# First Results from the rapid-response spectrophotometric characterization of Near-Earth Objects

## TL;DR

This study reports rapid spectrophotometric observations of 82 Near-Earth Objects, providing insights into their composition and classification, particularly focusing on small NEOs and their taxonomic distribution.

## Contribution

It introduces a rapid-response spectrophotometric methodology for classifying small NEOs and provides new statistical data on their taxonomic ratios.

## Key findings

- The C-type to S-type ratio among small NEOs is approximately 1.1.
- About 10% of observed NEOs are neither C- nor S-type.
- The methodology enables efficient classification of small NEOs.

## Abstract

As part of our multi-observatory, multi-filter campaign, we present \rmi color observations of 82 Near-Earth Objects (NEOs) obtained with the RATIR instrument on the 1.5m robotic telescope at the San Pedro Martir's National Observatory in Mexico. Our project is particularly focused on rapid response observations of small ($\lesssim 850$ m) NEOs. The rapid response and the use of spectrophotometry allows us to constrain the taxonomic classification of NEOs with high efficiency. Here we present the methodology of our observations and our result, suggesting that the ratio of C-type to S-type asteroids in a size range of $\sim$30-850m is 1.1, which is in accordance with our previous results. We also find that 10$\%$ of all NEOs in our sample are neither C- nor S-type asteroids