Colorful Witness to Tombaugh’s Discovery

Delta Geminorum

Delta Geminorum

By Wade V. Corbei

This is an interesting double star (in all actuallity a Binary star) found in the constellation Gemini (as noted by the name). The Primary star is much larger than the companion star, and appears as a yellowish-white, while the companion appears as a nice contasting purple. Delta Geminorum also holds a historic significance as well, as in 1930 Clyde Tombaugh discovered the planet Pluto 1/2° east of this star.

A unique star with an equally interesting history.

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