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Post Info TOPIC: October Camelopardalis meteor shower


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RE: October Camelopardalis meteor shower
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Around this time last year, an amateur astronomer J. Moilanen detected a new meteor shower which originate from a hitherto unknown comet.
The comet is believed to have an orbit period of about 4,000 year. But what is worrying is that its orbit brings it to just inside the Earth's orbit; this makes it a potentially dangerous long-period comet.



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October Camelopardalis NEA
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October 5 was a suspected date of outburst events, with earlier anecdotal reports dating from 1902 (λo = 192.006 - 50 light tracks behind clouds by G. Percey Bailey (1902), 1942 (λo = 192.8 - significant shower of + 3 meteors, radiating from near Cassiopeia, by Werner Sandner (1943) while in Russia (see also: Teichgraeber 1943), and 1976 (λo =193.34, 113 meteors N > E by E. Root, Pompano Beach, Florida (Root 1976, MacKenzie 1980).

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RE: October Camelopardalis meteor shower
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Unexpected Meteor Shower Reveals Presence of Potentially Dangerous Comet
SETI Institute scientist and meteor expert Peter Jenniskens reports in a telegram issued by the International Astronomical Union's Minor Planet (SSSB) Centre that an unexpected burst of meteors on October 5, 2005 has occurred, which betrayed the presence of a thus far unknown, potentially Earth-threatening, comet.

"Jarmo Moilanen (Finland), detected twelve meteors from a compact geocentric radiant at R. A. = 164.1 ± 2.0º, Decl. = +78.9 ± 0.5º, on the border of Draco and Camelopardalis, in the evening of October 5, 2005. The differential mass distribution index was a low s = 1.4 ± 0.2 (+0 to -6 magnitude). The new shower was confirmed by Esko Lyytinen (2 meteors, early period only, located at 25.00 E; +60.25 N) and Ilkka Yrjölä (4 meteors: 26.4 E, +60.9 N) at nearby locations, and by Sirko Molau in Germany (7 meteors). Esko Lyytinen calculated an apparent speed of Vg = 47.3 ± 0.5 km/s from one two-station meteor, close to the parabolic limit. We conclude that the event was caused by the 1-revolution dust trail of a yet unidentified potentially Earth-threatening (Halley-type or) Intermediate Long-Period comet with orbital elements similar to those of the meteoroids: Epoch = 2005 October 05, a = Inf. (15 - Inf.) AU, q = 0.993±0.001 AU, w = 170.5±1º, W = 192.59±0.04º , and i = 79.3±0.5º (J2000.0)."

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Finnish star-gazer discovers meteor shower - tail of new comet pinpointed
Meteor shower could be sign of comet that could come dangerously close to earth
Jarmo Moilanen, a municipal computer expert and amateur astronomer in the Finnish community of Vaala, has detected a new shower of meteors in the tale of a hitherto unknown comet.
Moilanen’s two monitoring cameras that he keeps pointed at the sky and linked to his computer, registered an unexpected meteor shower already in October last year.

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