Ilmatar (minor planet designation: 385 Ilmatar) is a large Main Belt asteroid. It was discovered by Max Wolf on March 1, 1894, in Heidelberg. It was named after Ilmatar, virgin spirit of the air. Its mass is unknown. Its rotation is 62.35 hr. References External links Background asteroids Ilmatar Ilmatar S-type asteroids (Tholen) 18940301