Pluto and the Mini-Planets.

“We recommend Edric Cane’s book, Teaching to Intuition, as an excellent source for how mathematics should be learned.”  NASA mathematician Fred Krogh (Principal Mathematician, Ret., Jet Propulsion Laboratory) was kind enough to recommend my book on the home page of the official site that made available to Universities and Industry the math and algorithms developed at JPL over 30 years of planetary exploration. I was taken by surprise and greatly appreciative of seeing a book that uses only examples from Elementary and Middle School math in such proximity with sophisticated,  pioneering mathematics. Krogh added: “This (Teaching to Intuition) is mainly for elementary mathematics, but the principles hold at all levels.”

Now I learn that one of the junior siblings of Pluto, one of those mini-planets or main-belt asteroids that, along with Pluto, do not qualify as official planets, has been named after Fred Krogh. The NASA page that gives the known characteristics of 5927 Krogh says of its eponym: “American mathematician Fred T. Krogh developed the accurate, flexible and fast numerical integration algorithm used to track and navigate NASA interplanetary spacecraft since the 1970s. His work is at the core of JPL planetary, asteroid and comet orbit solutions and ephemerides.”  

Most of us earthlings have little connection with Mercury, Mars, Jupiter, Saturn, Uranus or Neptune.  As for Venus, we can only wish. But Krogh was kind enough to look down on a book I wrote. Let me congratulate Fred Krogh on 5927 Krogh.