Mars24: Acknowledgements & References
We thank members of the Mars Climate Orbiter and Mars Exploration Rover projects at NASA's Jet Propulsion Laboratory for their encouragement over many years on behalf of the development of our solar timing algorithms and Mars24 sunclock.
We thank members of the Mars Phoenix project at NASA/JPL and the University of Arizona and members of the Mars Science Laboratory project at NASA/JPL and the Johns Hopkins University with more recent updates to Mars24.
Sunclock Map Images
The "MOC_MOLA_NGS_Map" sample map imagery is derived from an image created by Malin Space Science Systems by combining Mars Global Surveyor (MGS), Mars Orbiter Camera (MOC) and Mars Orbiter Laser Altimeter (MOLA) data for a map to be used by the National Geographic Society. The base image was obtained from the MOLA Science website.
The color topography shade map image was created by the MGS MOLA team and was also obtained from the MOLA Science website.
The "VIS_MDIM_Map" sample map image used in the sunclock was obtained from the USGS Astrogeology Research Program PDS Imaging Node and is a combination of Viking project Visual Image Subsystem (VIS) color imagery with Viking Mars Digital Image Model Version 1 (MDIM1) data.
Landing Site Panorama Images
The local panorama images at the recent lander sites are derived from panorama images released by the lander projects.
The Phoenix panorama combines two images, the black and white image PIA10733 released May 29 and color image PIA11007 released July 31, 2008. The Phoenix images are courtesy NASA/JPL-Caltech/University of Arizona/Texas A&M University.
Java Software Code Libraries
Mars24 uses the following third-party, open-source Java libraries, provided under various licenses as listed. You may botain the source code for these libraries at the URLs provided.
Copyright © 2000-2011 Jason Hunter and Brett McLaughlin. Available at http://www.jdom.org/. Used under terms of a modified Apache License.
Copyright © 1999-2007 by Bruno Lowagie and Paulo Soares. Available at http://sourceforge.net/projects/itext/files/. Used under terms of the Mozilla Public Licens. (Note: Releases of iText subsequent to version 2.0 use a different license.)
Mars24 is primarily based on algorithms published in:
- Allison, M. 1997: Accurate analytic representations of solar time and seasons on Mars with applications to the Pathfinder/Surveyor missions. Geophys. Res. Lett. 24, 1967-1970, doi:10.1029/97GL01950.
- Allison, M., and M. McEwen 2000: A post-Pathfinder evaluation of aerocentric solar coordinates with improved timing recipes for Mars seasonal/diurnal climate studies. Planet. Space Sci. 48, 215-235.
Some updates and adjustments, including mission time calculations, were made based on:
- Allison, M., and J. Ferrier: Planetocentric solar coordinates, including efficient recipes for seasonal/diurnal timing on Saturn and Titan. Unsubmitted paper.
- Roncoli, R., B. Strauss, and D. Highsmith 2002: Mars Exploration Rover Project planetary constants and models - Version 2. Interoffice Memorandum IOM 312.F-02-003. NASA Jet Propulsion Laboratory
- Seidelmann, P.K., V K. Abalaki, M. Burs, M E. Davies, C. de Bergh, J.H. Lieske, J. Oberst, J.L. Simon, E.M. Standish, P. Stooke, and P.C. Thomas 2002: Report of the IAU/IAG Working Group on cartographic coordinates and rotational elements of the planets and satellites: 2000. Celest. Mech. Dynam. Astron. 82, 83-110, doi:10.1023/A:1013939327465. (Also cf., Corrigendum, 2002. Celest. Mech. Dynam. Astron. 84, 429, doi:10.1023/A:1021101631766.)
Other works useful in the development of the algorithm and software included:
- De Vaucouleurs, G., M.E. Davies, and F.M. Sturms 1973: Mariner 9 areographic coordinate system. J. Geophys. Res. 78, 4395-4404.
- Duxbury, T., R.L. Kirk, B.A. Archinal 2001: Mars Geodesy/Cartography Working Group recommendations on Mars cartographic constants and coordinate systems. International Society for Photogrammatry and Remote Sensing (ISPRS) Working Group Meeting IV/9.
- Folkner, W.M., C.F. Yoder, D.N. Yuan, E.M. Standish, and R.A. Preston 1997: Interior structure and seasonal mass redistribution of Mars from radio tracking of Mars Pathfinder. Science 278, 1749-1751, doi:10.1126/science.278.5344.1749.
- Simon, J.L., P. Bretagnon, J. Chapront, M. Chapront-Touzé, G. Francour, and J. Lasker 1994: Numerical expressions for precession formulae and mean elements for the Moon and planets. Astron. Astrophys. 282, 663-683.