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Дата изменения: Unknown Дата индексирования: Sun Apr 10 01:12:18 2016 Кодировка: Поисковые слова: zodiacal light |
AMPLE (Adaptable Minor Planet
Ephemerides) is integrated software package to deal with a number of problems
concerning minor planets with the aid of IBM-type personal computer.
Among these problems are the following:
AMPLE is organized on the pattern of a
yearbook. Yearly issue of the package is destined for operating basically within
the time interval covering 16 months (from November of the year preceding to the
title year of the package to February of the subsequent one (basic interval).
The package computes positions of minor planets by
the formulae of elliptic motion using sets of osculating elements obtained in
advance for a number of non-uniformly distributed moments of time. The space
between the moments is determined in such a way as to assure precision of
spherical coordinates not worse than 0.2 arcsec within 120 day intervals
centered at oppositions of each planet which fall within basic interval. For
minor planets with perihelion distances less than 1.4 a.u. the created net
of osculating elements assured precision not worse than 0.2 arcsec during
the whole basic interval. Beyond the limits of 120 day intervals the precision
of computations is not ensured for the ordinary minor planets. The computed
positions whose precision can not be ensured within 0.2 arcses are marked
by asterisk.
In a number of the package sections
such as "Ephemerides", "O-C", "Tracks", "Orbits" computations can be fulfilled
for the moments of time lying outside of the basic interval. In this case
positions are computed on the base of the fundamental set of osculating elements
for standard epoch lying within title year.
It is
worth noting that the employing method of computations enables the
time-consuming problems to be effectively solved with good precision in a matter
of seconds (e.g. the opposition ephemerides for all minor planets at oppositions
during 2016, covering 80 day intervals with 10 day step, can be calculated for
the time on the order of 1000 seconds). In so doing AMPLE enables one to display
only those lines of epemerides which fit combination of restrictions imposed on
several ephemeris data.
The special option to calculate positions of minor
planets at any moment (within time interval from 1800 till 2100) by numerical
integration is added to the package. Such option exists only in sections
Ephemerides and O-C. There is opportunity performing the ephemeris and O-C
calculations for objects which are absent in the data base of the package.
Such objects can be described by orbital elements or by initial values of
coordinates and velocities.
As AMPLE is able to
reproduce virtually any table of "the Ephemerides of
Minor Planets", it may be considered as computer version of the EMP.
In AMPLE there is opportunity calculating
MOID value (Minimum Orbit Intersection Distance)
between the osculating orbit of some body (ordered major or minor
planet) and orbits of any set of selected minor planets and other
functions of elements.
Starting from Version 1.5 next opportunities
are introduced in AMPLE: calculation of criteria of Tisserand for orbits of any
set of minor planets with respect to the orbit of some ordered body
(major or minor planet); calculation of photometric diameters of any
set of minor planets (section ''Elements''); calculation of ephemeris in rectangular
coordinates for
any set of major planets and minor planets with respect to the center
of some ordered minor planet (section ''Ephemerides'').
Starting from version of AMPLE for 2012 (Version 1.6) new opportunities are introduced (section ''Elements''):
all operations of package section ''Elements'' can be done for objects
from user text file;
calculating near commensurability for any set of minor planets with respect to the orbit of some ordered body (major or minor planet);
calculating the time of perihelion passage as the nearest to the epoch
passage.
Starting from version of AMPLE for 2013 (version 2.0) new
opportunities are introduced (section "Elements"):
calculating the times of ascending and descending nodes passages
nearest to the epoch of perihelion passage.
The orbital elements of all minor planets used in AMPLE for 2016
have been determined in IAA on the ground of available observations
in the catalogue of observations of the Minor Planet Center.
In so doing coordinates and masses of perturbing planets are taken
from DE 405 instead of DE 403 which were used in previous version
of AMPLE.
AMPLE application was created under Win32 standard
in the environment of MS Visual C++ 6.0, under object-oriented technology.
The Help service of AMPLE is developed with
Microsoft HTML Help WorkShop, all topics are represented as html files.
AMPLE distributive is created with InstallShield for Microsoft Visual C++.
AMPLE package version is freeware.
Access to the package is open via FTP for anonymous user at the address:
ftp://quasar.ipa.nw.ru/pub/WINAMPLE.
The package can be also supplied on CD ROM
request which should be sent at the address ample@quasar.ipa.nw.ru
or by FAX:
+7-812-275-11-19
or by mail: Institute of Applied Astronomy, nab.Kutusova,
10, Saint-Petersburg, 191187, Russia