Author: Carlos Saraiva

Another Fireball captured by Portuguese Meteor Network Cameras

Picture 1 Another fireball crossed last night 21 to 22th February the sky over Portugal. It was registered by TEMPLAR4 and RO2 systems from Portuguese Meteor Network (pictures 1 and 2). Picture 2 We were able to compose two MPEG videos from individual BMP frames from each camera (videos 1 and 2). http://meteornews.org/wp-content/uploads/2017/02/T4.mp4 Video 1 http://meteornews.org/wp-content/uploads/2017/02/SPO20170221.mp4 Video 2 Rui Gonçalves calculated its initial velocity as being 58400 m/s, beginning at 117,1 km high and ending at 76,4 km (pictures 3 and 4). Picture 3 Picture 4 With a negligible mass its magnitude was estimated to be -2,7 according to...

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Long and fast trail grazing meteor over Spain Portugal

Fireball atmospheric trajectory over southern Spain and Portugal   A long and fast trail grazing meteor with an absolute magnitude estimated of -2, was captured on 20th January under clear sky condition by three PMN (Portuguese Meteor Network) systems; TEMPLAR5, TEMPLAR2 and TEMPLAR4. TEMPLAR5 summed image (IPT-Tomar). TEMPLAR2 summed image (Linhaceira-Tomar). TEMPLAR4 summed image (Linhaceira-Tomar). The meteor started at East (Templar5 at 00:03:32-35), crossed from left to right Templar2’s entire field at south (00:03:34-37) and ended at southwest at Templar4’s field (00:03:37). Rui Gonçalves has calculated the trajectory, but unfortunately the meteor had traveled through PMN gaps, and only his systems caught this event. Systems from south Spain were under clouds. The baseline between Templar5 and Templar2&4 are only 9 km apart. Nevertheless, the trajectory seems correct (with interception plane’s angle of 1.8°) and 0.0° horizontal angle. UFOrbiter gives roughly the same result. The meteor was detected from 106.6 km to 113.0 km with an initial velocity of about 66.0 km/s. The velocity remains almost constant with small increase ?!. Estimated photometric mass is very small (about 1 g). Ground projection from UFOrbit software. At start, altitude is decreasing (for just 0,32 s) then altitude increases until the meteor vanished after a flight of about 300 km in the course of 4,6 s. The light curve values decreases also as the meteor interacts less and lesser with the thin upper...

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Huge Southern Taurid Fireball Over Portugal

An huge Southern Taurid with a magnitude estimated at -11, near full moon magnitude, entered the Iberian Peninsula atmosphere last 5 th November. It was registered from Lisbon and Tomar PMN-Portuguese Meteor Network systems. Unfortunately J. Madiedo’s system pointed to the West and Lisbon was obstructed from dense clouds. Calculating its trajectory and velocity, Rui Gonçalves estimated a descending trajectory from 108 to 59 km with an initial velocity of 28 +/- 0.5 km/s, with is one of the STA...

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Long grazing and slow trail fireball over Portugal

Fireball atmospheric trajectory over Portugal A long and slow trail meteor with an absolute magnitude estimated over -5 (fireball), captured on 25th October under high clouds condition by five PMN (Portuguese Meteor Network) systems; TEMPLAR1, TEMPLAR2 and TEMPLAR4, RO2 and RO3. Rui Gonçalves calculated its trajectory, velocity and estimate the initial mass. It was detected from 69.0 km to 54.0 km with an initial velocity of 14.0 km/s, remaining almost constant. Estimated photometric mass is over 250...

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Another long but slow trail meteor over Portugal

Fireball atmospheric trajectory over Portugal A long and slow trail meteor with an absolute magnitude estimated of -2, captured on 29th September early morning by four PMN (Portuguese Meteor Network) systems; TEMPLAR1 and TEMPLAR2, RO2 and RO3. RO3 summed image (near Lisboa). Rui Gonçalves calculated its trajectory, velocity and initial mass. It was detected from 94.7 km to 72.1 km with an initial velocity of 19.5 km/s. The estimated photometric mass is around 5 g. Corrected absolute magnitude versus time. Velocity fit versus height. Ground projection from UFO...

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