NDLI: The extra-atmospheric mass of small meteoroids of the Prairie and Canada bolide camera networks

Content Provider	Springer Nature Link
Author	Stulov, V. P. Popelenskaya, N. V.
Copyright Year	2008
Abstract	The existing methods for determining the extra-atmospheric mass of meteor bodies from observations of their movement in the atmosphere allow a certain arbitrariness. Active attempts to overcome the discrepancy between the results of calculations based on different approaches often lead to physically incorrect conclusions. A way out is to laboriously accumulate the estimates and computation results and to consistently remove ambiguities. To correctly interpret the observed brightness of a meteor, one should use contemporary methods and the results of physical studies of the emitting gas. In the present work, the extra-atmospheric masses of small meteoroids of the Prairie and Canada bolide camera networks were calculated from the observed braking. It turned out that, in many cases, the conditions of movement of meteor bodies in the atmosphere corresponded to a free molecular airflow about a body. The so-called dynamic mass of the bodies was estimated from the real densities of the meteoroid material, which corresponded to monolithic water ice and stone, and for the proper values of the product of the drag coefficient and shape factor. When producing the trial function for the body trajectories in the “velocity-altitude” variables, we did not allow for fragmentation explicitly, since it is less probable for small meteoroids than for large ones. As before, our estimates differ substantially from the photometric masses published in the corresponding tables.
Ending Page	117
Page Count	7
Starting Page	111
File Format	PDF
ISSN	00380946
e-ISSN	16083423
Journal	Solar System Research
Issue Number	2
Volume Number	42
Language	English
Publisher	SP MAIK Nauka/Interperiodica
Publisher Date	2011-01-19
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Astrophysics and Astroparticles Planetology Astronomy, Observations and Techniques Astronomy, Astrophysics and Cosmology
Content Type	Text
Resource Type	Article
Subject	Astronomy and Astrophysics Space and Planetary Science

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