We present a study of the photometric results for the following 12 Trans-Neptunian Objects (TNOs):1998 SN165, 2001 UR163, 2002 WC19, 2005 RO43, 2005 RR43, 2010 RF64, 2011 KT19, 2014 JJ80, 2014 NW65, 2014 UM33, 2015 FG345, and 2017 OG69.
We analyzed images taken by the Liverpool Telescope at the Roque de los Muchachos Observatory (La Palma, Canary Islands, Spain). These observations were carried out as part of a project aimed at characterizing the rotational variability, phase curves, and absolute magnitudes of a set of faint objects. To achieve this, we performed photometric analysis on TNOs images using the e-photom and Tycho-Tracker programs, focusing on our primary project goal: determining the phase curves and absolute magnitudes of a subset of the initial sample. Additionally, we supplemented our photometric measurements with data from the Canadian Astronomy Data Centre.
After obtaining various photometric parameters for each TNO, we derived the corresponding magnitudes and subsequently determined physical parameters such as phase coefficients, absolute magnitude, and size. This analysis was conducted using the R-band of the Johnson-Cousins photometric system with the e-photom and Tycho-Tracker programs. We were able to determine the geometric albedos of our targets, enabling us to estimate their size based on the calculated absolute magnitudes. As a result of this study, we found a trend for the phase coefficients of all objects in our sample.