Science

Revealed: The 5 asteroids set to come 'dangerously close' to Earth this year – including a huge space rock the size of the Golden Gate Bridge


It is understandable why a comet dubbed the ‘devil’ might strike fear into you.

Especially when this particular space rock is three times the size of Mount Everest and is currently exploding like a volcano on its way towards Earth.

Thankfully there’s no chance of 12P/Pons-Brooks actually hitting us, but it is expected to be visible to the naked eye when it makes its closest approach in June 2024.

That’s next year, however. What about the space rocks set to race by Earth before the end is out?

MailOnline takes a look at five of the rarest, largest and closest asteroids – as well as another comet – that stargazers can feast their eyes on over the next couple of months.

Look out! MailOnline takes a look at five of the rarest, largest and closest asteroids ¿ as well as a comet ¿ that stargazers can feast their eyes on over the next couple of months (pictured)

Look out! MailOnline takes a look at five of the rarest, largest and closest asteroids – as well as a comet – that stargazers can feast their eyes on over the next couple of months (pictured)

It took the enormous Chicxulub asteroid to wipe out the dinosaurs 66 million years ago.

Thankfully, NASA isn’t expecting us to meet a similar fate from space, but that hasn’t stopped it preparing a planetary defence strategy in the form of the Double Asteroid Redirection Test (DART), which proved successful last year.

So far the US space agency has discovered more than one million space rocks circling around our solar system, including 95 per cent of the asteroids that are greater than half a mile in size and at risk of coming close to our planet.

When it comes to solely the latter, there are currently more than 30,000 near-Earth objects (NEOS) identified, some of which are classified as ‘potentially hazardous’.

Among them are two we have explored below that you can catch a glimpse of next month.  

The designation is given to asteroids around 460ft (140m) in diameter that will orbit within about 0.5 astronomical units (4.6 million miles) of Earth’s path around the sun.

To put that into context, the moon orbits at an average distance of around 240,000 miles, so the potentially hazardous asteroids are dangerously close in an astronomical context but not in terms of us having to worry about it.

Nevertheless, here are five asteroids to keep an eye out for and how they stack up in terms of size, speed and closeness to Earth in 2023.

139622 (2001 QQ142)

What is it?

An Apollo-class asteroid. These are space rocks which cross the orbit of the Earth and are a major source of the meteorites that occasionally hit our planet.

How big is it?

This particular space rock is thought to be between 0.2 miles (0.347km) and one mile (1.552km) in diameter, which would make it comparable in size to the Golden Gate Bridge.

It is bigger than 97 per cent of all asteroids known to be swirling around in space. 

How it stacks up: This rendered image shows what 139622 (2001 QQ142) looks like in comparison to the size of Mount Everest on Earth

How it stacks up: This rendered image shows what 139622 (2001 QQ142) looks like in comparison to the size of Mount Everest on Earth

How long does it take to orbit the sun?

620 days 

When will it come closest to us?

The asteroid will have a close flyby to Earth on December 6 at a distance of 3.4 million miles (5.5 million km).

How fast is it travelling?

14,890mph (23,900 km/h)

Is it a potentially hazardous asteroid?

Yes

341843 (2008 EV5)

What is it?

An Aten-class asteroid. They are space rocks which spend the majority of their time hidden by the sun and have orbital periods of less than a year.

How big is it?

With a diameter of 1,300ft (0.4km), this asteroid is about the size of the US Capitol building, and is bigger than 90 per cent of all asteroids. 

How long does it take to orbit the sun?

343 days

When will it come closest to us?

341843 (2008 EV5) will have a close flyby to Earth five days before Christmas, on December 20, at a distance of 3.9 million miles (6.3 million km).

How fast is it travelling?

11,950mph (19,200 km/h)

Is it a potentially hazardous asteroid?

Yes

Terrifying: 341843 (2008 EV5) is about the size of the US Capitol building, astronomers say

Terrifying: 341843 (2008 EV5) is about the size of the US Capitol building, astronomers say

(2019 CZ2) 

What is it?

An Apollo-class asteroid 

How big is it?

(2019 CZ2) is a very small asteroid. It is comparable in size to an American school bus, with a diameter estimated to be between 68ft (21m) and and 308ft (94m).

Where is it now?

(2019 CZ2) is currently in the constellation of Pisces.

Comparison: (2019 CZ2) is a very small asteroid. It is about the size of an American school bus, with a diameter that is estimated to be between 68ft (21m) and and 308ft (94m)

Comparison: (2019 CZ2) is a very small asteroid. It is about the size of an American school bus, with a diameter that is estimated to be between 68ft (21m) and and 308ft (94m)

Explained: The difference between an asteroid, meteorite and other space rocks

An asteroid is a large chunk of rock left over from collisions or the early solar system. Most are located between Mars and Jupiter in the Main Belt.

A comet is a rock covered in ice, methane and other compounds. Their orbits take them much further out of the solar system.

A meteor is what astronomers call a flash of light in the atmosphere when debris burns up.

This debris itself is known as a meteoroid. Most are so small they are vapourised in the atmosphere.

If any of this meteoroid makes it to Earth, it is called a meteorite.

Meteors, meteoroids and meteorites normally originate from asteroids and comets.

For example, if Earth passes through the tail of a comet, much of the debris burns up in the atmosphere, forming a meteor shower.

How long does it take to orbit the sun?

605 days

When will it come closest to us?

This asteroid will make its next closest approach to Earth on November 25, at a distance of 666,000 miles (1.1 million km).

How fast is it travelling?

13,000mph (20,900 km/h)

Is it a potentially hazardous asteroid?

No, but it is a near-Earth asteroid

2020 YO3

What is it?

An Apollo-class asteroid 

How big is it?

Another small space rock, 2020 YO3 is estimated to be between 101ft (31m) and and 230ft (70m) in diameter.

This makes it an average-sized asteroid that is about the size of London’s famous landmark, Big Ben.

Where is it now?

Asteroid (NEO) 2020 YO3 is currently in the constellation of Corona Australis 

How long does it take to orbit the sun?

1,100 days

When will it come closest to us?

2020 YO3 will make its next flyby of our planet a festive one. It will pass by the Earth on December 23, at a distance of 847,000 miles (1.3 million km).

How fast is it travelling?

37,180mph (59,800 km/h)

Is it a potentially hazardous asteroid?

No, but it is a near-Earth asteroid

(2013 VX4) 

What is it?

An Apollo-class asteroid

How big is it?

(2013 VX4) is also on the smaller side as asteroids go, estimated to be between 144ft (44m) and and 325ft (99m) in diameter.

This is around the size of the Statue of Liberty in New York — a terrifying thought ploughing its way towards us.

Terrifying: The space rock (2013 VX4) is a very small asteroid comparable in size to the Statue of Liberty. This is how it would appear if it were to crash down on New York City

Terrifying: The space rock (2013 VX4) is a very small asteroid comparable in size to the Statue of Liberty. This is how it would appear if it were to crash down on New York City

How long does it take to orbit the sun?

912 days

When will it come closest to us?

2013 VX4 will make its next closest approach to Earth on December 4, when it will race passed us at a distance of around 1.2 million miles (1.9 million km).

How fast is it travelling?

14,700mph (23,600 km/h)

Is it a potentially hazardous asteroid?

No, but it is a near-Earth asteroid

And a bonus comet… 

The space rocks above are all asteroids. But what about comets similar to the ‘devil’ one expected to be visible in June 2024? Step up 144P/Kushida.

144P/Kushida 

144P/Kushida is a comet discovered on January 8, 1994 by amateur astronomer Yoshio Kushida in Japan. It has an orbital period of just 7.6 years, which is short compared to other comets.

The space rock will make its closest approach to Earth on December 12, before reaching its nearest point to the sun a month later on January 25, 2024. 

Although the comet reaches its maximum brightness only in 2024, stargazers in both hemispheres can catch a glimpse of it with the help of large binoculars and small telescopes by the end of 2023.

It is currently in the constellation of Aries but moving towards Earth at around 65,000 mph (105,000 km/h).

Glowing green: 144P/Kushida (pictured) is a comet discovered on January 8, 1994 by amateur astronomer Yoshio Kushida in Japan. It has an orbital period of just 7.6 years, which is short compared to other comets

Glowing green: 144P/Kushida (pictured) is a comet discovered on January 8, 1994 by amateur astronomer Yoshio Kushida in Japan. It has an orbital period of just 7.6 years, which is short compared to other comets

KILLING OFF THE DINOSAURS: HOW A CITY-SIZED ASTEROID WIPED OUT 75 PER CENT OF ALL ANIMAL AND PLANT SPECIES

Around 66 million years ago non-avian dinosaurs were wiped out and more than half the world’s species were obliterated.

This mass extinction paved the way for the rise of mammals and the appearance of humans.

The Chicxulub asteroid is often cited as a potential cause of the Cretaceous-Paleogene extinction event.

The asteroid slammed into a shallow sea in what is now the Gulf of Mexico.

The collision released a huge dust and soot cloud that triggered global climate change, wiping out 75 per cent of all animal and plant species.

Researchers claim that the soot necessary for such a global catastrophe could only have come from a direct impact on rocks in shallow water around Mexico, which are especially rich in hydrocarbons.

Within 10 hours of the impact, a massive tsunami waved ripped through the Gulf coast, experts believe.

Around 66 million years ago non-avian dinosaurs were wiped out and more than half the world's species were obliterated. The Chicxulub asteroid is often cited as a potential cause of the Cretaceous-Paleogene extinction event (stock image)

Around 66 million years ago non-avian dinosaurs were wiped out and more than half the world’s species were obliterated. The Chicxulub asteroid is often cited as a potential cause of the Cretaceous-Paleogene extinction event (stock image)

This caused earthquakes and landslides in areas as far as Argentina. 

While investigating the event researchers found small particles of rock and other debris that was shot into the air when the asteroid crashed.

Called spherules, these small particles covered the planet with a thick layer of soot.

Experts explain that losing the light from the sun caused a complete collapse in the aquatic system.

This is because the phytoplankton base of almost all aquatic food chains would have been eliminated.

It’s believed that the more than 180 million years of evolution that brought the world to the Cretaceous point was destroyed in less than the lifetime of a Tyrannosaurus rex, which is about 20 to 30 years.



READ SOURCE

This website uses cookies. By continuing to use this site, you accept our use of cookies.