Figuring Out Mysterious Meteorite: Speed, Trajectory & More

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SUMMARY

The discussion focuses on analyzing the speed and trajectory of a meteorite observed moving across the sky, resembling a glowing orange airplane. The meteorite likely contained sodium, indicating a slower speed, and traversed 5 degrees of arc in approximately 3 seconds before disappearing at an angle of 30 degrees to the horizon. The estimated height of the meteorite was around 32 km, with a direct line of distance of 68 km. The average velocity of meteors is approximately 40,000 km/s, with variations based on the time of observation and direction of approach.

PREREQUISITES
  • Understanding of meteorite composition and characteristics
  • Basic knowledge of astronomical measurements and angles
  • Familiarity with atmospheric entry dynamics
  • Knowledge of meteor velocity averages and their variations
NEXT STEPS
  • Research the effects of atmospheric entry on meteorite speed and composition
  • Learn about the methods for calculating meteor trajectories
  • Study the differences in meteor behavior before and after midnight
  • Explore the role of sodium in meteorite visibility and characteristics
USEFUL FOR

Astronomers, meteor enthusiasts, and students studying celestial phenomena will benefit from this discussion, particularly those interested in meteorite observation and analysis.

H2Bro
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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?
 
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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.
 

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