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Multiple event 2023-08-09 20:41:16 UTC    This event has been confirmed

Last trajectory update: 2023-08-10 05:11:58 UTC

Stations:

Fireball preview:

Uranoscope (FRIF03)
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Full size image detection Uranoscope (FRIF03) 2023-08-09 20:41:16 Universal Time
Orleans (FRCE01)
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Full size image detection Orleans (FRCE01) 2023-08-09 20:41:15 Universal Time
Rochechouart (FRLI01)
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Full size image detection Rochechouart (FRLI01) 2023-08-09 20:41:15 Universal Time
Saint-Michel-l'Observatoire (FRPA03)
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Full size image detection Saint-Michel-l'Observatoire (FRPA03) 2023-08-09 20:41:16 Universal Time
Marseille (FRPA01)
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Full size image detection Marseille (FRPA01) 2023-08-09 20:41:16 Universal Time
Saint-Lupicin (FRFC04)
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Full size image detection Saint-Lupicin (FRFC04) 2023-08-09 20:41:16 Universal Time
Coulounieix-Chamiers (FRAQ06)
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Full size image detection Coulounieix-Chamiers (FRAQ06) 2023-08-09 20:41:15 Universal Time
Pierres (FRCE04)
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Full size image detection Pierres (FRCE04) 2023-08-09 20:41:15 Universal Time
Caussols (FRPA05)
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Full size image detection Caussols (FRPA05) 2023-08-09 20:41:16 Universal Time
Vannes (FRBR04)
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Full size image detection Vannes (FRBR04) 2023-08-09 20:41:16 Universal Time
Le Bleymard (FRLR04)
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Full size image detection Le Bleymard (FRLR04) 2023-08-09 20:41:16 Universal Time
Dijon (FRBO01)
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Full size image detection Dijon (FRBO01) 2023-08-09 20:41:16 Universal Time
Epinal (FRLO02)
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Full size image detection Epinal (FRLO02) 2023-08-09 20:41:16 Universal Time
Marigny (FRPC04)
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Full size image detection Marigny (FRPC04) 2023-08-09 20:41:15 Universal Time
Onet-le-Château (FRMP07)
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Full size image detection Onet-le-Château (FRMP07) 2023-08-09 20:41:16 Universal Time
Nantes (FRPL01)
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Full size image detection Nantes (FRPL01) 2023-08-09 20:41:15 Universal Time
Cahors (FRMP05)
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Full size image detection Cahors (FRMP05) 2023-08-09 20:41:16 Universal Time
Troyes (FRCA04)
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Full size image detection Troyes (FRCA04) 2023-08-09 20:41:15 Universal Time
Querqueville (FRNO01)
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Full size image detection Querqueville (FRNO01) 2023-08-09 20:41:16 Universal Time
Grenoble (FRRA01)
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Full size image detection Grenoble (FRRA01) 2023-08-09 20:41:16 Universal Time
Aubusson (FRLI03)
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Full size image detection Aubusson (FRLI03) 2023-08-09 20:41:15 Universal Time
Albi (FRMP04)
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Full size image detection Albi (FRMP04) 2023-08-09 20:41:16 Universal Time
Rouen (FRNO05)
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Full size image detection Rouen (FRNO05) 2023-08-09 20:41:16 Universal Time
Angers (FRPL03)
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Full size image detection Angers (FRPL03) 2023-08-09 20:41:15 Universal Time
Roanne (FRRA07)
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Full size image detection Roanne (FRRA07) 2023-08-09 20:41:16 Universal Time
Nancay - Pôle des étoiles (FRCE02)
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Full size image detection Nancay - Pôle des étoiles (FRCE02) 2023-08-09 20:41:15 Universal Time
Aubenas (FRRA06)
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Full size image detection Aubenas (FRRA06) 2023-08-09 20:41:16 Universal Time
Le Vaudoué (FRIF06)
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Full size image detection Le Vaudoué (FRIF06) 2023-08-09 20:41:16 Universal Time
Eastbourne (ENSE03)
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Full size image detection Eastbourne (ENSE03) 2023-08-09 20:41:16 Universal Time

Geographical distribution

Trajectory:

Event newer than 2023-01-01 00:00:00 are not yet released

Astrometry:

Because the FRIPON camera frame rate in 30/s and the filed of view is AllSky, the star limiting magnitude if barely 0 mag.
This prevents us from correctly perform the astro-photometry calibration. To overcome this difficulty, a long exposure image (5 sec) is taken once every 10 min.
This allows to detect star of up to magnitude 4, without disturbing the usual meteor detection process.
In order to bypass the weather limitation, a global astrometry calibration is performed once a month.
All detected stars are plotted together (green) in each of the figure shown below.
The rotation of the Earth creates star trails, except around the Polar star, which is therefore easily spotted.
The fireball is plotted in blue. The details of the method may be found in Jeanne et al 2019: Calibration of fish-eye lens and error estimation on fireball trajectories: application to the FRIPON network, A&A

Uranoscope (FRIF03)
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FRIF03_astro.png
Orleans (FRCE01)
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FRCE01_astro.png
Rochechouart (FRLI01)
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FRLI01_astro.png
Saint-Michel-l'Observatoire (FRPA03)
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FRPA03_astro.png
Marseille (FRPA01)
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FRPA01_astro.png
Saint-Lupicin (FRFC04)
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FRFC04_astro.png
Coulounieix-Chamiers (FRAQ06)
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FRAQ06_astro.png
Pierres (FRCE04)
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FRCE04_astro.png
Caussols (FRPA05)
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FRPA05_astro.png
Vannes (FRBR04)
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FRBR04_astro.png
Le Bleymard (FRLR04)
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FRLR04_astro.png
Dijon (FRBO01)
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FRBO01_astro.png
Epinal (FRLO02)
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FRLO02_astro.png
Marigny (FRPC04)
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FRPC04_astro.png
Onet-le-Château (FRMP07)
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FRMP07_astro.png
Nantes (FRPL01)
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FRPL01_astro.png
Cahors (FRMP05)
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FRMP05_astro.png
Troyes (FRCA04)
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FRCA04_astro.png
Querqueville (FRNO01)
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FRNO01_astro.png
Grenoble (FRRA01)
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FRRA01_astro.png
Aubusson (FRLI03)
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FRLI03_astro.png
Albi (FRMP04)
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FRMP04_astro.png
Rouen (FRNO05)
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FRNO05_astro.png
Angers (FRPL03)
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FRPL03_astro.png
Roanne (FRRA07)
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FRRA07_astro.png
Nancay - Pôle des étoiles (FRCE02)
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FRCE02_astro.png
Aubenas (FRRA06)
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FRRA06_astro.png
Le Vaudoué (FRIF06)
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FRIF06_astro.png
Eastbourne (ENSE03)
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ENSE03_astro.png

Pipeline previews:

Trajectory view:

First graph: line of sights, from FRIPON cameras to the fireball. The plots are provided in a plane normal to the best fitted trajectory. Its origin lies at the crossing of all lines of sight.
Second graph: zoom of the previous figure, extending to 1-sigma (blue) and 2-sigma (green) confidence interval.
This allows us to double check the presence of systematic biases in the calibration process.
The details of the method may be found in Jeanne et al 2019: Calibration of fish-eye lens and error estimation on fireball trajectories: application to the FRIPON network, A&A

LDV
ldv.png
LDV Zoom
ldv_zoom.png

Trajectory fit:

Bright flight
altitude.png
Bolide altitude as a function of time. If the timing of one of the stations is not good we will have a second curve.
Residuals (arc min)
residues.png
Residuals (meter)
mresidues.png

Atmospheric drag:

First graph: Fireball velocity as function of altitude. Black dots are computed using a 5 position sliding average. The red line represents the ablation and drag model. As fragmentation is not considered, light curve spikes and sudden deceleration events are not considered.
Second graph: the residuals of the fit.
The details of the method may be found in Jeanne et al 2019 Calibration of fish-eye lens and error estimation on fireball trajectories: application to the FRIPON network, A&A

Bolide Velocity
velocity.png
Residuals (arc min)
residue.png
V0-A correlation
V_A.png

Likelihood of the model of ablation and drag of the fireball. Each point represents a set of parameters (V0, A, B). These points are drawn evenly in this space parameters, then represented in the plane (V0, A). A corellation of parameters V0 and A leads to a decentering of the group of points. Conversely, a centered cloud indicates that the model is correctly adjusted, and that the A and Vo parameters are reliable. The unbiased determination of the parameter A (drag) is essential for the determination of the initial mass, as the initial speed V0 for determining the orbit. For precise information, refer to the article by F. Colas et al 2020 : FRIPON: a worldwide network to track incoming meteoroids, A&A

A-B correlation
A_B.png

Likelihood of the model of ablation and drag of the fireball. Each point represents a set of parameters (V0, A, B). These points are drawn evenly in this space parameters, then represented in the plane (A,B). A corellation of parameters A and B leads to a decentering of the group of points. Conversely, a centered cloud indicates that the model is correctly adjusted, and that the A and B parameters are reliable. The unbiased determination of the parameter B (ablation) is essential for the determination of the final mass mass. For precise information, refer to the article by F. Colas et al 2020 : FRIPON: a worldwide network to track incoming meteoroids, A&A

Photometry:

Fireball absolute magnitude as a function of altitude, as deduced from the measurements performed by each camera.
The absolute magnitude is the magnitude the fireball would present at an altitude of 100km at the zenith.
If the weather is perfectly clear at all stations, all absolute magnitude curves overlap.
In reality, atmospheric extinction due to the presence of clouds might induce biases. In addition, the photometry calibration is performed once a month (similarly to astrometry calibration).
The details of the method may be found in Jeanne et al 2019:Calibration of fish-eye lens and error estimation on fireball trajectories: application to the FRIPON network, A&A

Photometry
lightcurve_vs_Height_clean.png
Photometry
lightcurve_vs_Height_separate.png
Photometry
lightcurve_vs_Time_separate.png

Orbit:

The 3D (left) and 3D (right) orbit of the meteoroid responsible for the detected fireball is shown in heliocentric ecliptic J2000 frame.
Units are astronomical units (AU). The 4 first cercles represent the orbits of Mercury, Venus, Earth and Mars.

3D orbit
orbit.png
Orbit projected on the ecliptic
orbitXY.png
3D Orbit
3d_orbit.png
Orbit projected on the ecliptic
2d_orbit.png

Copyright © 2023 All rights reserved. Data collected, processed and displayed by FRIPON Team with the support of the OSU Pythéas IT service. Please contact FRIPON Team for any use.