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Titius-Bode Law -. Mercury 0.4 AU’s Venus + 0.3 (0.7) Earth + 0.6 (1.0) Mars + 1.2 (1.6) A. B. + 2.4 (2.8) Jupiter + 4.8 (5.2) Saturn + 9.6 (10.0) Uranus +19.2 (19.6) (Actually 19.2) Neptune +38.4 (38.8) (Actually 30) Pluto is at 39.5.

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titius bode law
Titius-Bode Law -
  • Mercury 0.4 AU’s
  • Venus + 0.3 (0.7)
  • Earth + 0.6 (1.0)
  • Mars + 1.2 (1.6)
  • A. B. + 2.4 (2.8)
  • Jupiter + 4.8 (5.2)
  • Saturn + 9.6 (10.0)
  • Uranus +19.2 (19.6) (Actually 19.2)
  • Neptune +38.4 (38.8) (Actually 30)
  • Pluto is at 39.5
slide3
The Titius-Bode law works very well for the first six planets and the asteroid belt, but not very well for the planets after that. The Titius-Bode law is probably just a curious coincidence.
slide4
Mercury’s orbit is always within 0.5 AU of the Sun. It is always visually close to the Sun; therefore, it is only observed when low on the horizon (or during a solar eclipse).
slide7
Mercury was originally thought to be two planets. The Greeks called it Apollo when seen in the morning and Hermes when seen in the evening.
slide8
Mercury’s surface is fairly reflective. Albedo - the fraction of incident sunlight an object reflects into space.
slide9
Mercury’s albedo is only about 0.1, similar to Earth’s Moon.However, Mercury’s nearness to the Sun makes it one of the brightest objects in the night sky.
slide12
Mercury’s orbital period is 88 Earth days.As viewed from the Earth, Mercury can pass over the surface of the Sun.
slide19
Transits of the Sun by Mercury are fairly rare. There are only twelve or so per century, always occurring in Nov. or May.
slide20
Radius - 2450 km 0.38 Earth radiiMass - 3.3 x 1026 g 0.055 Earth’sDensity - 5.4 g/cm3 slightly less than Earth’s
slide21
Mercury is now the smallest planet.(It is larger than Pluto, so it was second smallest before Pluto’s demotion to dwarf planet.)
slide24
There is a reason for this 2/3 ratio. Part of the reason is Mercury’s very eccentric orbit (very elliptic).
the orbital and rotational periods are synchronous at perihelion closest approach to the sun
The orbital and rotational periods are synchronous at perihelion (closest approach to the Sun).
slide28
The Sun would move from east to west, except near perihelion, where rotation is slightly slower than orbital speed.
at this time the sun would appear to stop and go backward before it resumed its east to west motion
At this time the Sun would appear to stop and go backward before it resumed its east to west motion.
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