-definitions. ... Is there a term you don't see here? ... Do you know how to pronounce the CONSTELLATIONS , STARS , or the PLANETS and their MOONS ? ... First Law - the orbit of each planet is an ellipse with the sun at a focus . ... LIGHT BUCKET: A common slang term for a large apertures . ... LIGHT POLLUTION: The illumination of the night sky caused by artificial light sources on the ground (streetlights, billboards, etc.) ...

When using a large number of Virtual Hosts, Apache may run out of available file descriptors (sometimes called file handles if each Virtual Host specifies different log files. ... Unix operating systems limit the number of file descriptors that may be used by a process; the limit is typically 64, and may usually be increased up to a large hard-limit. ... If you system falls into 1 or 2 (above), then increase the file descriptor limit before starting Apache, using a script like #!/bin/sh . ...

... Organisers: Michel Balazard (CNRS, Laboratoire Poncelet) , Xavier Caruso (CNRS, Laboratoire Poncelet) , Michael Tsfasman (CNRS, Laboratoire Poncelet, Institute for Information Transmission Problems) , Alexey Zykin (Laboratoire Poncelet, State University Higher School of Economics) . ... Number theory seminar . ... One of the goals of the semester is to convey the essential unity of the subject, especially to young mathematicians who use number theory in their research. ...

... The performance of arfgen depends mainly on the number of points in the detector map that are enclosed within the said regions. ... At the other extreme, a detector map that is too finely binned would result in a large number of CAL calls and would affect the execution time of the task. ... The current version of this task does not have any feature that varies at scales smaller than 1 arcmin, so the user is recommended to use detector maps with bin sizes around this value. ...

Astronomy Discussion Forums . Forums: . ... How Do You Feel About Numbers? ... Post Message | ... Posted by Richard D. Stafford, Ph.D. on September 15, 2002 16:22:25 UTC . ... Wait - harvey1 - September 15, 2002 - 22:20 UTC . I don't follow you! - doctordick - September 16, 2002 - 14:59 UTC . ... www.astronomy.net . About Astronomy Net | ... Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

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... Numbers of e-prints are undercounted. Number of e-prints are given only for 2000y. Collaboration name . ... N of Russians . Last e-print . N. of e-prints . ... hep-ex/0002048 . ... hep-ex/00004031 . ... hep-ex/0008050 . ... astro-ph/0011313 . ... astro-ph/0003012 . ... astro-ph/0002471 . ... hep-ex/0011029 . ... hep-ex/0012039 . ... hep-ex/0012046 . ... hep-ex/0002026 . ... hep-ex/0002064 . ... astro-ph/0001083 . ... astro-ph/0002054 . ... hep-ex/0012052 . ... astro-ph/0012401 . ...

The small solids. Asteroids or the small planetes . ... The comets. ... Ceneca the Young.Procuring about the nature.63 y. The comet is a celestial body of a great size, but a rare one... transparent. Sometimes there seen a core and the medium forms a kind of a tail, beard or dishevelled looks. ... The core is an ice body - conglomeration of frosted gas and dust. ... The comet state is variable: ones have the con tails, others the dust tails, and the third have both. ... Meteors and meteorites. ...

Download Izmccd (~2.7 MB). ... for 1-5 bytes is number of a numbered minor planet, . ... Positions 1-80 file "mpcreportiz.txt" are similar to positions of file "mpcreport.txt". 83-95 – errors of unit weight, . ... If this tag is " 1 0 " , this record contains results of measurements of an image of object (approximation by "PSF"),  . ... 57-66 – error in X (pixels), for first star in a multicentric image, for subsequent it is error in (distance between first star in the image and this), . ...

... Some existing (e.g., USNO-A1.0) and most of the upcoming catalogs (e.g., GSC-II SDSS , GAIA ) contain data for half a billion up to several billion objects. ... Here we present methods for structuring and searching very large catalogs to provide fast access to the coordinate domain of the parameter space. ... By generalising such methods it is also possible to produce catalog structures and indexes for accessing a multi dimensional parameter space. ...

... The planning and reduction programs are distributed with array sizes set large enough to let most observers work without difficulty. However, you might need to reduce a very large data set, or to deal with a very large number of passbands (9 is the nominal limit). ... The main problem is holding the matrix of normal equations during the iterations; on the other hand, star catalogs can be made quite large without paying much of a price in terms of performance. ...

Next: Ejectors in Massive Binary Previous: Artificial Galaxy: Full Matrix . The first version of the Scenario Machine was aimed especially at the simulation of massive binary star evolution. ... First, there is a large class of intermediate mass binaries (say, consisting initially of 8 + 5 solar masses) that can also produce NS and thus lead to the formation of a bright X-ray source. ... Next: Ejectors in Massive Binary Previous: Artificial Galaxy: Full Matrix Mike E. Prokhorov . ...

Rules for natural satellites observation rough data CONTENT file Version 28.06.2000 /Arlot J.-E., Emelianov N./ ------------------------------------------------------------------ Contents. ... IAU code> - <observatory name> <NL> <NL> Reference. ... planet number>-<planet name>[:<quantity>], <NL> <satellite number> [-<temporary name>] [-<satellite name>]:<quantity> , <NL> ... <satellite number> [-<temporary name>] [-<satellite name>]:<quantity> <NL> reference frame: astrometric | ...

Milky Way X-ray background emission « »: , . ... RXTE , . ... Using near-infrared Galaxy intensity measured with COBE/DIRBE experiment and X-ray data from RXTE and INTEGRAL it was shown that X-ray brightness of the Galactic background emission closely follows its stellar density and can be explained by a cumulative emission of a large number of weak Galactic X-ray sources. ... Map of Galactic background emission in hard X-ray energy band obtained with INTEGRAL observatory. ... 2006, &, 452, 169 ., ...

... Let us first find out which way -- rise in spectral resolution with some loss in the S/N ratio or increase in the S/N ratio with a fixed spectral resolution -- is better for the purpose of reduction of equivalent width determination errors. ... N -- number of counts for 1 ? ... line equivalent width, . ... Thus if the spectral resolution is managed to be increased (i.e. to decrease )without loss in the number of counts falling at 1 ?, the equivalent width measurement error is then proportional to . ...

... adass@eso.org . ... c/o Britt Sj?berg . ST-ECF/ESO . ... European Southern Observatory . ... The ADASS '97 Program Organizing Committee is comprised of the following members: Rudi Albrecht (ST-ECF/ESO), Roger Brissenden (SAO), Tim Cornwell (NRAO), R. Crutcher (Uni. of Illinois), F. Rick Harnden - Chair (SAO), George Jacoby (NOAO), Jonathan McDowell (SAO), Jan Noordam (NFRA), Dick Shaw (STScI), Richard Simon (NRAO), Britt Sj?berg (ST-ECF), Doug Tody (NOAO), and Dave Van Buren (IPAC). ...

Weekly Bulletin on Solar and Geomagnetic Activity Highlights on 04 - 10.11.2013, Forecast on 11 - 18.11.2013, Carrington Rotation 2143 (25,43.10.2013) SUNSPOT-FORMING ACTIVITY OF THE SUN REMAINED AT THE HIGH АND THE MIDDLE LEVELS. ... NEXT WEEK THE LEVEL OF SUNSPOT ACTIVITY IS EXPECTED TO BE THE MID- DLE AND THE LOW LEVELS. ... BY SOHO AND STEREO CORONOGRAPHS DATA THERE WERE OBSERVED 46 CME FROM WHICH 2 WERE THE "PARTIAL HALO III" TYPE AND 6 - "PARTIAL HALO II". ...

... of some asteroids are known with insufficient accuracy, so in reality the described line indicates a wider region. h m ° ° ° ° 2016 April 1 12 21.3 117.4 44.3 58 59 140 Siwa; 14.4;109.8 km; 3.8; 8.5s 12 22.3 127.2 41.9 72 53 U2 040170481 ; 10.6; 6h55m37.731s;+23°34'50.61 2016 April 1 17 11.3 43.9 43.4 39 67 1481 Tubingia; 16.0; 33.3 km; 4.0; 3.5s 17 12.3 49.6 40.8 53 66 U2 040343475 ; 12.0 ; 7h43m34.252s;+24°00'23.04 2016 ...

... General astronomy . ... PHYSICAL CONSTANTS.. ... Nobel Laureates in Physics 1901-2002 . ... Lectures Astronomy-161 "Solar System" (Also it contains info about History of Astronomy) . ... The History of Science . ... College-Level Astronomy Courses - at American, Australian Universities and Colleges . ... Messier: . ... Science . ... Scientific American . ... JOURNAL OF COMPUTATIONAL PHYSICS . ... Scientific Journals . ... American Physical Society Journals: Physical Review, Review of Modern Physics ...