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|Oscillator type||Billiard table|
|Number of cells||29|
|Discovered by||Peter Raynham|
|Year of discovery||Unknown|
R2D2 is a period-8 oscillator that was found in the form shown in the infobox at right, but not named, by Peter Raynham in the early 1970s. The name derives from a form with a larger and less symmetric stator discovered later by Noam Elkies in August 1994, shown below.
- 29P8.2 at Heinrich Koenig's Game of Life Object Catalogs