A Building-Sized Asteroid Will Fly Closer To Earth Than The Moon Today - Physics-Astronomy.org

A Building-Sized Asteroid Will Fly Closer To Earth Than The Moon Today

There are a lot of space rocks out there and we know very little about them. Most of them remain completely unknown to us, others get discovered only when they get too close to our planet. This is the case of asteroid 2019 SP3 which is flying over our heads today, October 3.




The celestial body is roughly the size of a building, between 15 and 33 meters (49 to 108 feet) in diameter. SP3's orbit is taking it slightly closer than the Moon is to Earth, roughly 370,000 kilometers (230,000 miles) from the planet surface, according to NASA’s data.
While this is certainly a “close approach” in cosmic terms, there’s nothing to worry about. The rock will continue in its orbit around the Sun undisturbed. It moves with a speed of 8.53 kilometers (5.3 miles) per second and does a full orbit in 1,416 days, almost four years.
While this object specifically poses no threat to us, it is a reminder of the potential risk we face from the heavens. The asteroid was only discovered on September 22. Other asteroids have discovered just hours before they flew by, and others have just hit us.
To get an idea of what would happen if 2019 SP3 were to hit our planet we can look to the Chelyabinsk event that occurred in 2013 when a meteor roughly the same size exploded over the Russian town. The asteroid burned up in the atmosphere creating a bright flash of light and releasing enough energy that a sonic boom shattered windows for 518 square kilometers (200 square miles), with over 7,200 damaged buildings and a collapsed factory roof. Over 1,600 non-direct injuries occurred, mainly due to flying glass.



content-1570112603-capture.JPG
Orbit of the planets and 2019 SP3. Position are exactly one year from now, for clarity. NASA

There are roughly 20,000 known near-Earth Asteroids divided into four families depending on their orbital parameters. About 10 percent of these are considered Potentially Hazardous Asteroids, or PHAs. Space agencies such as NASA and ESA are keeping an eye on the all and observatories and amateurs worldwide often serendipitously spot new ones.
The agencies also run "Asteroid Impact Simulation" exercises to plan and prepare for an asteroid impact. They win some, and lose some. The last one held earlier this year saw New York accidentally destroyed to save its projected target of Denver, highlighting the challenges we are likely to witness both before, during, and after the event if such a threat was discovered.



1 comment:

  1. I am Mrs. Dora Pless from USA, i want to share a testimony of my life to every one. i was married to my husband, and i love him so much we have been married for 4 years now with three kids. when he went for a vacation to Singapore he meant a lady called STEPHANIE, he told me that he is no longer interested in the marriage any more. i was so confuse and seeking for help, i don't know what to do until I met my friend miss joy and told her about my problem. she told me not to worry about it that she had a similar problem before and introduce me to a man called Dr. Ugo Wonders who is man of God for her ex and bring him back to her after 2days. Miss joy ask me to contact Dr. Ugo Wonders I contacted him to help me bring back my husband and he ask me not to worry about it that the God of his fore-fathers will fight for me. He told me by two days he will re-unite me and my husband together. After two day my husband called and told me he is coming back to sought out things with me, I was surprise when I saw him and he started crying for forgiveness. Right now I am the happiest woman on earth for what this great MAN OF God did for me and my husband, you can contact Dr. Ugo Wonders on any problem in this world, he is very nice, here is his EMAIL contact: generalspelltemple@gmail.com or call him on  +1 386-336-9876

    ReplyDelete

Powered by Blogger.