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Wed, 20 Oct 2021
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Fireballs


Fireball 2

Meteor fireball over Spain on October 19

fireball
This fireball was spotted over Spain on 19 October 2021, at 7:11 local time (equivalent to 5:11 universal time). The bolide was generated by a rock (a meteoroid) from a comet that hit the atmosphere at about 90,000 km/h. The fireball began at an altitude of about 93 km over the center of the province of Cuenca (region of Castilla-La Mancha), and ended at a height of around 51 km over the northwest of the province of Valencia (Valencian Community).

This meteor was recorded in the framework of the SMART project, operated by the Southwestern Europe Meteor Network (SWEMN) from the meteor-observing stations located at La Hita (Toledo), Sierra Nevada, La Sagra (Granada), Calar Alto (Almería), and Sevilla. The event has been analyzed by the principal investigator of the SMART project: Dr. Jose M. Madiedo, from the Institute of Astrophysics of Andalusia (IAA-CSIC).


Info

The Hopewell Airburst Event

American cosmic airburst in late Roman times revealed by Tankersly and Saniel-Banrey of University of Cincinnati.
Chicxulub Impact Event
© Science
Meteorites, silicious vesicular melt glass, Fe and Si-rich magnetic spherules, positive Ir and Pt anomalies, and burned charcoal-rich Hopewell habitation surfaces demonstrate that a cosmic airburst event occurred over the Ohio River valley during the late Holocene. A comet-shaped earthwork was constructed near the airburst epicenter. Twenty-nine radiocarbon ages demonstrate that the event occurred between 252 and 383 CE, a time when 69 near-Earth comets were documented. While Hopewell people survived the catastrophic event, it likely contributed to their cultural decline. The Hopewell comet airburst expands our understanding of the frequency and impact of cataclysmic cosmic events on complex human societies.

Abstract — The Hopewell airburst event, 1699-1567 years ago(252-383 CE) — october 13, 2021

Fireball 3

Japanese astronomers record possible impact event on Jupiter

A group of Japanese astronomers just discovered a potential new impact at the planet Jupiter.
Impact Flash Jupiter
Get your scorecards out — Jupiter just took another interplanetary hit. If it's confirmed it would be the 11th observed comet or asteroid strike at the gas giant since the pieces of Comet Shoemaker-Levy 9 slammed into Jupiter in 1994.

A little more than a month after five amateurs independently recorded a similar flash, a team of astronomers, led by Ko Arimatsu of Kyoto University, filmed this most recent flare in Jupiter's cloud tops at 13:24 UT on Friday, October 15th.

The potential impact flash appears around the 12-second mark in this video of Jupiter made on Friday, October 15th.
Ko Arimatsu / Kyoto University

Fireball 2

Meteor fireball over California on October 19

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We received 32 reports about a fireball seen over CA on Tuesday, October 19th 2021 around 01:40 UT.

For this event, we received one video.


Fireball 2

Meteor fireball over California and 3 other states

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We received 131 reports about a fireball seen over AZ, CA, NV and UT on Sunday, October 17th 2021 around 03:47 UT.

For this event, we received 3 videos.


Fireball 2

Dramatic moment meteor fireball streaks across the sky above Leicester, UK

The meteor and its flaming tail are clearly visible in the top of the screenshot
© Reddit u/Jackster2
The meteor and its flaming tail are clearly visible in the top of the screenshot
Crystal-clear dashcam footage shows a meteor burning in the skies above England.

In the clip, recorded on Friday (October 15) at about 9:18pm in Leicester, a fireball hurtles towards the ground and is outlined dramatically against the black night sky.

The meteor is so visible you can see the fiery tail streaking behind it as it burns in Earth's atmosphere.

Since it was uploaded on Reddit last night by u/Jackster21 the footage has been watched thousands of times and people were impressed.


Fireball 2

Meteor fireball seen over California

fireball
© Mike L.
We received 6 reports about a fireball seen over CA on Wednesday, October 13th 2021 around 07:56 UT.

For this event, we received one video and one photo.


Comet 2

The mega-comet Bernardinelli-Bernstein will get as close as Saturn in 2031

Comet Comparison
© Will Gater. Used by permission.
A graphic comparing the size of Comet 2014 UN271 (Bernardinelli-Bernstein) to other solar system objects.
A mega-comet - potentially the largest ever discovered - is heading from the Oort Cloud towards our direction. Estimated to be 100-200 kilometers across, the unusual celestial wanderer will make its closest approach to the Sun in 2031. However, the closest it will come to Earth is to the orbit of Saturn.

Astronomers say Comet Bernardinelli-Bernstein (C/2014 UN271) could be the largest member of the Oort Cloud ever detected, and it is the first comet on an incoming path to be detected so far away.

The graphic above, by astronomer Will Gater compares the size of the comet to other Solar System objects.

The comet was discovered Pedro Bernardinelli and Gary Bernstein, from the University of Pennsylvania earlier this year. They were scouring through data from the 570-megapixel Dark Energy Camera (DECam) on the Víctor M. Blanco 4-meter Telescope in Chile. They found data of this object that was originally collected from 2014-2018, which did not show a typical comet tail, and the object was therefore thought to be a dwarf planet.

But within a day of the announcement of its discovery via the Minor Planet Center, astronomers using the Las Cumbres Observatory network took new images which revealed that it has grown a coma in the past 3 years, and that it was rapidly moving rapidly through the Oort Cloud. The object was then officially classified as a comet.

Fireball 2

Meteor fireball over Spain on October 13

fireball
This fireball was spotted over Spain on 13 October 2021, at 22:29 local time (equivalent to 20:29 universal time). The bolide was generated by a rock from asteroid 2010UB that hit the atmosphere at about 47,000 km/h. The fireball began at an altitude of about 81 km over the west of the province of Valencia (Valencian Community, Spain), and ended at a height of around 32 km over the province of Cuenca (region of Castilla-La Mancha).

This meteor was recorded in the framework of the SMART project, operated by the Southwestern Europe Meteor Network (SWEMN) from the meteor-observing stations located at La Hita (Toledo), Sierra Nevada, La Sagra (Granada), Calar Alto (Almería), and Madrid (Dr. Jaime Izquierdo, Universidad Complutense de Madrid). The event has been analyzed by the principal investigator of the SMART project: Dr. Jose M. Madiedo, from the Institute of Astrophysics of Andalusia (IAA-CSIC).


Fireball 2

Meteor fireball seen over Georgia and 6 other states

fireball
© Ed A.
We received 130 reports about a fireball seen over AL, FL, GA, NC, SC, TN and VA on Monday, October 11th 2021 around 02:05 UT.

For this event, we received 5 videos and one photo.