What Is The Oldest Heavenly Body That Has Been Observed And Has Preceded Great Events In History?

What is the oldest heavenly body that has been observed and has preceded great events in history?

 

The oldest heavenly body that has been observed and has preceded great events in history was Halleys Comet. It was recorded on 476 BC. It was a short-period comet visible from Earth every 75 to 76 years. It was only known short-period comet that was visible to the naked eye, and might appear twice in a human lifetime.