Felipe graduated with a PhD in Aerospace Engineering in December 2025, his dissertation is titled: “Factorized, Adaptive, and Nonlinear Estimation for Space Applications”. Felipe joined the group in Fall 2021. He graduated in 2021 with a Bachelor of Science in Physics and Mechanical Engineering from Universidad de Los Andes, Colombia, and in 2023 with a Master of Science in Aerospace Engineering from UT Austin. Through his undergraduate studies, he worked with the Computational Mechanics and Quantum Materials research groups at Uniandes, concentrating primarily on machine learning. His PhD research focused on Bayesian estimation with machine learning techniques and on terrain relative navigation with nonlinear filters. Upon graduation, Felipe joined Amentum space in the Autonomous Space Systems branch of the NASA Johnson Space Center, in Houston, TX.

Rachel graduated with a PhD in Aerospace Engineering in December 2025, her dissertation is titled: “Adventures in Kalman Filtering: Exploring Methods of Expanding the Uses of the Kalman Filter”. Rachel joined the research group in Spring 2021. She graduated from the University of Colorado at Boulder in 2020 with a Master of Science in Aerospace Engineering. She has worked on the Emirates Mars Mission at the Laboratory for Atmospheric and Space Physics for almost her entire career at CU Boulder. Her research focuses primarily on spacecraft navigation, statistical orbit determination, and spacecraft rendezvous. After graduation, Rachel joined Lockheed Martin Space in Littleton, Colorado.

Kristen graduated with a Ph.D. in aerospace engineering in May 2025. Her dissertation is titled: “A Multiplicative Multi-State Constraint Kalman Filter”. Kristen joined the group in Fall 2018. She graduated in 2016 with a Bachelor of Science in Mechanical Engineering from Brown University and in 2020 with a Master of Science in Aerospace Engineering from UT Austin. Prior to joining the group, Kristen worked as an R&D Engineer at Saint-Gobain Performance Plastics for two years. Her research interests include nonlinear estimation, terrain-relative navigation, and particle filters. Kristen is affiliated with the Robotics Portfolio. After graduation, Kristen continued as a PostDoc followed by a position at Xona Space Systems.

Corey graduated with a Ph.D. in Aerospace engineering in Summer 2024. He graduated in 2018 with a Bachelor of Science in Mechanical Engineering from Ohio State University and in 2020 with a Master of Science in Aerospace Engineering from UT Austin. His research focus centers on guidance, navigation, and control of spacecraft with an emphasis on machine vision, descent and landing, and hardware in the loop testing. Corey is the recipient of a NASA Space Technology Graduate Research Opportunity fellowship. Upon graduation, Corey joined Blue Origin in Kent, Washington.

Arjun graduated with a Ph.D. in aerospace engineering in May 2023. He graduated in 2016 from BITS Pilani, India, with a Bachelor of Engineering in Electronics and in 2019 from UT Austin with a Masters in Aerospace Engineering. His research focuses on heterogeneous robot coordination and planning, with interests in control and navigation of quadrotors. Arjun completed the Graduate Portfolio Program in Robotics Portfolio. His Ph.D. dissertation is titled: “Onboard Control, Tracking, and Navigation for Autonomous Systems”. After leaving the group, Arjun joined Apple Maps in Cupertino, California.

Rahul graduated with a Ph.D. in aerospace engineering in May 2021. His dissertation is titled: “Adaptive Algorithms for Identification of Symmetric and Positive Definite Matrices“. He joined the research group in Summer 2017, prior to that he graduated from the Indian Institute of Technology Bombay, India, with a Bachelor in Mechanical Engineering in 2015 and from The University of Texas at Austin in 2017 with a Master of Science in Mechanical Engineering. His field of interest lies in using control theory and blending different fields in robotics with real world applications. Together with his Ph.D., Rahul completed the Graduate Portfolio Program in Robotics Portfolio. Upon graduation, Rahul joined Amazon‘s Scout robot team in Seattle, WA.

Sehyun graduated with a Ph.D. in aerospace engineering in May 2021. From June 2021 until April 2022 he continued his work in the group as a PostDoc. He graduated from Handong Global University, South Korea, with a Bachelor of Science in Mechanical and Control Engineering in 2012 and from Seoul National University with a Master of Science in Aerospace Engineering in 2014. His Ph.D. dissertation is titled: “Sequential Monte Carlo Filtering with Gaussian Mixture Models for Highly Nonlinear Systems“. For his paper titled: “Kernel-Based Ensemble Gaussian Mixture Filtering for Orbit Determination with Sparse Data” Sehyun received the John V. Breakwell Student Travel Award at the 2021 AAS/AIAA Astrodynamics Specialist Conference. His research focuses on integrated navigation systems with particular interest in image processing and Bayesian filtering. After leaving the group, Sehyun joined Hyundai autonomous driving group in Seul, South Korea.

Simone graduated with a Ph.D. in aerospace engineering in May 2021. His dissertation is titled: “New Developments In Nonlinear Filtering Using Differential Algebra“. He joined the research group in Summer 2018. He graduated from Politecnico di Milano, Italy, with a Bachelor degree in Aerospace Engineering in 2015 and with a Master degree in Space Engineering in 2017. His research focuses on nonlinear filtering for GN&C applications, with particular focus on relative pose estimation between satellites. At UT, Simone worked on the development of nonlinear filters using polynomial approximations. For his paper titled: “Estimation of the Conditional State and Covariance with Taylor Polynomials”, Simone received the John V. Breakwell Student Travel Award at the 2021 AAS/AIAA Space-Flight Mechanics Meeting. Upon graduation, Simone joined MIT’s ARCLab as a Post-Doc followed by a tenure-track faculty position at Iowa State University.

Kirsten graduated with a Ph.D. in aerospace engineering in August 2020, her dissertation is titled: Model Selection for Gaussian Mixture Model Filtering and Sensor Scheduling. She graduated from Auburn University in 2014 with undergraduate degrees in Aerospace Engineering and in Applied Mathematics and from The University of Texas at Austin in 2016 with a Master of Science in Aerospace Engineering. Together with her Ph.D., Kirsten completed the Graduate Portfolio Program in Applied Statistical Modeling. Her research focuses on spacecraft navigation with interests in estimation theory, Bayesian statistical inference, information theory, and prediction. Upon graduation, Kirsten joined Draper in Cambridge, MA.