Details

Autor(en) / Beteiligte

• Muinonen, Karri
• Virtanen, Jenni
• Bowell, Edward

Titel

Collision Probability for Earth-Crossing Asteroids Using Orbital Ranging

Ist Teil von

• Celestial mechanics and dynamical astronomy, 2001-09, Vol.81 (1-2), p.93-101

Ort / Verlag

Dordrecht: Springer Nature B.V

Erscheinungsjahr

2001

Quelle

SpringerLINK Contemporary (Konsortium Baden-Württemberg)

Beschreibungen/Notizen

• We introduce new techniques for the computation of the collision probability for Earth-crossing asteroids in the case of short observational arcs and/or small numbers of observations. The techniques rely on the orbital element probability density computed using statistical orbital ranging. We apply the techniques to the Earth-crossing asteroid 1998 OX sub(4)with non-vanishing collision probability in numerous close approaches after the year 2012 (inclusive). We study the invariance of the collision probability in transformations between different orbital element sets, and develop a Spearman rank correlation measure for the validity of the linear approximation. We introduce an optimized, fast version of the statistical ranging method.