Earth Crossing Asteroids
Saturday 12th December 2020
Start time : 16:00
Speaker : Paul Fellows
The story of the discovery of Asteroids, and the realisation that they are not all neatly confined to a belt that lies safely beyond the orbit of Mars.
Some, indeed, many come into the inner solar system, and approach the Earth. These can be classified into different groups according to their orbits, and the spaceguard system goes to great lenghts to try to track them.
However, their orbits are unstable, especially if they are smaller, and they can wander off track due to something called the Yarkovsky effect!
We will take a look at some of these asteroids and what we know about them, including a look at the tale of Hermes, the asteroid that was lost for many years despite making repeated close passes of the Earth.
Our talks are aimed at the beginner level and can be enjoyed by all ages and levels of experience.
This is a Zoom Presentation from the Cambridge Astronomical Association
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About our speaker:
Paul is chairman of the Cambridge Astronomical Society and a keen amateur astronomer having built his first telescope in 1975, he now operates his own private observatory and takes many astronomical images of both deep sky and solar system objects.
He studied at Emmanuel College Cambridge, from which he has an MA in Natural Sciences and a post-graduate Diploma in Computer Science. He is an elected Fellow of both the Royal Astronomical Society and the Institute of Engineering and Technology, and
RAS Fellow to Cunard line as well as a part-time advisor and board member of a number of software and electronics design companies in the Cambridge area.