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: http://star.arm.ac.uk/nibulletin/2002-Jul-23.html
Дата изменения: Wed Jul 24 13:32:54 2002 Дата индексирования: Tue Oct 2 00:57:40 2012 Кодировка: Поисковые слова: arp 220 |
From: TerryMosel@aol.com Date: Tue, 23 Jul 2002 18:53:46 EDT Subject: TW + Aurorae + Close NEO Hi all, The New Glasgow Planetarium Space Theatre has notched up over 50,000 visitors in just 5.5 months of operation. It is headed by the excellent Mario di Maggio, whom many of you will know from his time at Armagh Planetarium and his many talks and presentations throughout Ireland. It will be featured on Tomorrow's World on Wednesday 24 July, on BBC1. at 7 p.m. AURORA ALERT: The Sun is going through another period of intense flare and CME activity, associated with some large NE Spots, so look out for aurorae over the next few nights. ANOTHER largish NEO asteroid is headed for a near-miss with Earth, and will become bright enough to be visible in small telescopes. It's called "2002 NY40" and was discovered by LINEAR on 14 July. Closest approach will be on 18 August, when it is predicted to reach mag 9.6. It will then be fairly well up in our evening skies, so should be visible in almost any telescope. It will be brightest from Ireland just before dawn on the 18th, and again just after nightfall that evening, probably just above 10th magnitude: after that it fades very rapidly as the illuminated portion visible from Earth rapidly decreases. It is thought to be between 450 and 1000km in diameter. A precise orbit is not yet available: I will circulate details when I have them. The present estimate of the miss distance is 0.0036 AU, or about 1.5 times the distance of the Moon. Successful IAA/BGS Outing: Last Saturday's IAA joint Field Trip with the Belfast Geological Society to Larne to see geological evidence for a mega-meteorite impact at the end of the Triassic period was very successful. Led by Dr Mike Simms of the Ulster Museum, many IAA members learnt some basic geology, found some fossils, and saw some very interesting evidence for the impact. A paper by Mike has been sent to 'SCIENCE', and publication is hoped for soon. Clear Skies, Terry Moseley
Last Revised: 2002 July 24th
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