# An automatic approach to exclude interlopers from asteroid families

## TL;DR

This paper introduces an improved automated method based on Hierarchical Clustering to more accurately identify asteroid family members by reducing interloper inclusion, supported by an online portal for researchers.

## Contribution

It proposes a novel step to mitigate chaining effects in hierarchical clustering, enhancing the reliability of asteroid family member identification.

## Key findings

- Significantly reduces potential interlopers in asteroid family lists
- Develops an online portal for automated asteroid family analysis
- Improves robustness of asteroid family classification

## Abstract

Asteroid families are valuable source of information to many asteroid-related re- searches, assuming a reliable list of their members could be obtained. However, as the number of known asteroids increases fast it becomes more and more difficult to obtain robust list of members of an asteroid family. Here we are proposing a new approach to deal with the problem, based on the well known Hierarchical Clustering Method (HCM). An additional step in the whole procedure is introduced in order to reduce a so-called chaining effect. The main idea is to prevent chaining through an al- ready identified interloper. We show that in this way a number of potential interlopers among family members is significantly reduced. Moreover, we developed an automatic on-line based portal to apply this procedure, i.e to generate a list of family members as well as a list of potential interlopers. The Asteroid Families Portal (AFP) is freely available to all interested researchers.