Find all my papers on Google Scholar and NASA ADS.
Nath, A. (2026).
Shape and Spin of Potentially Hazardous Asteroid 2025 FA22
Minor Planet Bulletin, 53(2).
Six nights of photometry of the newly discovered potentially hazardous asteroid 2025 FA22 yield a synodic rotation period of 13.075 hours. The lightcurve amplitude indicates an elongated shape, characterizing the object's spin and figure during its close approach to Earth. This was the first published rotation period for 2025 FA22 and has since been cited by other studies of the object.
Nath, A. (2026).
Photometric Characterization of Newly Discovered Potentially Hazardous Asteroid 2025 FA22
Journal of the Royal Astronomical Society of Canada, 120(2), 50.
Multi-band CCD photometry of potentially hazardous asteroid 2025 FA22 during its September 2025 close approach gives a synodic rotation period near 13.1 hours and BVRI colour indices consistent with an S-type (stony) composition, characterizing a hazardous near-Earth object within days of its discovery.
Nath, A. (2026).
Lightcurve and rotation period of asteroid (2977) Chivilikhin
Minor Planet Bulletin, 53(1), 14.
Dense time-series photometry of main-belt asteroid (2977) Chivilikhin from remote robotic telescopes resolves a synodic rotation period of 6.257 ± 0.001 hours. The double-peaked phased lightcurve constrains the asteroid's spin state and shape.
Nath, A. (2024).
Developing algorithms to determine an asteroid's physical properties and the success of deflection missions
Acta Astronautica, 220, 109–118.
Open-source Python algorithms derive asteroid rotation periods, diameters, and binary mutual-orbit periods from a combination of sparse and dense photometry. Applied to the Didymos system, the method recovers the DART-induced shortening of Dimorphos's mutual orbital period from 11.91 to 11.35 hours, independently confirming the spacecraft's deflection of the asteroid.
Nath, A. (2023).
Finding unknown asteroids to strengthen planetary defence
Journal of the Royal Astronomical Society of Canada, 117(1), 28–30.
A reproducible Python pipeline detects previously uncatalogued moving objects in open survey images by aligning image sequences and isolating sources that shift against the fixed background stars. A masking step suppresses contaminating light to reveal faint asteroid candidates, yielding position-versus-time astrometry suitable for follow-up and reporting.
Kokori, A., et al. (2026).
ExoClock Project IV: A homogeneous catalogue of 620 updated exoplanet ephemerides
The Astrophysical Journal Supplement Series.
Data contributor to a 600+ exoplanet community catalogue: submitted updated transit ephemerides for multiple targets through the ExoClock/Ariel collaboration.
Moskovitz, N., et al. (2024).
Photometry of the Didymos System across the DART Impact Apparition
The Planetary Science Journal, 5(2), Article 35.
Data contributor: 55+ hours of calibrated photometry using robotic telescopes across Australia, Canada, Chile, and Spain, as part of an international team of nearly 80 co-authors.
Peer-Reviewed Conference Proceedings
SciPy Conference, 2024. Algorithms to Determine Asteroid Physical Properties Using Sparse and Dense Photometry, Robotic Telescopes, and Open Data
8th IAA Planetary Defense Conference, Vienna, 2023. Developing Algorithms to Determine the Physical Properties of Asteroids and Applying Them to Measure the DART Impact on Didymos
AAVSO Annual Meeting, 2022. Detecting Unknown Asteroids Using Robotic Telescopes, Open Data, and Python
7th IAA Planetary Defense Conference, 2021. Aiming for Apophis: Asteroid Astrometry and Public Education During COVID-19 Lockdowns
Conference talks, posters, and abstracts (NESF, LPSC, AGU, ExoClock and others) are listed on the Talks and Posters page.
Science Communication & Outreach
SkyNews Magazine (2020)
Around the universe in six years
Nov-Dec 2020.