This page is part of a series.
- № 17. Welcome Back! (to respect for the ancients)
- № 18. 2160 Orbits of Jupiter (The “Mayan” Calendar)
- № 19. 432 Orbits of Jupiter (“Great Cycles”)
- № 20. Jupiter is a Celestial Doomsday Clock
- № 21. End Date and Great Wayeb
I have always called this simply “the table“
I worked for over five years developing this table. It is the centerpiece of my work, though the interpretation of what has happened in the past (the furthest right-hand column) is ongoing.calendar120220121015PM
Please note the following:
- Great Cycles: Great Cycles occur every 432 orbits of Jupiter
- Jose Solar Cycles: I cannot help but notice that are only three times when an even number of Jose solar cycles coincides with a Great Cycle, once at the start of the calendar 25,621.488 years ago, once in the middle of the calendar (Great Cycle 3.5) in 10,793 BC and this year, 2018 AD.
I maintain on this page a list of “Mayan” calendar pages for people doing basic research into this subject.
Access them while you can. Their owners continue to pay mistakenly thinking the relevance of their work has long since passed along with all the hysteria, intellectual pretension, and hype of the December 21, 2012 date.
8 Kiloparsecs is 26092.5 light years
For nearly a century astronomers have expended considerable effort to determine the size of the Milky Way. This effort is worthwhile because any change in the value of the distance from the Sun to the center of the Galaxy, Ro, has widespread impact on astronomy and astrophysics. All distances determined from observed radial velocities and a rotation model of the Galaxy are directly proportional to Ro. Most estimates of the gravitational and luminous mass of the Galaxy scale with Ro. Similarly, the mass and luminosity of objects within the Galaxy, such as giant molecular clouds and the non-thermal source at the Galactic center depend on Ro. On a larger scale, since extra-galactic distances are based on Galactic calibrations, the Hubble constant and Ro are interrelated. Indeed, it may be possible to use the size of the Milky Way as an extra-galactic “meter stick” and determine distances to similar spiral galaxies.
More than eighty years after Shapley published his estimate of Ro, there is a reasonable consensus as to its value. Nearly all methods of determining Ro now yield values between 7 and 9 kpc. An analysis of all methods and measurements prior to 1993 yields a best estimate for Ro of 8.0 kpc, with a standard error of about 0.5 kpc (References: Reid 1993, Ann. Rev. Astron. Astrophys., 31, 345).