Vishnu Reddy, University of Arizona, Juan A. Sanchez, Planetary Science Institute, Audrey Thirouin, Lowell Observatory, Edgard G. Rivera-Valentin, Arecibo Observatory, William Ryan, Magdalena Ridge Observatory, Eileen Ryan, Magdalena Ridge Observatory, Nick Mokovitz, Lowell Observatory, Stephen Tegler, Northern Arizona University
Keywords: dim objects, asteroids, spectroscopy, characterization, phase angle
Abstract:
Physical characterization of dim space objects in cis-lunar space can be a challenging task. Of particular interest to both natural and artificial space object behavior scientists are the properties beyond orbital parameters that can uniquely identify them. These properties include rotational state, size, shape, density and composition. A wide range of observational and non-observational factors affect our ability to characterize dim objects in cis-lunar space. For example, phase angle (angle between Sun-Target-Observer), temperature, rotational variations, temperature, and particle size (for natural dim objects). Over the last two decades, space object behavior scientists studying natural dim objects have attempted to quantify and correct for a majority of these factors to enhance our situational awareness. These efforts have been primarily focused on developing laboratory spectral calibrations in a space-like environment. Calibrations developed correcting spectral observations of natural dim objects could be applied to characterizing artificial objects, as the underlying physics is the same. The paper will summarize our current understanding of these observational and non-observational factors and present a case study showcasing the state of the art in characterization of natural dim objects.
Date of Conference: September 20-23, 2016
Track: Poster