> Dear List: Beat Bernd ! that's the challenge ;-) > McSween: Cosmic Debris and their parent planets > Michel
OK, taking the bait ;-) Brian Marsden, Director of the Minor Planet Center. After long-lost asteroid 719 Albert was found again in the year 2000, he reviewed the orbital calculations and was thus able to confirm that asteroid Albert had definitely been rediscovered after 89 years. He also calculated the minimum approach distance of asteroid 1999 AN10 (diameter ca. 0.8 - 1.8 km) to Earth on August 7, 2027. Sit down, breathe deeply: it may come as close as ~38,000 km. I did not really intend to take part in this competition as I am trying to put together some information about heavily shocked chondrites and that ominous "pseudotachylite" meteorite the Hupes are offering (see their weekly rare material ad post). Pseudotachylite is a well-known type of impactite breccia and occurs as abundant bodies in the Vredefort and Sudbury impact structures. Best wishes, Bernd ______________________________________________ Meteorite-list mailing list [EMAIL PROTECTED] http://www.pairlist.net/mailman/listinfo/meteorite-list
