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Asteroids

Fast-Moving Asteroid Found in Sun's Glare: 2025 SC79 Has the Second-Fastest Unique Orbit in Solar System

Strategic Insights

— 1 min read

A newly discovered asteroid, 2025 SC79, has been found in the Sun's glare, traveling around the Sun in just 128 days, making it the second-fastest unique asteroid orbit in the Solar System. This asteroid was first observed by Carnegie Science astronomer Scott S. Sheppard on September 27 and was discovered to be hiding in the Sun's glare, where observing objects is extremely challenging. The discovery of 2025 SC79 is significant, as it is only the second known object with an orbit inside of Venus and crosses Mercury's orbit in its 128-day trip around the Sun.

Key Takeaways:

  • 2025 SC79 is a fast-moving asteroid with the second-fastest unique orbit in the Solar System, traveling around the Sun in just 128 days.
  • The asteroid was discovered by Carnegie Science astronomer Scott S. Sheppard on September 27 and is only the second known object with an orbit inside of Venus.
  • 2025 SC79 crosses Mercury's orbit in its 128-day trip around the Sun and was found hiding in the Sun's glare, where observing objects is extremely difficult.
  • The discovery of 2025 SC79 is significant for understanding the forces that shaped the Solar System's architecture and identifying objects at risk of crashing to Earth.
  • The asteroid is 700 meters in diameter and will be invisible to telescopes for several months, with future research revealing details about its composition and possible origin.
  • The study of "twilight" asteroids, like 2025 SC79, helps identify objects that pose a danger to Earth and is partially funded by NASA.

Statistics:

  • 2025 SC79 orbits the Sun in 128 days, making it the second-fastest unique asteroid orbit in the Solar System.
  • Mercury's orbit takes approximately 88 days to complete around the Sun.
  • The fastest known asteroid orbits the Sun in a record-breaking 113 days, discovered by Scott S. Sheppard and his collaborators in 2021.
  • 2025 SC79 is 700 meters in diameter, making it a significant object in terms of size and potential impact hazard.
  • The study of "twilight" asteroids, like 2025 SC79, is partially funded by NASA, with a budget allocation of $X ( NOTE: the original text does not provide budget specifics, so this is left blank for authenticity )

Sources:

  • "Fast-moving asteroid found in Sun's glare." Carnegie Institution for Science, 16 Oct. 2025.

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