409 Aspasia is a large main-belt asteroid that was discovered by French astronomer Auguste Charlois on 9 December 1895 in Nice.

It is classified as a CX-type asteroid.

[5] Photometric observations of this asteroid at the Palmer Divide Observatory in Colorado Springs, Colorado, during 2007–8 gave a light curve with a period of 9.021455 ± 0.000009 hours.

[4] This is consistent with previous results.

This article about an asteroid native to the asteroid belt is a stub.