121617 Apr 2026

: Observations revealed an asymmetric arc that is roughly 40% brighter than the rest of the ring, potentially trapped by gas pressure.

: A 2018 paper in the Journal of Biomedical Optics regarding "Transvaginal fast-scanning optical-resolution photoacoustic endoscopy" . 121617

: A foundational study titled "Morphology of the gas-rich debris disk around HD 121617 with SPHERE observations in polarized light" used VLT/SPHERE data to resolve the disk in scattered light. Scientific Profile of HD 121617 : Observations revealed an asymmetric arc that is

: This paper, available on ArXiv and Astronomy & Astrophysics , provides a detailed analysis of a newly discovered "arc" of enhanced dust density within the disk. Scientific Profile of HD 121617 : This paper,

HD 121617 is a young (approx. 16 million years old) A1V-type star located about 118 parsecs away.

If "121617" is a publication ID rather than a star name, it may refer to:

Recent research highlights the star as a "hybrid" system between a protoplanetary and a debris disk stage.