Аннотация:https://gcn.nasa.gov/circulars/42067The MASTER-Kislovodsk robotic telescope of the MASTER Global Robotic Net [1], [2]started Fermi GRB 251002A (trigger 781128896, Ttrigger=2025-10-02 20:14:51UT)at 2025-10-02 20:19:42 (Lipunov et al. GCN 42059, cover map and OThttps://master.sai.msu.ru/site/master2/event.php?id=3005541&action=12&SAT=SVOM&DAYS=2++ ) in two mutually perpendicular polarization filters.There is MASTER OT J005537.81-053401.0 since the first image withunfiltered m_OT~17.2 at 2025-10-02 20:22:09.308(not first time)with preliminary detected polarization.This OT was first publishied (discovered) by SVOM (GCN 42061), and also by LCO (Turpin et al. GCN 42062), FREM-ORM (Jelinek et al. GCN 42063), SAO RAS (Moskvitin et al. GCN 42065) and BOOTES (Perez-Garcia et al. GCN 42066)