Updated analysis of the dynamical relation between asteroid 2003 EH1 and comets C/1490 Y1 and C/1385 U1

TL;DR

This study extends the observational data of asteroid 2003 EH1 to evaluate its potential link with historical comets C/1490 Y1 and C/1385 U1, ultimately excluding a direct relationship.

Contribution

It provides an updated analysis with extended astrometric data, clarifying the dynamical relationship between 2003 EH1 and the historical comets.

Findings

Extended the observed arc of 2003 EH1 from 10 months to 5 years.

Excluded the direct relationship between 2003 EH1 and the comets C/1490 Y1 and C/1385 U1.

Abstract

The asteroid 2003 EH1, proposed as the parent body of the Quadrantid meteor shower, is thought to be the remnant of a past cometary object, tentatively identified with the historical comets C/1490 Y1 and C/1385 U1. In the present work we use recovery astrometry to extend the observed arc of 2003 EH1 from 10 months to about 5 years, enough to exclude the proposed direct relationship of the asteroid with both of the comets.