3990 Heimdal
Encyclopedia
3990 Heimdal is an outer main-belt asteroid
discovered on September 25, 1987 by Jensen, P. at Brorfelde.
Asteroid
Asteroids are a class of small Solar System bodies in orbit around the Sun. They have also been called planetoids, especially the larger ones...
discovered on September 25, 1987 by Jensen, P. at Brorfelde.