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Key Information

UY Scuti

Type Red hypergiant or supergiant star
Diameter 1,476,695,808 miles
Distance About 9,500 light years
Mass 7 to 10 solar masses
Temperature 5,600 °F
Star Type M2-M4Ia-Iab
Date of Discovery 1860
Other Names BD-12°5055

Learning Point

  • UY Scuti is one of the largest stars in our galaxy. It’s immense size makes it a very bright star, and it may yet become brighter as it may become a more powerful form of star as it uses up more of its hydrogen supplies.

Project

  • Draw a picture of UY Scuti from a planet in orbit around it.
  • Overview
  • Comparison
UY Scuti from a nearby planet.
A comparison of UY Scuti and our sun.
Philip Park, CC BY-SA 3.0, via Wikimedia Commons

Location

Located in Scutum, Milky Way

Fun Facts

  • UY Scuti might have a diameter 1,708 times bigger than our Sun, meaning it would swallow up Jupiter if it was positioned where our Sun is.
  • It is a variable star, which means it is constantly changing its brightness over about 740 days.
  • If we could travel around UY Scuti at the speed of light, it would take about seven hours to do so.
  • Its size is difficult to be sure of because of the challenges of trying to calculate how far it is from us.

Past Lessons

136 August 29, 2023 (North America)
No Past Lessons

Upcoming Lessons

No Upcoming Lessons