Michael F. A'Hearn
Distinguished University Professor Emeritus
and Research Professor
Department of Astronomy
University of Maryland
College Park MD 20742-2421 USA
Office Location: Computer and Space Science Building, Room 1207A
Express Service Deliveries: 1113 Physical Sciences Complex, Bldg 415
Telephone: +1 301 405 6076
Electronic contact is also possible by this
REMAINDER OF THIS PAGE IS BADLY OUT OF DATE. IT WILL BE UPDATED IN DUE COURSE
On 7 July 1999 NASA announced the selection of our Deep Impact mission
to be the eighth flight in the Discovery Program. On 23 May 2001, the
mission was confirmed to go into the construction phase (phase C/D
in NASA jargon). The project underwent its Critical Design Review
Jan 29-31, 2002.
The instruments were handed over to the
spacecraft team in August 2003 for integration into the spacecraft.
The complete flight system then went through its environmental tests
and was shipped to Florida in October 2004. Launch occurred on 12
January 2005 and encounter occurred on 4 July 2005.
Some details about the mission are on our
Deep Impact web pages.
These pages are still being developed and more information will be added
to them regularly. Papers about Deep Impact are linked from my
Several PowerPoint presentations about Deep Impact are available. Here
are a few - one that was presented at the
Erice Workshop at the
Ettore Majorana Center for Science and Culture in summer 2001 and another
that was presented in June 2002 at a
Meudon Workshop on the interior
structure of small bodies. More recent presentations include one that I
have used as the basis for several
recent talks and one that Karen Meech gave as a
ESO. For now, they are available only as binary Power Point files.
BEWARE: The files are about 15 to 17 MBytes each so don't download them
unless you have plenty of storage space and bandwidth. A recent
short paper presented at the IAU General
Assembly in July 2003 is also available.
Sublimation of Ices
Web forms are available for calculating
sublimation of ices
A list of recent and forthcoming publications
"Scenic" photographs of comet Hale-Bopp
taken by me from Flagstaff are available here.
Fall 2000: Astronomy 330. The syllabus and other details about the
course are available on-line.
Details are here.
Fall 1998: Astronomy 610 Astronomical Instrumentation and Techniques.
A brief course description is available.
Fall 2006: Astronomy 688P - Planetary Science.
The syllabus and other
details will be available on line here.
International Astronomical Union
Home pages for several IAU activities can be found here. These
Planetary Systems Sciences, and the
Committee for Small
Body Nomenclature .
Planetary Data System - Small Bodies Node
We also manage the Small Bodies
Node of NASA's Planetary Data System. Our primary job is to archive
all data from NASA missions to comets and asteroids, from similar missions
by other space agencies, from all instruments related to interplanetary
dust. We also archive many types of supporting data, mostly from
ground-based and Earth-orbital remote sensing.
Updated: Thursday, 14-May-2015 17:48:23 EDT, mfa