H chondrites are the most common ordinary chondrite class, and ordinary chondrites dominate recorded meteorite falls. The video derives a roughly 70-to-one chondrite-to-iron impact comparison from a 17-to-one spectral estimate and density assumptions; it is not a confirmed 70-to-one abundance count. Chondrites are about half as dense as iron meteorites. Most small chondritic bodies break up in the atmosphere, though a roughly 10-metre object can produce a Hiroshima-scale airburst and cause local damage. The cosmic traffic never stops. ☄️
Video estimates a 70:1 chondrite-to-iron impact ratio, not abundance
Key facts
- H chondrites are a compositional group within ordinary chondrites, not a species; objects in space are meteoroids or asteroids, while meteorites are recovered fragments.
- H chondrites are the most abundant ordinary chondrite group, making up about 39–40% of ordinary chondrites, and ordinary chondrites dominate recorded falls.
- The video cites a 17:1 spectral estimate and combines it with density and collision assumptions to derive a roughly 70:1 impact comparison. The cited meteorite-fall data do not establish a 70:1 near-Earth abundance ratio.
- Chondrites have a bulk density of roughly 3.3–3.7 g/cm³ and iron meteorites roughly 7–8 g/cm³, so chondrites have roughly half the density of iron meteorites, not one-third.
- Some chondritic airbursts from bodies roughly 9–15 metres across can cause surface damage.
- Ten feet is about 3 metres. A typical 3-metre chondrite carries only a few kilotons on impact, whereas a body around 10 metres can exceed the Hiroshima yield; airburst altitude varies with size, composition and entry speed.
- Objects below about 40–50 metres generally break up in the atmosphere rather than forming impact craters.
Sources
Stony Meteoritesmeteorites.asu.edu
Stony meteorites, the most common type of meteorite, are generally composed of approximately 75 – 90% silicon-based minerals, 10 – 25% nickel-iron alloy, ...
What are Meteorites?ares.jsc.nasa.gov
Stony meteorites are by far the most common. More than 95% of meteorites observed to fall to Earth are stony. They can be divided into chondrites and ...
Meteorites and Their Properties - Frequency of Fallslpi.usra.edu
Most meteorites that have fallen to the Earth (~93%) are chondrites or achondrites (stony meteorites). A smaller fraction of them are iron meteorites (~6 ...
Types of meteorites | Natural History Museumnhm.ac.uk
There are two main types of stony meteorite – chondrites, which are some of the oldest materials in the solar system, and achondrites, which include meteorites ...
Space sciences/Astronomy/Celestial bodies/Meteorites/Stony ...aaas.org
... Most common meteorites found here on Earth, known as ordinary chondrites, are born from these stony, or S-type, asteroids. Site Footer. Support Us. Give to ...
Identifying meteorite source regions through near-Earth ...sciencedirect.com
by CA Thomas · 2010 · Cited by 42 — H chondrites through the 3:1 mean motion resonance. H chondrite source region is consistent with the short cosmic ray exposure ages known for H chondrites. H ...
Impact cratering on the H chondrite parent asteroidagupubs.onlinelibrary.wiley.com
by A Wittmann · 2010 · Cited by 37 — H chondrites provide one of the most complete pictures of an asteroid in the Solar System. These chondrites are often used to study nebular ...
Chondriteen.wikipedia.org
H chondrite have high total iron and high metallic Fe (15 ... Earth comes from the impact of comets and carbonaceous chondrites with the Earth's surface.
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