From the December 2010 issue

Do astronomers know of or suspect any stars that were original members of the same star cluster as our Sun?

Michael Amato, West Haven, Connecticut
By | Published: December 27, 2010 | Last updated on May 18, 2023
The Sun is a star with a diameter of approximately 864,000 miles (1,390,000 kilometers), about 109 times the diameter of Earth. The largest stars have a diameter about 1,000 times that of the Sun.

Only one star, HIP 21158 in Taurus, remains a candidate sibling; however, the evidence that this star was born in the same cluster as the Sun is weak.