Rotation of cometary meteoroids

  title={Rotation of cometary meteoroids},
  author={David Čapek},
  journal={Astronomy and Astrophysics},
  • D. Čapek
  • Published 3 April 2014
  • Physics, Geology
  • Astronomy and Astrophysics
The aim of this study is to estimate the rotational characteristics of meteoroids after their release from a comet during normal activity. The results can serve as initial conditions for further analyses of subsequent evolution of rotation in the interplanetary space. A sophisticated numerical model was applied to meteoroids ejected from 2P/Encke comet. The meteoroid shapes were approximated by polyhedrons with several thousands of surface elements, which have been determined by 3D laser… 

Figures and Tables from this paper

Three dimensional atmospheric entry simulation of a high altitude cometary dustball meteoroid

Aims. The break-up of a dustball meteoroid is investigated numerically based on fluid dynamics simulations of the meteoroid’s atmospheric entry flow. Both thermal and mechanical break-up mechanisms

September epsilon Perseid cluster as a result of orbital fragmentation

Context. A bright fireball was observed above the Czech Republic on September 9, 2016, at 23:06:59 UT. Moreover, the video cameras at two different stations recorded eight fainter meteors flying on

Curveballs in protoplanetary discs – the effect of the Magnus force on planet formation

Spinning planetesimals in a gaseous protoplanetary disk may experience a hydrodynamical force perpendicular to their relative velocities. We examine the effect this force has on the dynamics of these

Radar observability of near-Earth objects using EISCAT 3D

Abstract. Radar observations can be used to obtain accurate orbital elements for near-Earth objects (NEOs) as a result of the very accurate range and range rate measureables. These observations allow



The strength of cometary meteoroids: clues to the structure and evolution of comets

Meteoroid behaviour during atmospheric interaction provides clues about the strength and density of cometary disintegration products, establishing a bridge between different research fields. We have

Modeling of meteoroid streams: The velocity of ejection of meteoroids from comets (a review)

An analytical review of the models of ejection of meteoroids from cometary nuclei is presented. Different formulas for the ejection velocity of meteoroids and the corresponding parameters are

Densities and porosities of meteoroids

Using a physical theory of meteors and on the basis of the results of double-station photographic observations of meteors in Dushanbe (Tajikistan), Kiev, and Odessa (Ukraine), the mean mineralogical

From the Cradle to the Grave: The Rise and Demise of the Comets

In this chapter, we discuss the processes that drive the physical transformation and decay of cometary nuclei as they move from the frigid outer regions into the hot environment of the inner solar

Fragmentation model of meteoroid motion, mass loss, and radiation in the atmosphere

Abstract— We present the basic differential equations of meteor physics (the single body equations). We solve them numerically including two possible types of fragmentation: into large pieces and

Large Dust Grains Around Cometary Nuclei

Large amounts of particles ejected from the nucleus surface are present in the vicinity of the cometary nuclei when comets are near the Sun (at heliocentric distances ≤2 AU). The largest dust grains

Some features of Geminid meteoroid disintegration in the Earth's atmosphere

Among 11 bright Geminid meteors photographed at the Institute of Astrophysics, Tajik Academy of Sciences (Dushanbe, Tajikistan), 3 displayed distinct high-frequency (more than 100 Hz) pulsations of

The Dependence of the Circumnuclear Coma Structure on the Properties of the Nucleus

Abstract A new step of development of the 3-D circumnuclear coma (“CNC”) model described in Crifoet al.(1995) is presented: now the gas and dust production are computed from an explicit dusty-ice

Rotational bursting of interplanetary dust particles

Solar radiation pressure can cause rotational bursting and eventual elimination from the solar system of small asymmetric interplanetary particles by a windmill effect. The life span determined by