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XEphem 3.7.6

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Xephem Is A Scientific-grade Interactive Astronomical Ephemeris Package. Xephem:


  • computes heliocentric, geocentric and topocentric information for all objects;

  • has built-in support for all planets; the moons of Mars, Jupiter, Saturn, Uranus and Earth; central meridian longitude of Mars and Jupiter; Saturn`s rings; and Jupiter`s Great Red Spot;

  • allows user-defined objects including stars, deepsky objects, asteroids, comets and Earth satellites.

  • provides special efficient handling of large catalogs including Tycho, Hipparcos, GSC.

  • displays data in configurable tabular formats in conjunction with several interactive graphical views;

  • displays a night-at-a-glance 24 hour graphic showing when any selected objects are up;

  • displays 3-D stereo Solar System views that are particularly well suited for visualizing comet trajectories;

  • quickly finds all close pairs of objects in the sky;

  • sorts and prints all catalogs with very flexible criteria for creating custom observing lists;

  • creates plots of any pairs of all data fields throughout the program;

  • downloads current asteroid and comets ephemerides from Lowell Observatory and Minor Planet Center;

  • downloads timely Earth satellite orbital TLE parameters;

  • plots true binary system orbits;

  • downloads Digitized Sky Survey FITS files from STScI or ESO;

  • provides a handy coordinates spreadsheet for converting among equatorial, ecliptic, horizon and galactic frames ;

  • displays live SOHO images of the Sun;

  • includes a compiler for entering and solving user-written functions using any data fields;

  • serves as the control point for GOTO telescopes such as Meade LX200 or other external applications;

  • displays FITS files images overlaid with database symbols and other graphical information;

  • performs automatic star pattern matching to automatically solve for World Coordinate Systemon any image;

  • performs 1-click 2D Gaussian relative and absolute photometry;

  • defines and saves any number of Eyepieces to use in sky maps;

  • captures, displays and clips to any number of local horizon profiles;

  • stores sets of all Sky View options in history sets for easy playback later;

  • prints using high quality Postscript;

  • allows you to assign any number of objects as Favorites for special fast access throughout the program, and makes them available even when their original databases are no longer loaded;

  • provides an extensible image gallery initialized with over 300 beautiful and informative color images of deep sky objects;

  • provides an observing logbook which is automatically filled in with observing circumstances, with searching on most fields;

  • displays magnetic deviation for any location.

  • create movie loops of any View, NAAG or Plot window.


User's rating:

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History updates (Complete changelogs since the listing on this site)

3.7.6 [01-21-13]

Show transit azimuth
  • Plots now show coordinates under cursor.
  • Improved Earth night lights file, nearth.gif.
  • Update Jupiter Great Red Spot default longitude.
  • Show satellite element age in Index.
  • Add Curiosity landing coordinates to mars_db
  • Separate Sky View horizon clipping option
  • SOHO is back
  • New daytime earth image with improved geography shading
  • SkyView -> Favorites offers same controls as map right-click
  • Telescope GoTo honors horizon map
  • Other versions : 3.7.6-RC13 3.7.6-RC12 3.7.6-RC11 3.7.6-RC10 3.7.6-RC9 3.7.6-RC7 3.7.6-RC6 3.7.6-RC5 3.7.6-RC4 3.7.6-RC3 3.7.6-RC2 3.7.6-RC1 3.7.5 3.7.5-RC14 3.7.5-RC13 3.7.5-RC12 3.7.5-RC11 3.7.5-RC10 3.7.5-RC9 3.7.5-RC8 3.7.5-RC7 3.7.4

    v3.7.6-RC13 [01-18-13]

    Show transit azimuth

    v3.7.6-RC12 [12-31-12]

    Plots now show coordinates under cursor.

  • Improved Earth night lights file, nearth.gif.

  • v3.7.6-RC11 [11-25-12]

    Improve Earth sunline in cyl graphic projection near equinox.

  • Improve error handling downloading asteroid data.
  • Improve accuracy of Earth satellite transits.

  • v3.7.6-RC10 [10-21-12]

    Significantly improve accuracy of Earth satellite rise and set predictions.

    v3.7.6-RC9 [10-08-12]

    Significantly improve accuracy of Earth satellite transit predictions.

    v3.7.6-RC7 [10-04-12]

    Show satellite element age in Index.

    v3.7.6-RC6 [08-18-12]

    Add Curiosity landing coordinates to mars_db

    v3.7.6-RC5 [07-09-12]

    Separate Sky View horizon clipping option

    v3.7.6-RC4 [04-16-12]

    Show sun in moonview during solar eclipse

  • Better handling of proxies and large files in web downloads

  • v3.7.6-RC3 [03-23-12]

    SOHO is back

    v3.7.6-RC2 [10-08-11]

    New daytime earth image with improved geography shading

    v3.7.6-RC1 [09-27-11]

    Support UCAC catalog version 3

  • Sky view shows PA in live report
  • Favorites may now be edited in-place
  • Earth view displays great circle distance and bearing
  • Change Earth view cylindrical projection from cos to linear
  • Earth Object table reports range rate for solar system objects.
  • Eyepiece rotation depends on Alt/Az or RA/Dec placement context.
  • Updated magnetic deflection tables
  • Updated Delta T tables

  • v3.7.5 [08-02-11]

    Support UCAC catalog version 3

  • Sky view shows PA in live report
  • Favorites may now be edited in-place
  • Earth view displays great circle distance and bearing
  • Change Earth view cylindrical projection from cos to linear
  • Earth Object table reports range rate for solar system objects.
  • Eyepiece rotation depends on Alt/Az or RA/Dec placement context.
  • Updated magnetic deflection tables
  • Updated Delta T tables

  • v3.7.5-RC14 [05-20-11]

    Eyepiece rotation depends on Alt/Az or RA/Dec placement context.

    v3.7.5-RC13 [04-19-11]

    Delta T updated through 2011

  • Miranda elements now correct
  • Sky View updates correctly while on alternate workspace

  • v3.7.5-RC12 [01-30-11]

    Support UCAC catalog version 3

  • Sky view shows PA in live report
  • Favorites may now be edited in-place
  • Earth view displays great circle distance and bearing
  • Change Earth view cylindrical projection from cos to linear
  • Earth Object table reports range rate for solar system objects.

  • v3.7.5-RC11 [10-24-10]

    Better support for HTTP 1.1 for celestrak.com

    v3.7.5-RC10 [10-11-10]

    Change cfa.harvard.edu URLs to minorplanetcenter.org and fix connection.

    v3.7.5-RC9 [08-11-10]

    Support UCAC catalog version 3

    v3.7.5-RC8 [07-11-10]

    Sky view shows PA in live report

    v3.7.5-RC7 [07-02-10]

    Favorites may now be edited in-place

    v3.7.4 [05-18-10]

    Earth view displays great circle distance and bearing

  • Change Earth view cylindrical projection from cos to linear

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    Predicted future versions and notices:

    The doDownload.com constantly monitors the update of all programs, including information from the XEphem 3.7.7 changelog file, however sometimes it can happen that data are not complete or are outdated.We assume that author continue's to develop 3.8.0 version with further advanced features, and soon you will be informed. Equally important 4.0.0 upgrades of the program we will continue to monitor. Full XEphem description has been compared with the overall software database and our algorithm has found the following applications (are showed below).

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