# Vera Rubin Observatory spots the largest ultra-fast spinning asteroid yet

> **Open Intelligence Dossier** · First detected: 2026-10-13 18:00 UTC · Category: Science

## Executive Summary
The Vera Rubin Observatory has detected the largest ultra-fast spinning asteroid known to science, challenging existing physical models.

## Intelligence Brief
Recent scientific reporting indicates that the Vera Rubin Observatory has spotted the largest ultra-fast spinning asteroid yet discovered. According to coverage from outlets including Phys.org, New Scientist, HotHardware, The Daily Galaxy, Inshorts, Starlust.org, and srpske.rs, this newly found celestial body measures 1.6 miles or 1.5 miles wide, depending on the specific source, and is identified by the designation Asteroid 491384. The object is reported to be spinning under five minutes, or as fast as a fairground ride, rotating at a velocity that has caught scientists completely off guard. Coverage does not yet specify the full orbital path of the asteroid or its exact distance from Earth, but it establishes that the discovery stems from research posted on the arXiv preprint server. The technical specifics of the find are heavily emphasized across the participating outlets, with particular attention paid to the unusual physics of the discovery.


The Daily Galaxy notes that the asteroid is spinning so fast it should theoretically tear itself apart under centrifugal forces, creating a puzzle for researchers who study planetary defense and asteroid composition. HotHardware and Starlust.org both highlight the scale of the object, measuring roughly 1.5 to 1.6 miles across, which differentiates it from smaller ultrafast rotators previously cataloged by astronomers. Inshorts and srpske.rs corroborate these details, confirming that Asteroid 491384 now holds the record as the largest known ultrafast rotator in our solar system. This finding arrives against the backdrop of ongoing sky surveys and astronomical monitoring designed to map near-Earth objects and understand their physical limits. Most fast-spinning asteroids previously discovered by astronomers have been much smaller fragments, typically boulders or small rocks whose internal material strength can withstand rapid rotation without disintegrating.


Finding an object of this massive scale spinning at such high speeds challenges current scientific understanding of asteroid structural integrity and the cohesive forces holding large space rocks together. The inclusion of the study on the arXiv preprint server indicates that the findings are currently undergoing broader peer review and scrutiny within the global astrophysical community. As the scientific community digests the data provided by the Vera Rubin Observatory, future coverage is expected to track the formal peer-review process of the arXiv study and any subsequent observations by other telescopes. The available reports do not yet detail whether additional monitoring campaigns have been scheduled to study Asteroid 491384 further, nor do they specify if other similar bodies might be lurking undetected in survey data. Observers and space enthusiasts will need to monitor updates from the academic institutions involved and the preprint server for final publication details regarding this record-breaking object.

## Multi-Source Evidence Table
| Source Outlet | Headline | Verification URL |
|---|---|---|
| HotHardware | A 1.6-Mile Asteroid Is Spotted Spinning So Fast It Challenges What We Know | [Source Link](https://news.google.com/rss/articles/CBMiogFBVV95cUxQNXRVYlhIS2NYSl9QX0xuSG1SeXdlWWluSE5Vdmhsc1JIc2p0bVpDdXA1MGQyZXN2ZlR0ZGg3M1pMWHBON0x0NlBFNEQ4Yk9wMWpvRG9kZ1Q5Skg5TFdBUWQwZnE4b0V5aTZfTzZrMUc2MGRubGNMZzFvdlp1ZXdqR09EVkUzellpUXhxYkVnYVczVDRZTUVBakgxZUFQTkRoOHc?oc=5) |
| The Daily Galaxy | Astronomers Have Spotted a Record-Breaking Asteroid Spinning So Fast It Should Tear Itself Apart | [Source Link](https://news.google.com/rss/articles/CBMidEFVX3lxTFBNNFhqN3FOSXVBMXlmeTctbWhnek0yMjZzZUtfQVd0RU1sM3dqYURWZThORmg3MTdVNF9rM2JrR3RuWExVa0dENDEyRUxRT1JyVExxVzRVNXBoNGFtZXpRMTBJWlFLTmtyWlZnd3M0d0tTRTEx?oc=5) |
| Inshorts | Largest known ultra-fast spinning asteroid found - The study was posted on arXiv preprint server - Inshorts | [Source Link](https://news.google.com/rss/articles/CBMilgFBVV95cUxNS21XclNYR3V2X0tHbHpTS2x1aXQ3aVhqYlV0Q3E0VWQ2azNQcGgtSlZJWVFUVW5XM2NYREd3US13VmU5TVRyY0dmM1BsWksxODhCeC1Nck5ia1M4aEpSRzdHdGhNVnpUNGJLZHZoaXBTeDBOZUpsQ0o5M1lGVVU3TzI2bHdvVUgzWnQxLU51SFU4YTE1UnfSAZsBQVVfeXFMTkk0Vnd1M0RrZUJ6eHhiZnhWWVlEcnZJR1RHLUlYTXNmR2YySTY5Ql9oWlhHSFl0RzNlMWs2NzFRSmpYRnNfTUtweUlWSnhDQUxPWWRybXh6UTMzdnplOXZpODlNUVdJU3dlcHlxWi1vUm5ERTdYZE5TY3JVTTVEbENrRXhKWk0zSEpPaVUwNHZWZkRtZXdYRVV0dW8?oc=5) |
| Starlust.org | 1.5-mile-wide asteroid spinning under 5 minutes catches scientists off guard—here’s why it’s unusual | [Source Link](https://news.google.com/rss/articles/CBMixgFBVV95cUxOcGF1VlRDVnU3cGRpSGJ3M0UxMzRlbURFS1lLNlRDZlNqOHNERXhvUE5pZFJWc1h2clc2OWcyS1ZfeEpKUUNtUnNuYXp2WWRFUmNFLVVhVU4xMVhlVzZ1TkhpUnZRd2xVbGttaERUeGxvejI5VV9LRzUxcFl0TFV5RHFObVBObzRYWFp5UTdrQTQxVjBST21mRVcxeGhRTk81NGF6OWJDNldQbHFvYTZQc291amxycnR4Rmd1cTg4MFlaa0ZRQWc?oc=5) |
| srpske.rs | Asteroid 491384: largest known ultrafast rotator | [Source Link](https://news.google.com/rss/articles/CBMimgFBVV95cUxOT3hqeExORUEwUWpWeEdwUWlVdmRRY09zalk2cXFNSmhKZHpXWEtPNFoxaFZJYk94MVNqZGx2X21Tbmk0dXRJV0E0NjdaR1VYUHNCcnlqeEtSSUI0Ym1oNnFnZzFsU01ZY0VwZjdMald2QmNSQ0VTeTkzY2MyV3dqbWNNR2ZjMGxIbEUwdXJpcEVoNDBRbVhiUGRn?oc=5) |
| New Scientist | Two large asteroids found spinning as fast as a fairground ride | [Source Link](https://news.google.com/rss/articles/CBMiqwFBVV95cUxNTVlJSnFGY0ZYSHBDc3ZqWjRsMEZ0UHV1SU90WjZjMW50QUlnVnF4a0dIeUhhSFBNS0V3WEFOWTNtaXN0LU9VVXhRbEUxY3Zic2kzdjRnZ3YxSFlGYURvSGlvZzN4c0k1LW5uWHhqSG1LMTJvSzlqaGdqNDl1cE9ZakNQLVUzaW5pcWFoVzBEWTJrWUdxUVUwejQ3d0ZZaTdlbURta1R4TzN0WHc?oc=5) |
| Phys.org | Vera Rubin Observatory spots the largest ultra-fast spinning asteroid yet | [Source Link](https://news.google.com/rss/articles/CBMie0FVX3lxTFB0T0hpUzJHNVExUXFiSk4wLWhjX0dIMkxlYzVFZ1lva2R3RnBVRzA4d0FfQ0JKNW1abEYtMXh0VW55VFBST1FZb3dHYklvbEN1MmlBZUxvT2F3UVQ1QlQ3dndZZXJRZnBZRlNrYXVZTC00QWxIY2pDOVpaNA?oc=5) |

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