Preprint

Detection and identification of asteroids with the 4-m ILMT

Sara FilaliInstitute of Astrophysics and Geophysics , Liège University , Allée du 6 Août 19c , 4000 Liège , BelgiumBhavya AilawadhiAryabhatta Research Institute of Observational Sciences , Manora Peak , Nainital , 263001 Ut- tarakhand , IndiaTalat AkhunovNational University of Uzbekistan , Department of Astronomy and Astrophysics , 100174 Tashkent , UzbekistanMonalisa DubeyAryabhatta Research Institute of Observational Sciences , Manora Peak , Nainital , 263001 Ut- tarakhand , IndiaNaveen DukiyaAryabhatta Research Institute of Observational Sciences , Manora Peak , Nainital , 263001 Ut- tarakhand , IndiaPaul HicksonPriyanshi KumariAryabhatta Research Institute of Observational Sciences , Manora Peak , Nainital , 263001 Ut- tarakhand , IndiaGokul Singh MehraAryabhatta Research Institute of Observational Sciences , Manora Peak , Nainital , 263001 Ut- tarakhand , IndiaKuntal MisraAryabhatta Research Institute of Observational Sciences , Manora Peak , Nainital , 263001 Ut- tarakhand , IndiaVibhore NegiKavli Institute for Astronomy and Astrophysics , Peking University , Beijing 100871 , ChinaAnna Pospieszalska-SurdejInstitute of Astrophysics and Geophysics , Liège University , Allée du 6 Août 19c , 4000 Liège , BelgiumKumar PranshuUniversity of Calcutta , 87/1 College Street , Kolkata 700073 , IndiaJean SurdejAryabhatta Research Institute of Observational Sciences , Manora Peak , Nainital , 263001 Ut- tarakhand , IndiaSarvesh Kumar Yadav

2026

Ochiq kirishYashil

ABI

Annotatsiya

The International Liquid Mirror Telescope (ILMT) covers a 22.3' wide strip of sky in declination (δ), centred at δ = +29° 21' 41.4'' and right ascension (α) in the range 0 h <= α < 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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DOI: 10.48550/arxiv.2607.02675

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