Posts Tagged ‘Arecibo’

Успешно проведена радиолокация астероида 2012 QG42


DSS-14 “Mars”

13 сентября на обсерватории Голдстоун (антенна DSS-14) успешно проведены первые радиолокационные наблюдения околоземного астероида 2012 QG42. Получены два допплеровких измерения и два измерения дальности. В результате удалось уточнить орбиту изучаемого объекта. Ввиду большого периода вращения вокруг собственной оси, который сейчас оценивается в 24.4 часа, уточнить его радиолокацией не представляется возможным.

Повторные наблюдения на обсерватории Голдстоун будут проведены 17 сентября, так же, с 14 по 17 сентября запланирована радиолокация на 300-метровом радиотелескопе Аресибо.

The first radio observations of comet Elenin


American radio astronomers report that did not detect any water coming from any remains of comet Elenin. Amy Lovell observed it for 7 hours on Sept 7 using the Green Bank Telescope (it is not yet in the Arecibo declination window) and did not detect any OH line above the noise level of 2.4 mJy. This puts a limit of a few times 10molecules/second on the gas production rate, which is about 100 times less than earlier predictions. This data may confirm disintegration proccess in comet’s nucleus which stareted on mid August. The next radio observations may be carry out on October by Arecibo radio observatory, of course if we will see comet Elenin on images from SOHO spacecraft.

Radar observation of сomet Elenin may be done with the 300 meter Arecibo radio telecope

National Astronomy and Ionosphere Center

Comet C/2010 X1 ( Elenin) may be studied with the help of one of the biggest radio telescopes in the world – Arecibo. This only very recently became known. Lance Benner answered my letter having to do with the detection of NEOs with the help of the 70 meter Goldstone radio telescope. From his words we learn that finding a comet at a distance of 0.23 a.u. is a complex task for their radio telescope. For that purpose the gigantic 300 meter Arecibo radio telescope is better suited.

According to Ellen Howell, such work has been done at Arecibo and in 30-50% of the cases it has been successful. An application for four nights of observing time in the period from September 27 to November 10, 2011 has already been sent to the committee that apportions observing time. I hope these observations will all take place and that they will be successful!

June 2022
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