Meteorites provide vast amounts of information on the makeup and history of the solar system. The physical properties help to understand meteor behavior in the atmosphere, model characteristics of parent bodies, and determine methods to deflect potentially hazardous objects. Density and porosity are two of the most important physical properties. All the examined ordinary chondrite falls have bulk densities and porosities near their respected class averages. Most of the studied Antarctic ordinary chondrites have porosities around 12% or higher caused by weathering, placing them near the top of the range of values for chondritic falls. A trend is observed in acoustic velocity, where any meteorite with porosity over 10% has a longitudinal velocity near half the value of the class average. Low porosity meteorites such as Tenham, Chelyabinsk impact melt, and MIL07036 have velocities well above their class averages. Emissivities across all meteorites follow the trend of decreasing emissivity with increasing temperature.

中文翻译：

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普通球粒陨石的物理性质的实验室检查

陨石提供了大量有关太阳系组成和历史的信息。物理特性有助于了解大气中的流星行为，模拟母体的特征，并确定偏转潜在危险物体的方法。密度和孔隙率是两个最重要的物理性质。所有检查过的普通球粒陨石瀑布的堆积密度和孔隙率均接近其应得的平均水平。大多数研究的南极普通球粒陨石的孔隙度约为12％或更高，这是由风化引起的，它们将其置于球粒陨石落值范围的顶部附近。在声速中观察到一种趋势，其中任何孔隙度超过10％的陨石的纵向速度都接近分类平均值的一半。低孔隙度的陨石，例如Tenham，车里雅宾斯克冲击熔体和MIL07036的速度远高于同级平均速度。所有陨石的发射率遵循随温度升高发射率下降的趋势。