منابع مشابه
Large meteoroids produced by comet 7P/Pons-Winnecke
By using high-sensitivity CCD video devices we have analyzed the activity of the June Bootid (JBO) meteor shower. This monitoring has provided an opportunity to analyze the physico-chemical properties of large meteoroids produced by comet 7P/Pons-Winnecke. The analysis of a fireball produced by a meteoroid with a mass of about 257 kg is presented here.
متن کاملComet Dust from Airborne Leonid Storm Observations
For the past five years, rare Leonid meteor storms offered unique access to cometary dust by spectacular manifestations of recently ejected dust grains, which could be observed by exceptional meteor observing techniques. The final storms, those of November 19, 2002, measured the dust distribution in a comet dust trail far from the position of the comet itself. The measured spatial and particle ...
متن کاملRadar observations of 8P/Tuttle: A contact-binary comet
Arecibo radar imagery of Comet 8P/Tuttle reveals a 10-km-long nucleus with a highly bifurcated shape consistent with a contact binary. A separate echo component was also detected from large (>cm-size), slow-moving grains of the type expected to contribute to the Ursid meteor stream. ! 2009 Elsevier Inc. All rights reserved.
متن کاملRadar observations of Comet 2P/Encke during the 2003 apparition
The nucleus of Comet 2P/Encke was detected with the Arecibo radar during the close approach of November, 2003, making this the first comet to yield radar detections at two different apparitions. Although the measured radar cross section of 1.0 km2 was close to that obtained in 1980, the Doppler bandwidth was nearly four times larger. Most of this bandwidth difference can simply be attributed to...
متن کاملSuperWASP observations of the 2007 outburst of Comet 17P/Holmes
We present wide-field imaging of the 2007 outburst of Comet 17P/Holmes obtained serendipitously by SuperWASP-North on 17 nights over a 42-night period beginning on the night (2007 October 22–23) immediately prior to the outburst. Photometry of 17P’s unresolved coma in SuperWASP data taken on the first night of the outburst is consistent with exponential brightening, suggesting that the rapid in...
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ژورنال
عنوان ژورنال: Astronomische Nachrichten
سال: 1884
ISSN: 0004-6337,1521-3994
DOI: 10.1002/asna.18841081704