However, writing on Twitter astronomer John McDowell said the risk was low.
He said:”To be clear, I do NOT regard this object as a significant risk.
“Reentries for a object with dry mass of about 4 tonnes may see some debris reach the ground, but not much.”
According to Russian media outlet Tass the purpose of the launch was to test a new upper stage rocket, called the Persei booster for the first time.
Initially the launch was declared a success according to officials
Later on however the booster appeared to suffer from engine failure.
This prevented the launcher from reaching a higher than low- Earth orbit.
On Wednesday evening the 18th Space Control Squadron confirmed the re-entry had occurred at 4.08pm Eastern Standard Time over the South Pacific.
In November the US said that debris from a Russian anti-satellite missile test had forced the crew on the International Space Station (ISS) to shelter as a precaution
Last May NASA slammed China after debris used to launch that country’s new space station landed in the Indian Ocean.