Month: December 2017

PMN-Portuguese Meteor Network and OLA-Observatório do Lago Alqueva agreement

The PMN-Portuguese Meteor Network installed two new video meteor detection systems at OLA-Observatório do Lago Alqueva. This private observatory is located near Monsaraz, a small historical village, at South East Portuguese territory, near the Spanish border and Europe’s greatest artificial lake Alqueva. This new observatory was build inside an unpolluted sky reserve known as Reserva Dark Sky® Alqueva, the first starlight tourism destination in the world. (https://www.facebook.com/observatoriolagoalqueva/). With these two new systems PMN-Portuguese Meteor Network has now sixteen working systems at seven different locations. (https://www.facebook.com/groups/656819951153819/). Now it is possible to have a new level of accurate meteor data, if meteor...

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Bright Geminids over Spain

2017 December 14, at 2:24 UT On Dec. 14, at 3:24 local time (2:24 universal time) this amazing Geminid meteor was spotted over Spain. The event was produced by a fragment from Asteroid Phaeton that hit the atmosphere at about 122.000 km/h. It began at an altitude of around 101 km over the province of Cordoba and ended at a height of about 43 km. It was recorded in the framework of the SMART Project (University of Huelva) from the astronomical observatories of La Hita (Toledo), Calar Alto (Almería), La Sagra (Granada), Huelva and Sevilla.   2017 December 14,...

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Results for the Leonid fireball 2017 November 19

By Paul Roggemans, Carl Johannink, Jean-Marie Biets, Martin Breukers, Robert Haas and Klaas Jobse 1  Introduction A brilliant Leonid fireball of magnitude -8 occurred right above the center of the CAMS BeNeLux network on 2017 November 19, 02h29m09s UT. It was captured by 7 CAMS cameras and several all-sky stations. The results obtained for this fireball are presented in this contribution. The first series of pictures and information about this fireball has been described in a previous post, see: http://meteornews.org/leonid-fireball-8-on-cams/. We add some more pictures of this impressive Leonid fireball and its persistent trail.   2  Radiant and orbit...

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October Camelopardalids by CAMS

CAMS BeNeLux collected 15 meteors belonging to a minor stream called the October Camelopardalids, (281 OCT) during routine CAMS observations on October 5, 2017. Radiant positions and orbital elements are in good agreement with previously reported results. 1  Introduction The weather in the first week of October 2017 was very unstable, so it is no surprise that our network could collect no more than 380 orbits during the few clear spells. Fortunately, October 5–6 was the best night for observing in this week. During this night 18 of the 21 stations had at least longer clear periods. They collected 99 orbits in this single night. 2  History In the course of the last century, observers noticed meteor activity from a region near the northern celestial pole, for instance in 1902, 1942 and 1976. On October 5, 2005 some video-observers in Finland (Moilanen, Yrjölä and Lyytinen) and Germany (Molau) captured several bright meteors from a radiant near the border of the constellations Draco and Camelopardalis. Moilanen captured 19 meteors in the period 17h06m– 22h41m UT. Twelve of them shared the same radiant. Most of these meteors appeared between 17h and 20h UT (Jenniskens et al., 2005). The mean radiant of these twelve meteors was calculated at RA = 164.1 ± 2.0 degrees and DE = 78.9 ± 0.5 degrees with a geocentric velocity of Vg = 46.9 ± 2.6 km/s. The mean...

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The Southern Delta Aquariids (SDA) in 2017

In 2017, extensive analysis could be done on observations of the Southern Delta Aquariids (SDA). The results were compared with those from 2008 (Johannink et al., 2008a; Johannink et al., 2008b) and 2011 (Johannink et al., 2011a; Johannink et al., 2011b). Overall, we can conclude that the population index r and the ZHR showed the same trend in 2017 as in 2008 and 2011. The ZHR of the SDA rises rapidly between λʘ 122°-125° followed by a plateau in activity between λʘ 125°-127° (ZHR 20-25). This is followed by a slow decline in ZHR after λʘ 128°. 1        Introduction...

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