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SKY & TELESCOPE'S NEWS BULLETIN
MARCH 26, 1999

NEW ASTEROID SATELLITE

For the first time, ground-based astronomers have directly imaged a satellite orbiting an asteroid. William J. Merline (Southwest Research Institute) and his colleagues announced on IAU *Circular* 7129 that several images of minor planet 45 Eugenia show a fainter companion. The satellite -- designated S/1998 (45) 1 -- was first seen in a series of pictures during a 10-day span in November 1998 using the 3.6-meter Canada-France-Hawaii Telescope atop Mauna Kea, Hawaii. The object was spotted again on January 4th. Merline and his colleagues determined that the moon orbits the 200-kilometer-wide asteroid in a near-circular orbit every 4.7 days. Details of the discovery will appear in a forthcoming issue of *Nature.*


Copyright 1999 Sky Publishing Corporation. S&T's Weekly News Bulletin and Sky at a Glance stargazing calendar are provided as a service to the astronomical community by the editors of SKY & TELESCOPE magazine. Widespread electronic distribution is encouraged as long as these paragraphs are included. But the text of the bulletin and calendar may not be published in any other form without permission from Sky Publishing (contact permissions@skypub.com or phone 617-864-7360). Updates of astronomical news, including active links to related Internet resources, are available via SKY & TELESCOPE's site on the World Wide Web at http://www.skypub.com/.

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