A new version of the program, Ephepm 1.1, has been released for calculating Baricentric Coordinates of solar bodies Systems and physical Librations of the Moon. The program, written in C++, is available on GitHub under the GPLV3 license.
To use the program, users need to download ephemeride files from the website of the laboratory of ephemeric astronomy of IPA RAS. The program supports ephemeride versions from 2015 to 2021 in Spice format (.bsp and .bpc files).
The program’s graphic interface is implemented using the GTK4 library, specifically GTKM-4.0. To use earlier versions of the library, users can download Ephepm 1.0.2.
Ephepm 1.1 offers various calculation options for barocentric coordinates:
- Temporary scales: UTC, TT, TDB, taking into account time zones
- Coordinate systems: equatorial, ecliptic
- Calculation options: coordinates, speed in the decomposition along the axes
- Equator and equinox: medium (J2000), average on date (IAU2000), true on date (IAU2000)
- Units of measurement for coordinates: astronomical units, kilometers, meters
- Field units for speed: ae/day, km/day, km/s, m/s
- Units of measurement for luretation: radians, degrees
In addition to the calculation capabilities, the program can also generate a schematic schedule of orbits, considering the given parameters and showing the position of the bodies at a specific time.