Figuring Out Mysterious Meteorite: Speed, Trajectory & More

In summary, The speaker has observed a meteorite that appeared to be a slow-moving rock containing sodium, based on information from the American Meteor Site. The meteorite traversed 5 degrees of arc in 3 seconds and disappeared at an angle of 30 degrees to the horizon, indicating an estimated height of 32km at a distance of 68km. The object was moving at 10 degrees below horizontal. The average velocity of meteors in the solar system is about 40,000 km/sec, with the main variable being the direction of approach to Earth. Meteors observed before midnight tend to travel more slowly relative to Earth than those observed after midnight.
  • #1
H2Bro
166
4
Hello,

I have figured out the basics so far, but perhaps someone could help me figure out a bit more.

I observed this meteorite moving across the sky, looking like a low airplane glowing bright bright orange. from the american meteor site (http://www.amsmeteors.org/fireballs/faqf/#1), this likely indicates it was a slower moving rock containing sodium.

In about 3 seconds it traversed 5 degrees of arc, before winking out altogether at roughly an angle of 30 degrees to the horizon. Rock stops ablating around 2km/s, so I roughly estimate its height to be around 32km at a direct line of distance of 68km.

The object itself was moving at roughly 10 degrees below horizontal.

Using this, is it possible to find out how fast it was traveling when it first entered the atmosphere?
 
Astronomy news on Phys.org
  • #2
The average velocity of meteors in the solar system is pretty consistent. The main variable is the direction of approach to earth. If you assume the average velocity is about 40,000 km/sec discounting Earth velocity relative to the direction of approach you will be in the right range. Meteors observed before midnite are generally traveling more slowly relative to Earth than meteors that enter the atmosphere after midnite.
 

1. How do scientists determine the speed of a meteorite?

Scientists use a combination of observational data and mathematical calculations to determine the speed of a meteorite. They measure the distance the meteorite has traveled and the time it took to travel that distance. By dividing the distance by the time, they can determine the speed of the meteorite.

2. How is the trajectory of a meteorite calculated?

The trajectory of a meteorite is calculated by analyzing its path of travel and using mathematical equations to determine its trajectory. This involves measuring the angle of entry, the speed, and the location of impact to determine the exact path the meteorite took as it entered Earth's atmosphere.

3. What factors can affect the speed and trajectory of a meteorite?

The speed and trajectory of a meteorite can be affected by several factors, including its size, shape, density, and composition. The angle of entry and the density of the atmosphere can also play a role in determining the speed and trajectory of a meteorite.

4. How do scientists determine the composition of a meteorite?

Scientists analyze the chemical and mineral composition of a meteorite by conducting various tests, such as spectroscopy and X-ray diffraction. These tests can provide valuable information about the elements and compounds present in the meteorite, which can help determine its origin and history.

5. Why is it important to study the speed and trajectory of meteorites?

Studying the speed and trajectory of meteorites can provide valuable insights into the formation and evolution of our solar system. It can also help us understand potential hazards posed by near-Earth objects and improve our ability to track and predict future meteorite impacts. Additionally, studying meteorites can provide valuable information about the composition of other planets and celestial bodies in our solar system.

Similar threads

  • Astronomy and Astrophysics
Replies
5
Views
8K
  • Sci-Fi Writing and World Building
Replies
21
Views
1K
  • Astronomy and Astrophysics
Replies
5
Views
3K
  • Sci-Fi Writing and World Building
Replies
17
Views
6K
  • Programming and Computer Science
Replies
1
Views
1K
Replies
6
Views
2K
  • Earth Sciences
Replies
16
Views
4K
Back
Top