We provide arguments in favour of impact origin of a 200 km suspected impact crater Kotuykanskaya near Popigai, Siberia, Russia. We use the gravity aspects (gravity disturbances, the Marussi tensor of the second derivatives of the disturbing geopotential, the gravity invariants and their specific ratio, the strike angles and the virtual deformations), all derived from the combined static gravity field model EIGEN 6C4, with the ground resolution of about 10 km and a precision of about 10 milliGals. We also use the magnetic anomalies from the model EMAG2 and emphasize the evidence of much deeper sources in the suspected area, constraining the impact origin of this structure.

Astronomical Institute Czech Academy of Sciences CZ 251 65 Ondřejov Fričova 298 Czech Republic

Faculty of Civil Engineering Czech Technical University Prague CZ 166 29 Praha 6 Prague Czech Republic

Faculty of Mining and Geology VSB TU Ostrava CZ 708 33 Ostrava Czech Republic

Faculty of Science Charles University Prague Czech Republic

Geophysical Institute University of Alaska Fairbanks 903 N Koyukuk Drive Fairbanks AK 39 USA

Research Institute of Geodesy Topography and Cartography CZ 250 66 Zdiby 98 Prague Czech Republic

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