More than 60 reports
The International Meteor Organization have received 65 reports so far about of a fireball event seen above Southern France on August, 4th 2017 around 23:10 French Time (21:10 UT). The fireball was seen primarily from Southern France – witnesses from Biarritz to Montpellier and even from Lyon reported the event. The majority of the reports have been submitted through the REFORME (FR) version of the AMS/IMO online fireball form.
Submit an Official Fireball Report
If you have photo and/or video of the event, please use the AMS version of the form (English only).
Envoyer un rapport d’observation
Si vous avez une photo ou une video de cet évènement utilisez cette version du formulaire (en anglais uniquement).
The map on top of this article shows the witnesses location with the first estimated trajectory. The preliminary estimated trajectory plotted from the witness reports shows the meteor was traveling from the Southeast to Northwest and ended its visible flight near La Douze (Dordogne – south east of Périgueux).
Below is the first 3D trajectory estimation of the event (available in KML format from the American Meteor Society page of the event). This trajectory still need to be redefined.
There are currently more than 170 reports that have been submitted to the IMO/AMS, and a lot of them are still being submitted. In the meantime the team in charge of FRIPON network published their results by taking into account detections of the fireballs on 10 of their stations. The trajectory deduced from these analysis is much more accurate than the ones deduced from the visual reports. According to calculations, the meteoroid entered the Earth atmosphere with a speed of 16.8 km/s and a 20° inclination relative to the horizontal. The meteor started its bright path at the border between the two departments of Tarn and Tarn-et-Garonne, between Bruniquel and Septfonds villages (lat. ~ 44° 06′ N ; lon. ~ 001° 39′ E). The meteor itself remained visible for approximately 7 seconds, while it crossed around 120 km of atmosphere, with a North-North-West direction (Azimuth ~ 335°), before starting its dark flight at a 37 km altitude and at a 7.8 km/s speed, above the Vézère river, near Peyzac-le-Moustier village (lat. ~ 44° 59′ N ; lon. ~ 001° 04′ E). According to all those parameters, meteorite recovery seems very unlikely.
Orbital elements of the meteoroid are the following:
Time (MJD) = 57970.6878125
Perihelion distance, q = 0.82832832682 AU*
Semimajor axis, a = 1.87360561305 AU
Eccentricity, e = 0.557896111621
Inclination, i = 4.30274091339°
Longitude of the ascending node = 312.440141826°
Argument of perihelion = 60.7900369827°
True anomaly = 343.799618006°
* AU = Astronomical Unit