I/146 Positions and Proper Motions (Roeser+ 1988) ================================================================================ Catalogue of Positions and Proper Motions Roeser S., Bastian U. =1988A .. ... 449R ================================================================================ ADC_Keywords: Positional data; Proper motions Description: PPM North gives J2000 positions and proper motions of 181,731 stars north of -2.5 degrees declination. ... The mean epoch is near 1931. ...

HIGH ENERGY SOURCES OBSERVED WITH OMC D. Rґ isquez1 , A. Domingo1 , J.M. Mas-Hesse2 , and E. Kuulkers3 1 Laboratorio de Astrofґ isica Espacial y Fґ isica Fundamental (LAEFF-INTA), P.O.Box 50727, E-28080, Madrid, Spain; risquez@laeff.inta.es, albert@laeff.inta.es 2 Centro de Astrobiologґ (CSIC-INTA), P.O.Box 50727, E-28080, Madrid, Spain; mm@laeff.inta.es ia 3 ISOC, ESA/ESAC, Urb. ... In these cases there are many optical sources inside the high energy source error circle (sometimes up to hundreds). ...

... Make up at least 5 data points, each with an x value, a y value and an uncertainty in the y value. ... Right-click on the top of the column containing the x-data and drag your mouse to the bottom of the column to select it. ... You must first enter the Positive Error Value (the `up error bars') ­ click at top of the column of y error values and drag down to select all of the values (in the above screenshot the y error values are in the column labeled ). ... Let's try fitting a straight line. ...

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Most radio and modem clocks used for a primary (stratum-1) NTP server utilize serial ports operating at speeds of 9600 baud or greater. ... In order to reduce these errors, a set of special line disciplines and stream modules can be configured in the Unix kernel. ... Note that not all Unix kernels support line disciplines and of those that do, not all support System V streams. ... There are two line disciplines and a special streams module included in the distribution. ...

... PUL2 catalog contains original absolute proper motions of 59646 stars in 149 fields with galaxies. ... Mean errors of relative proper motions in PUL2 catalog is 5.5 mas/year. ... The external mean error of one relative proper motion of a bright star of PUL2 catalog is 9 mas/year for both of coordinates. ... After issue of UCAC2 catalog, we decided to improve accuracy of proper motions, using Pul-3 coordinates (of 1950s) as the first epoch, and UCAC2 coordinates as the second epoch. ...

J/AstL/vol/page SAI Open Clusters Catalog (Glushkova+, 2009) ================================================================================ Automated search for star clusters in large multiband surveys. ... Color excesses E(B-V), distance moduli and ages were determined for 141 new and 27 known, but poorly studied clusters. We present the Sternberg Astronomical Institute Open Clusters Catalog (SAI OCL Catalog) of coordinates, diameters and main physical parameters of these clusters. ...

I/199 Lick Northern Proper Motion Program: NPM1 Catalog (Klemola+ 1987) =============================================================================== = Lick Northern Proper Motion Program: NPM1 Catalog Klemola A.R., Hanson R.B., Jones B.F. <Astron. ... Positions are given for equinox B1950 and computed epoch 1950. ... Other data given for each star are: the original mean epoch, a stellar class code, the number of NPM fields measured, and discrepancy flags for position, proper motion, and photometry. ...

Astronomy Picture of the Day . A Halo Around the Moon . ... 7.12.2008 . ... Credit Copyright: Juan Carlos Casado Explanation: Have you ever seen a halo around the Moon? ... A similar Sun Halo may be visible during the day. ... 2007 2008 . ... NASA Web Site Statements, Warnings, and Disclaimers . ... U. Based on Astronomy Picture Of the Day . Publications with keywords: Moon - halo . Publications with words: Moon - halo . ... Apollo 16: Diving on the Moon . ... Super Moon vs Micro Moon . ...