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Vera C.Rubin Observatory

Jan. 9, 2026

Scientists analyzing the first images from the Vera C. Rubin Observatory recently discovered the fastest-spinning asteroid in its size class yet named 2025 MN45.

About Vera C.Rubin Observatory:

  • It is located atop the Cerro Pachón mountain in the Chilean Andes, where dry air and dark skies provide one of the world's best observing locations.
  • It is named after American astronomer Vera C. Rubin, who provided evidence about dark matter for the first time in the 1970s.
  • It is jointly funded by theS. National Science Foundation and the U.S. Department of Energy's Office of Science.
  • The observatory has four main scientific goals:
    • Understand the nature of dark matter and dark energy.
    • Create an inventory of the asteroids, comets, and other objects in the solar system.
    • Map the Milky Way and help reconstruct its history.
    • Explore objects — like exploding stars and black holes — that change position or brightness over time.
  • The centrepiece of the observatory is the Simonyi Survey Telescope.
    • It has the world’s largest digital camera.
    • It is the fastest-slewing telescope in the world and takes just five seconds to move and settle from one target to another.
    • This speed is due to the telescope’s compact structure (owing to the three-mirror design) and its mount, which floats on a film of oil.
  • This observatory will provide comprehensive images of the night sky unlike anything astronomers have seen before.
  • It will constantly scan the sky of the southern hemisphere, creating an ultra-wide, ultra-high-definition time-lapse record of the universe.
  • The amount of data gathered by Rubin Observatory in its first year alone will be greater than that collected by all other optical observatories combined.

Key Facts about 2025 MN45:

  • It is a newly discovered asteroid.
  • It resides in the main asteroid belt between Mars and Jupiter.
  • It completes one rotation every 1.88 minutes, making it "the fastest-spinning asteroid”.

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