Discovered by ATLAS, golden comet C/2025 K1 resists the Sun and approaches Earth
Comet C/2025 K1 ATLAS draws attention with its golden and brownish-red tones. The object, discovered in May by NASA’s ATLAS system, survived perihelion on October 8 at 0.33 AU from the Sun. It remains visible in the pre-dawn sky in the constellation Virgo.
Astronomers record images of the comet in places such as California and Arizona. The rare color results from a low concentration of carbon compounds.
- Current magnitude: 10.6
- Distance from Earth: greater than 121 million km
- Coma: 1.6 arc minutes
- Tail: 8.3 arc minutes
The comet approaches Earth again on November 26.
Chemical composition explains color
Low levels of CN, CO, CO2 and C2 reduce blue-green emissions common in comets. Higher proportion of OH and H2O dominates appearance.
David Schleicher of the Lowell Observatory identifies exceptionally low concentrations of carbon molecules. This characteristic differentiates the object from others in the Oort Cloud.
Perihelion Survival
The comet faced extreme temperatures during its closest passage to the Sun. Experts doubted its structural integrity.
Dan Bartlett captured an image on October 29, confirming the resistance. Richard Sears recordedThe object on November 1st in California.
Chris Schur photographed the kite in Payson, Arizona, on the same day. The observations show that the event is intact after the event.
ATLAS ( C/2025 K1 ) SURVIVED PERIHELIUM and now IT TURNED GOLDEN!
— EXOPLANETAS Science and Technology News (@ExoPlanetascom) November 1, 2025
Comet C/2025 K1 (ATLAS) was not expected to survive perihelion (its closest approach to the Sun) on October 8 due to its low intrinsic brightness. But he survived and now you can see him with everything… pic.twitter.com/DFC94fatcv
Origem na Nuvem de Oort
Distant frozen bodies comprise that spherical region around the Solar System. O C/2025 K1 ATLAS traces preserved primordial materials.
Spectral analyzes reveal low carbon composition. Studies are compared with other comets to understand chemical variations.
Atual observation requires equipment
Binoculars or telescopes allow viewing before the sun rises. Positioning low on the eastern horizon makes it difficult to see the sky.
TheSkyLive updates position data in the Leão constellation. Magnitude prevents detection without optical aid.
Next toEarth proximity
Previous passage occurred on August 13th. Rapprochement on November 26 offers new observation window.
Scientists monitor the evolution of the coma and tail. Data contributes to models of cometary behavior.
Recent photographic record
Images from November 1st highlight intense golden tones. Amateur photographers contribute detailed captures.
Ground-based observations complement data from professional telescopes. Visual records document post-perihelion changes in real time.
The comet follows a hyperbolic trajectory, leaving the Solar System after gravitational interactions. Continuous monitoring tracks brightness and structure until the end of visibility.
