Printer Friendly

Asteroid (229255) Andrewelliott.

Our friend and fellow-observer Andrew Elliott sadly passed away last year, an obituary having been published in the June issue of the Journal. I am delighted to announce that recently an asteroid was posthumously named in his honour. The following citation appeared in Minor Planet Circular 75105 published on 2011 May 17:

(229255) Andrewelliott = 2005 AJ
 Discovered 2005 Jan. 4 by P. Birtwhistle at
 Great Shefford. Andrew John Elliott (1946-2010)
 was a British observer who pioneered
 the use of low-light devices, precision timing
 and video methods in observing short-lived
 phenomena. Assistant director for occultations
 of the British Astronomical Association
 Lunar and Asteroids Sections, he lectured
 widely in the UK and Europe.

ARPS member Peter Birtwhistle is to be thanked for making this dedication possible. The object, discovered by Peter in 2005, was at first provisionally (and coincidentally) named '2005 AJ', which seems especially appropriate as the initials 'AJ' correspond with Andrew's own names.



(229255) Andrewelliott is a small main-belt asteroid probably some 2-3km in diameter. Its orbit is rather circular in shape (e = 0.044) and tilted close to the ecliptic plane (i = 3.47[degrees]). With a semi-major axis of 2.83 AU, the object is located near the central region of the Main Belt, orbiting the Sun once every 4.77 years. Interestingly it lies quite close to one of the Kirkwood Gaps having a 5:2 resonance with the planet Jupiter. The images of

(229255) Andrewelliott shown here were taken by the Director on 2011 June 3 using the 2.0m Faulkes Telescope South located at Siding Spring, Australia. Figure 1a (left) is a stack of 3 images with a total exposure time of 10 min taken through an r' filter (mid-time: 09:51 UT) and shows the asteroid as a short trail near the centre of the frame. The field of view is 2.3 arcmin square, and includes a previously-unknown 22nd magnitude object moving in p.a. 325[degrees], indicated by the arrow. Figure 1b (right) is constructed from a stack of 6 frames with a total exposure time of 17.5 min taken between 09:46-11:28 UT, also through an r' filter. The frames were tracked on the motion of the asteroid and clearly show the 21st magnitude object, which was situated at a distance of 2.07AU from the Earth at the time. The field of view is just 52 arcsec square. Photometry between 09:47-11:27UT showed the asteroid fading from a V magnitude of 21.42 [+ or -] 0.03 to 21.79 [+ or -] 0.05, indicating the object is rather elongated in shape and suggesting a rotation period of several hours.

I am very happy that Andrew's name lives on by way of this asteroid and am pleased that I was able to secure an image in time for this note, thanks to Paul Roche and the assistance of Alison Tripp of the Faulkes Telescope team based at the University of Glamorgan.

Richard Miles, Director
COPYRIGHT 2011 The British Astronomical Association
No portion of this article can be reproduced without the express written permission from the copyright holder.
Copyright 2011 Gale, Cengage Learning. All rights reserved.

Article Details
Printer friendly Cite/link Email Feedback
Title Annotation:Asteroids & Remote Planets Section
Author:Miles, Richard
Publication:Journal of the British Astronomical Association
Date:Aug 1, 2011
Previous Article:Aurora section.
Next Article:Asteroidal occultation observed from the UK and Europe.

Terms of use | Copyright © 2018 Farlex, Inc. | Feedback | For webmasters