description Seth Carlo Chandler Overview
Seth Carlo Chandler was an American astronomer best known for identifying a periodic variation in the position of Earth's rotational axis. Announced in 1891 and now called the Chandler wobble, the motion has a period of roughly 433 days and contributes to changes in the location of the geographic poles. Chandler also worked on variable stars and astrometry, fields concerned with changes in stellar brightness and precise measurements of celestial positions.
help Seth Carlo Chandler FAQ
What is the Chandler wobble?
The Chandler wobble is a periodic variation in the position of Earth's rotational axis. Seth Carlo Chandler identified and announced it in 1891.
How long is the Chandler wobble's period?
Its period is roughly 433 days. The motion changes the location of Earth's rotational pole over time.
Who discovered the Chandler wobble?
American astronomer Seth Carlo Chandler identified the motion. His finding was announced in 1891.
Does the Chandler wobble change Earth's orbit around the Sun?
No. It describes a small change in Earth's rotational axis and pole position, not a change in the planet's orbit around the Sun.
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