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Alan Fitzsimmons

Researcher at Queen's University Belfast

Publications -  250
Citations -  10001

Alan Fitzsimmons is an academic researcher from Queen's University Belfast. The author has contributed to research in topics: Comet & Asteroid. The author has an hindex of 48, co-authored 238 publications receiving 9171 citations. Previous affiliations of Alan Fitzsimmons include Queen's University & Queen Mary University of London.

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Deep Impact: Observations from a worldwide Earth-based campaign

Karen J. Meech, +208 more
- 14 Oct 2005 - 
TL;DR: Data show that there was new material after impact that was compositionally different from that seen before impact, and the ratio of dust mass to gas mass in the ejecta was much larger than before impact.
Journal ArticleDOI

Direct Detection of the Asteroidal YORP Effect

TL;DR: In this paper, optical photometric observations of a small near-Earth asteroid, (54509) 2000 PH5, acquired over 4 years were obtained and it was found that the asteroid has been continuously increasing its rotation rate ω over this period by dω/dt = 2.0 (± 0.2) × 10−4 degrees per day squared.