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  2. Timekeeping on Mars - Wikipedia

    en.wikipedia.org/wiki/Timekeeping_on_Mars

    It is slightly shorter than the sidereal year due to the precession of Mars' rotational axis. The precession cycle is 93,000 Martian years (175,000 Earth years), much longer than on Earth. Its length in tropical years can be computed by dividing the difference between the sidereal year and tropical year by the length of the tropical year.

  3. File:Geologic Map of Mars Pamphlet.pdf - Wikipedia

    en.wikipedia.org/wiki/File:Geologic_Map_of_Mars...

    Size of this JPG preview of this PDF file: ... Conversion program: Adobe PDF Library 10.0.1: Encrypted: no: Page size: 612 x 792 pts (letter) Version of PDF format: 1 ...

  4. File:Geologic Map of Mars.pdf - Wikipedia

    en.wikipedia.org/wiki/File:Geologic_Map_of_Mars.pdf

    File:Geologic Map of Mars.pdf. ... Size of this JPG preview of this PDF file: 785 × 600 pixels. ... Version of PDF format: 1.7

  5. Darian calendar - Wikipedia

    en.wikipedia.org/wiki/Darian_calendar

    The Clancy Mars year is reckoned from one Martian northward equinox to the next (L s = 0°), and specific dates within a given year are expressed in L s. The Clancy Mars year count is approximately equal to the Darian year count minus 183. The Allison Mars sol date epoch equates to L s = 276.6° in a year that is undefined in the Clancy Mars ...

  6. File:Geologic Map of Mars (Description).pdf - Wikipedia

    en.wikipedia.org/wiki/File:Geologic_Map_of_Mars...

    File:Geologic Map of Mars (Description).pdf. ... Size of this JPG preview of this PDF file: ... Version of PDF format: 1.7

  7. Length of a day on Mars is shrinking as planet is strangely ...

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  8. Jet Propulsion Laboratory Development Ephemeris - Wikipedia

    en.wikipedia.org/wiki/Jet_Propulsion_Laboratory...

    Files vary in the time periods they cover, ranging from a few hundred years to several thousand, and bodies they include. Data may be based on each planet's geometric center or a planetary-system barycenter. The use of Chebyshev polynomials enables highly precise, efficient calculations for any given point in time.

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