AstroGeo22 : a 4.429 Ga Lunar ephemeris
AstroGeo22 is the name given to the Earth-Moon evolution solution obtained over 4.25 Ga in (Farhat, M., Auclair-Desrotour, P., Boué, G., Laskar, J., 2022, Astronomy & Astrophysics, 665, L1). You will find here the raw data file for the Earth-Moon evolution, as plotted in the Farhat et al, 2022 paper, as well as links to graphic tools aimed for the comparison to geological data. The original paper is available here.
AstroGeo22 solution and data files
AstroGeo22 tools
AstroGeo22 conversion tool
This tool allows to transform any observable quantity (precession frequency (p), length of the solar day (lod), Earth-Moon distance (a)), obtained for example during a stratigraphic analysis, into any of the other ones. The transfer is made using the nominal AstroGeo22 solution. The conversion applies also to an associated uncertainty interval. The data can be plotted with the current AstroGeo22 solution, and compared to published geological data. All plots can be exported in various formats (pdf, png, svg).
AstroGeo22 data input tool
This tool allows to input a new geological data point for any observable(precession frequency (p), length of the solar day (lod), Earth-Moon distance (a)) and compare it to the nominal AstroGeo22 curve and already published geological data points. The data can be plotted with the current AstroGeo22 solution, and compared to published geological data. All plots can be exported in various formats (pdf, png, svg).
AstroGeo22 geological data references
Bibliographic references for the data that are displayed in the AstroGeo22 tools.