In the Table below the masses of some asteroids which were determined during the last years are listed. ... The listed values were determined from observations of many test bodies by the weighted least square fit for one perturbing mass and corrections to the orbit elements of all used test bodies. ... based on the observations of 98 asteroids (including 50278) with the values of standard error of mass determination less than 3.0 10 -11 M Sun . ... Mass . ... 3) Mass 121 : 0.74 x 10 -11 M Sun ; . ...

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• (Untitled)
• EPHEMERIDIES OF MINOR PLANETS (EMP)

... These are just the bare bones--just three basic ideas and rules for handling relations ("equations") involving unknown quantities whose values you are trying to find. In most calculations you try to find a number . ... To get a solution, one must replace the given equation (or equations) with others, containing the same information but cleaner in appearance. ... If you have an equation and modify both its sides in exactly the same way, what you get is also a valid equation. ...

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• STDA files
• Identities
• ASCII files description

... 1.7 GSC 084 Pulkovo Obs., 0.33 15 x 15' 1.0" 7 34 0.179 0.307 Normal Asgr. 3.0 UCAC 118 Slovakia, 0.57 14 x 10' 1.7" 3 12 0.090 0.145 Modra 3.3 USNO 127 Germany, 0.19 30 x 20' 2.4" 3 15 0.151 0.087 Bornheim 0.8 GSC 168 34 200 0.282 0.315 291 USA,Kitt Peak, 1.8 390 x 30' 1.0" 1 5 0.143 0.144 Spacewatch II 4.7 USNO 300 Japan, 0.5 78 x 78' 2.3" 7 36 0.420 0.447 Bisei Center 1.3 ACT 461 Hungary, JATE 0.60 28 x 19' 1.1" 6 22 0.124 0.153 Asteroid Surv. ... Polynesia 1.0 UCAC F85 Tiki Obs., ...

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... GCR and SCR are primary cosmic rays. 10-15 years after the discovery of cosmic radiation (1919) there emerged two main avenues of investigation in the physics of cosmic rays (CR): 1) nuclear - elucidation of the origin of elementary particles and nuclear interactions; and 2) astrophysical (space physics) - solution of the problem related to the origin and variations (changes in intensity) of CR. ... Besides, the CR flux in interplanetary space is, strictly speaking, not isotropic. ...

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. Number of Supernovae discovered by amateurs. In this page the amateurs' contribution in supernovae discoveries is shown. The SN 1957B was the first supernova discovered by an amateur astronomer: Giuliano Romano. He discovered it with his own 0.40 mt. telescope at Treviso (Italy), then later he become a professional. This graph is updated to SN 2000ek . Yellow values are SNe discovered by amateurs, red ones the total number of SNe discovered for each year .

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• ntpdate - set the date and time via NTP
• JavaScript Random Number Tester
• The Sparkle Plug-In: The Sparkle Dialog Box

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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• A Number Is A Very Specific Thing - an Astronomy Net Exploration Forum Message
• The Telescope's F/number - an Astronomy Net General Forum Message
• Back To Basics - an Astronomy Net Exploration Forum Message

... Arithmetic Functions . Random Numbers . String Conversion . Searching and Sorting . ... There are 4 basic integer functions: . int abs(int number); long int labs(long int number); div_t div(int numerator,int denominator); ldiv_t ldiv(long int numerator, long int denominator); . ... In practice no functions produce truly random data -- they produce pseudo-random numbers. ... The stdlib.h provides 2 useful functions to perform general searching and sorting of data on any type. ...

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• LWN: Driver porting: dealing with interrupts
• Conditionals
• Time Functions

... CREATED are counted): we count executed AND created ABs, to include the science associations . ... number and size of raw and product CALIB files (if from executed ABs) . number of ABs (created and executed) . ... Raw files: Number of raw frames are extracted from executed ABs which effectively means that only raw frames are counted which have been processed. ... Every raw SCIENCE frame from RAWFILE section in an executed AB is counted (before 2011-10-01: every associated and packed raw file) . ...

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• NPOI Lab
• OYSTER Lab
• cascadeMonitor

... To save time, I will only provide ephemerides in 2000 coordinates. ... Note: most the orbital elements used to create these ephemerides were obtained from the International Astronomical Union Circulars (IAUCs), Minor Planet Circulars (MPCs) or the ICQ Comet Handbook. ... The following 1-day ephemeris (March 1, 1997 - October 1, 1997) is from Donald Yeomans of JPL and is based on Reference Orbit #55 (March 4, 1997). 2000 coordinates (March - September, 1997) [3/4/97] . ... Epoch: 1997 Feb. 1.0 . ...

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• Rules and regulations for a participant
• XVI International Astronomy Olympiad, applications
• The XVIII International Astronomy Olympiad, ages table

... In order to compare the number of different evolutionary stages obtained and X-ray luminosity of the chosen X-ray sources with the observed galactic values we use the sum of C/O+O/C , where C and O are the calculated and observed values of a given binary type, respectively. If we make comparison for a number of different binary species (for example, we compare the number of CV, number of X-ray pulsars, ? total X-ray luminosity of LMXB, etc.), we write this criterion in the form: . ...

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• Test of the Initial Mass-Ratio Distribution
• Binary Radiopulsars with Black Holes

ARCSAT ID NUMBER: AS07 DESCRIPTIVE TITLE: Time Domain Studies of Transients and Variable Stars PI: Guy Stringfellow OBSERVER(S): Guy Stringfellow, CU undergrads TBD UNCERTIFIED ... CU undergrads COLLABORATORS: CONTACT INFORMATION: Guy.Stringfellow@colorado.edu 303-506-3160 cell NUMBER OF WEEKS REQUESTED: 3 TIME REQUESTED: Requires Dark time and time cadence ~monthly Run 1: July 13 (alternate: ... Based on our previous ARCSAT observations, we now have an 11-tile grid covering M31. ...

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• lsst.tcc: tcc.base.fieldWrapper Namespace Reference
• what to do with the trace data
• Guider Mechanical Commands

... Emelianov N. V. (2009) Mutual occultations and eclipses of the Galilean satellites of Jupiter in 2002-2003. Final astrometric results. ... The second group of the data see in the following item jg0028 of the NSDC. ... X coordinate in arcseconds (topocentric for mutual occultation or heliocentric for mutual eclipse) 10. Y coordinate in arcseconds (topocentric for mutual occultation or heliocentric for mutual eclipse) 11. sigma of X in arcseconds 12. sigma of Y in arcseconds 13. ...

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• jg0028
• jo0017
• ji0012

Statistics of sunspot activity . The sunspot indices . ... Visual indices of solar activity . ... n - number of spot groups . A - Waldmeier class of unipolar spot groups without penumbra . B - class of bipolar spot groups without penumbra . C - class of bipolar spot groups with one penumbra pole . D - class of small bipolar spot groups with two penumbra poles . E - class of middle bipolar spot groups with two penumbra poles . ... H - class of unipolar penumbrated spot groups . ...

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... Exposure Time Calculator (ETC) . ... ESO - Public Surveys . ... the recommended values to use for DIT, . ... Detector on-chip integration (DIT): seconds. to your chosen value - a separate page gives recommended values to use for DIT - for modes 1 and 2 below you may wish to start with the maximum recommended values as these will minimize the effect of read noise (a total object exposure of Y secs with DIT=X secs will produce Y/X lots of read noise) and give you a lower limit on the time needed. ...

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... It provides for logging of the requests made to the server using the Common Logfile Format. This module has been replaced by mod_log_config in Apache 1.2 The log file contains a separate line for each request. A line is composed of several tokens separated by spaces: host ident authuser date request status bytes If a token does not have a value then it is represented by a hyphen (-). ... day = 2*digit . ... TransferLog . ... Context: server config, virtual host . ... Module: mod_log_common . ...

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• Server Pool Management
• Running a High-Performance Web Server for BSD
• Manual Page: ab - Apache HTTP Server

Winer Observatory P.O. Box 797, Sonoita, Arizona 85637-0797, USA . ... Site . Weather . Roof Status . ... Average Max. ... 0.0 . ... In 2004, the roof was operated manually, while in 2005 through 2007, it was operated automatically by computer, but was not closed by weather sensors. ... The "Closed" column includes those nights outside the Monsoon season when the Observatory was closed due to weather (the usual cause), equipment failures, or vacation by the Winer staff in 2004 through 2006. ...

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• Winer Observatory Fees and Charges
• Winer Observatory Engineering Roof Page
• Winer Observatory Benefactors

The starting page - The catalogues page - The list of the PUL2 fields - The list of the Pul-3(Pul-3SE) fields - The list of the PUL_ERS fields . please read short description of the access form controls . ... Right Ascension (ICRF/Tycho-2) J2000 at the central epoch of obs. (hours, minutes, seconds) (Obligatory parameter) . ... proper motion in RA (*cos(DE)) (ICRF/Tycho-2). (mas/yr) . ... Check the apropriate checkbox to output these data and radiobutton to select stars within interval. ...

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... First ask for the controlling parameters} set_string (s1,10) ask_for_string (Maximum step size [days],s1) set_maximum_step(s1) set_string (s1,100) ask_for_string (Maximum number of steps in the search,s1) set_number_of_iterations(s1) set_string (s1,1e-6) ask_for_string (Tolerance,s1) set_tolerance(s1) new_line write_string (Allowed coordinate types are true, apparent, and topocentric) new_line set_string (s1,true) ...

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• OptInt PmWiki : MROIFastTipTilt / Doc Man
• OptInt PmWiki : Doc Man
• OptInt PmWiki : PmWiki / Basic Variables

. Computer Ephemeris. Lunar pericenters. Explanations. This page contains the table with 12 rows (one row per month) and 4 columns, labeled with 'Perigee' for moments of perigee passage and 'Apogee' for moments of apogee passage. Each cell in the table contains three numbers: day, (month is possibly to read as first word in the same row), hours and minutes of the phenomenon. Hours and minutes are subdivided by column symbol (':').

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• Lunar phases. Explanations for Computer Ephemeris.
• Explanation of the table of ecliptical coordinates of the Sun.
• Explanations to tables for transformation from sidereal to universal time.

... ON THE ROLE OF LARGE-SCALE PLASMA IRREGULARITIES AT THE FINAL STAGE OF ANOMALOUS ABSOPTION DEVELOPING UNDER HF HEATING OF THE IONOSPHERE . ... Fig. ... With the aid of numerical statistical modeling based on multiple ray tracing it is shown that in presence of large-scale irregularities the reflected signal amplitude mean value is increased significantly. ... Dependence of the mean amplitude of the reflected from the ionosphere signal on the large-scale (10-50 km) electron density irregularity level...

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• Vladimir Marsakov Abstracts