Research Articles

Radar Image of Asteroid 1989 PB

Science  22 Jun 1990:
Vol. 248, Issue 4962, pp. 1523-1528
DOI: 10.1126/science.248.4962.1523


Radar observations of the near-Earth asteroid 1989 PB, made shortly after its optical discovery, yield a sequence of delay-Doppler images that reveal it to consist of two distinct lobes that appear to be in contact. It seems likely that the two lobes once were separate and that they collided to produce the current "contact-binary" configuration.