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arXiv · 2607.02675

Detection and identification of asteroids with the 4-m ILMT

Sara Filali·Bhavya Ailawadhi·Talat Akhunov·Monalisa Dubey·Naveen Dukiya·Paul Hickson6·Priyanshi Kumari·Gokul Singh Mehra·Kuntal Misra·Vibhore Negi·Anna Pospieszalska-surdej·Kumar Pranshu·Jean Surdej·Sarvesh Kumar Yadav
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Abstract

The International Liquid Mirror Telescope (ILMT) covers a 22.3' wide strip of sky in declination ({\delta}), centred at {\delta} = +29{\deg} 21' 41.4'' and right ascension ({\alpha}) in the range 0 h <= {\alpha} < 24 h. Having a short focal length (f /D ~ 2.4) and a large diameter (4 m), makes the ILMT an excellent asteroid hunter. The ILMT began its 4th cycle in October 2024, running through May 2025. The astrometric accuracy has been improved to 0.1'' , and the PyLMT - a detection and classification pipeline -, has been fine-tuned using data from previous cycles. The current detection rate is tens of transients detected each night with high accuracy in classification and identification. We present statistical results for the asteroids detected during ILMT's Cycles 1-4. We first evaluate the astrometric performance of the detections across different ecliptic latitude ranges. We then describe the positions, apparent motions, and V magnitudes predicted by the Minor Planet Center (MPC) for the asteroids observed in the SDSS g', r', and i' bands. Finally, we assess the ILMT's potential for detecting near-Earth objects (NEOs), potentially hazardous asteroids (PHAs), and comets.

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Sara Filali, Bhavya Ailawadhi, Talat Akhunov, Monalisa Dubey, Naveen Dukiya, Paul Hickson6, Priyanshi Kumari, Gokul Singh Mehra, Kuntal Misra, Vibhore Negi, Anna Pospieszalska-surdej, Kumar Pranshu, Jean Surdej, Sarvesh Kumar Yadav. 2026-07-02. Detection and identification of asteroids with the 4-m ILMT. https://arxiv.org/abs/2607.02675

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