The military is actively monitoring the satellite using its space tracking network, which has indicated that it will impact the Pacific Ocean on Sunday, Colonel Alexei Zolotukhin said Friday.
“As of February 7, 2014 the fragments are expected to fall on February 16. The exact impact time and location of the fragments from the Kosmos-1220 satellite may change due to external factors,” Zolotukhin said.
Uncertainty over the reentry time means that the satellite, orbiting in a high-inclination orbit, could impact nearly any point on Earth's surface, including populated areas.
The size and weight of the Kosmos-1220, a naval electronic surveillance satellite, remain unknown, although the Tsiklon-2 rocket it was launched on in 1980 has a maximum payload capacity of around three metric tons.