WASHINGTON — A large Soviet spacecraft that appears to have defied U.S. identification efforts has begun moving erratically in orbit and should re-enter the Earth's atmosphere today, officials said Friday.
Re-entry of the spacecraft, designated Cosmos 1,767, is likely to produce a spectacular light show as its pieces burn up from the friction of re-entering the atmosphere, the officials said.
Officials expressed no concern that the debris will pose a threat to safety.
Del Kindschi, a spokesman for the U.S. Space Command at Colorado Springs, Colo., said: "I guess it is a large satellite, and there is the possibility that some pieces could reach Earth. That's the reason we're tracking it down."
Kindschi said the spacecraft was launched July 30 and that on Aug. 4 a rocket body associated with the spacecraft "decayed in orbit" and re-entered the atmosphere.