The Bode's Law is a rule that estimates distances of planets from the Sun in our solar system based on a numerical sequence. It was proposed by Johann Daniel Titius and Johann Elert Bode in the 18th century, and while it accurately predicted the positions of several planets, it is widely considered a numerical coincidence rather than a physical law.

Titius-Bode law was an attempt to find some pattern in the planets' distances. However, it failed with the discovery of Neptune. Today it is not even considered scientifically legitimate.

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In the 1700s, Johann Daniel Titus observed a mathematical progression between the distances from the sun of the then known planets as measured in Astronomical Units. This came to be known as the Titius-Bode Law and predicted that each planet would be roughly twice as far from the sun as the next planet toward the sun.

The Titius-Bode Law predicted that a planet should be in orbit between Mars and Jupiter and the absence of such a planet puzzled astronomers. When an organized search was made, what we now call the minor planet Ceres was found, as was Pallas, both in the predicted orbial region. This gave rise to a theory that a planet had once existed in that orbit, but that it had disintegrated at some point in the past. That theory is now discredited as we know that the gravitational influence of Jupiter prevented formation of a large body.

The Titius-Bode Law was also consistant with the orbit of Uranus when it was found, but failed for the orbits of Neptune and Pluto. It has since been further discredited and is no longer considered to be a valid description of solar system structure.

Johann Daniel Titius died on 1796-12-11.

Johann Daniel Titius was born on 1729-01-02.