Mercury - Mercury Motions orbit quiteelliptical o...

Info icon This preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
Mercury Motions orbit: quite elliptical o distance from Sun varies => speed varies plane inclined about 7 degrees from ecliptic period = 88 days o shortest "year" rotation: once every 59 days o one "Mercury day" = 59 "Earth days" rotation period = 2/3 orbital period spin - orbit coupling = simple relationship between rotation and orbital period example: Synchronous rotation Why? tidal forces from Sun (strong for close planet) like the Moon, one side of Mercury is somewhat more dense The rotation of Mercury is also shown in Figure 8.9.  [Link to Figure 8.9] CD: 2nd edition: See the animation in the Chapter 8 gallery, p. 1.  [Link to web   animation. SLOW DOWNLOAD] OPTIONAL MATERIAL: Combination of slow rotation and fast orbit when closest to Sun causes Sun to appear to turn around in the sky and go backward !!!! (like retrograde motion)
Image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Interior
Image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern