Nice please. No more jokes.

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Loeb, was just saying we were struck by one 40 years go. Looked like Oumuamua.

https://arxiv.org/abs/1904.07224

Discovery of a Meteor of Interstellar Origin
Amir Siraj, Abraham Loeb
(Submitted on 15 Apr 2019 (v1), last revised 20 Apr 2019 (this version, v2))

The first interstellar object, `Oumuamua, was discovered in the Solar System by Pan-STARRS in 2017, allowing for a calibration of the abundance of interstellar objects of its size ∼100 m. One would expect a much higher abundance of smaller interstellar objects, with some of them colliding with Earth frequently enough to be noticeable. Based on the CNEOS catalog of bolide events, we identify the ∼0.45m meteor detected at 2014-01-08 17:05:34 UTC as originating from an unbound hyperbolic orbit with an asymptotic speed of v∞∼43.8+12.9−31.2kms−1 outside of the solar system. Its origin is approximately towards R.A. 51.1∘+14.6∘−40.5∘ and declination +10.4∘+2.2∘−11.8∘, implying that its initial velocity vector was 57±24kms−1 (all error bars representing ±2σ) away from the velocity of the Local Standard of Rest (LSR). Its high LSR speed implies a possible origin from the deep interior of a planetary system or a star in the thick disk of the Milky Way galaxy. The local number density of its population is 106+0.75−1.5AU−3 or 9×1021+0.75−1.5pc−3 (necessitating 0.2 - 20 Earth masses of material to be ejected per local star). This discovery enables a new method for studying the composition of interstellar objects, based on spectroscopy of their gaseous debris as they burn up in the Earth's atmosphere.

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On the Berkeley Newsletter there is an interesting article about a site in North Dakota where many remains of trees, fishes and other living matter were found all frozen after the asteroid strike of 66 million years ago which killed the dinosaurs by hitting the Yucatan Peninsula in Mexico. They were covered by sand and then by tectites which formed in the atmosphere due to the heat wave caused by the impact, so they were like embalmed and are now being studied. One of the researchers is the son of Nobel prize Louis Alwarez who was the first to hypotize that the asteroid strike had killed the dinosaurs.
Tullio

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NASA and FEMA Will Simulate an Impending Asteroid Strike Next Week

NASA, FEMA, and other national and international agencies are once again gearing up for a hypothetical asteroid impact preparedness scenario. They hope to learn the best strategies for responding to a potential strike, starting from the moment a threatening asteroid is first detected by astronomers.

A nearly mile-wide asteroid, 1999 KW4, which has a very closely orbiting moon about 1/3 its size, will pass close to Earth on Saturday, May 25th. Although it is classed as a Near Earth Asteroid, it will not pass so close as to present any danger. This is the largest asteroid expected to pass this near Earth for some years to come.

Please find a linked article, below, for further information.

https://www.nbcnews.com/mach/science/mile-wide-asteroid-its-tiny-moon-zoom-past-earth-this-weekend-ncna1009381

Just saving the thread before it closes.

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An asteroid just buzzed past Earth, and we barely noticed in time - July 25, 2019 2.41am EDT
http://theconversation.com/an-asteroid-just-buzzed-past-earth-and-we-barely-noticed-in-time-120972

"A 100-metre-wide asteroid, 2019 OK, passed just 70,000km from Earth on Thursday, Australian time. It was discovered by the Brazilian SONEAR survey just days ago, and its presence was announced mere hours before it zoomed past our planet. The lack of warning shows how quickly potentially dangerous asteroids can sneak up on us."

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Apr 3, 1999 - May 3, 2020

I doubt we will see 'the one that gets us' much sooner than the dinosaurs did.

Which is a blessing as who wants to be tortured with a two day or week or month long countdown to doomsday?

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"Sour Grapes make a bitter Whine." <(0)>

2006 QQ23 shall arrive on August 10 at a distance of 7.5 million km to the Southern hemisphere. It should be from 250 to 520 meters wide.
Tullio

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I'd prefer not to know if it's only three, six even 12 months out.. Can you imagine the chaos if we knew...

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I'd prefer not to know if it's only three, six even 12 months out.. Can you imagine the chaos if we knew...

Yeah, where would we go anyway, even if there was a place to go and a way to get there only a few hundred humans would be able to go.

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Bob DeWoody

My motto: Never do today what you can put off until tomorrow as it may not be required. This no longer applies in light of current events.

7.5 million km.....
That's well outside one Lunar orbit distance (380 thousand km), so I think I'll rest easy for now.

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Bob Smith
Member of Seti PIPPS (Pluto is a Planet Protest Society)
Somewhere in the (un)known Universe?

A small asteroid of concern, 2006 QV89, will safely pass Earth's orbit on 2019-Sep-27 03:54 UT ± < 00:01
https://cneos.jpl.nasa.gov/news/news204.html
Explains why this "small" asteroid was of particular concern, and what measures have been taken to confidently assess its real threat level
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https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2006%20QV89;old=0;orb=0;cov=0;log=0;cad=0#orb
https://cneos.jpl.nasa.gov/ca/
https://www.jpl.nasa.gov/asteroidwatch
https://minorplanetcenter.net/

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Apr 3, 1999 - May 3, 2020

2nd.Interstellar visitor named 2I/Borisov : discussion

Asteroid may collide with Earth, ESA warns: 'Non-zero... probability'
https://www.foxnews.com/science/asteroid-2019su3-collide-earth-esa-warns

Asteroids known as near-Earth objects are among the most dangerous space items, with space agencies around the world keeping a close eye on them. The European Space Agency is paying particular attention to asteroid 2019 SU3, which may collide with Earth as soon as 70 years from now.

The space rock was recently added to the ESA's Risk List due to the potential for it to collide with Earth on Sept. 16, 2084.

Won't be around by then. :(

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Asteroid may collide with Earth, ESA warns: 'Non-zero... probability'
https://www.foxnews.com/science/asteroid-2019su3-collide-earth-esa-warns

At 0,58 to 7,59 lunar distances, that could potentially be a close shave indeed :)

Asteroids known as near-Earth objects are among the most dangerous space items, with space agencies around the world keeping a close eye on them. The European Space Agency is paying particular attention to asteroid 2019 SU3, which may collide with Earth as soon as 70 years from now. The space rock was recently added to the ESA's Risk List due to the potential for it to collide with Earth on Sept. 16, 2084.

Won't be around by then. :(

Well, we'll both have to aim for 2019 SU3's 2051 visit, which will be safe but will have a similarly impressive magnitude of 27 ^^

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Apr 3, 1999 - May 3, 2020

$25,000 reward offered by museum for a chunk of the Missouri meteor
https://fox2now.com/2019/11/13/25000-reward-offered-by-museum-for-a-chunk-of-the-missouri-meteor/

ST. LOUIS, Mo. — A $25,000 reward is being offered by the Maine Mineral and Gem Museum for part of a meteorite that was seen streaking past St. Louis Monday night. The prize goes to the person to bring in the first piece of the meteorite that weighs at least one-kilogram. That is just over two pounds of space rock.

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US meteorite adds to origins mystery
https://www.bbc.com/news/science-environment-50419924

In January 2018, a falling meteorite created a bright fireball that arced over the outskirts of Detroit, Michigan, followed by loud sonic booms.

The visitor not only dropped a slew of meteorites over the snow-covered ground, it also provided information about its extra-terrestrial source.

Although tens of thousands of meteorites have been recovered by humans, scientists have only been able to trace the orbits of a small number. Most of these have been calculated in the last decade.

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Asteroids come in all shapes and sizes, and now astronomers at MIT and elsewhere have observed an asteroid so heavily cratered that they are dubbing it the “golf ball asteroid.”

The asteroid is named Pallas, after the Greek goddess of wisdom, and was originally discovered in 1802. Pallas is the third largest object in the asteroid belt, and is about one-seventh the size of the moon. For centuries, astronomers have noticed that the asteroid orbits along a significantly tilted track compared with the majority of objects in the asteroid belt, though the reason for its incline remains a mystery.

Details Revealed of Asteroid So Heavily Cratered It’s Been Dubbed the “Golf Ball Asteroid”
https://scitechdaily.com/details-revealed-of-asteroid-so-heavily-cratered-its-been-dubbed-the-golf-ball-asteroid/

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There is a comet near Venus in the evening. It should brighten like Venus in May.
Tullio

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