Asteroid (2018 GS1)
Closest pass on 2026-Oct-28 16:15 TDB (Julian Date: 2461342.17684608)
Key Facts
- On 2026-Oct-28 16:15, asteroid (2018 GS1) passed Earth at a nominal distance of 4,240,000 km (11 lunar distances).
- At closest approach, the object was traveling at 9.32 km/s relative to Earth.
- The object has an estimated size of 108 m, which is about the size of a football pitch.
- The miss distance was just over 11 times the distance to the Moon.
- Hazard classification: 50 to 140 meters. Reaches Earth surface to carve a crater over a kilometer wide (like Meteor Crater, Arizona), destroying infrastructure across an entire metropolitan region and generating damaging regional seismic waves.
Visual Scale Comparison
| Target | 108 m |
|---|---|
| Smaller | football pitch: 105 m |
| Larger | Great Pyramid: 138 m |
Object size compared to known reference benchmarks.
Miss Distance Orbital Dial
Concentric orbital rings showing Earth, Moon orbit, and asteroid trajectory.
Astrometric & Orbital Parameters
| Designation | 2018 GS1 |
|---|---|
| Full Object Name | (2018 GS1) |
| Nominal Miss Distance | 4,240,000 km (11 lunar distances / 0.0283485189189211 au) |
| 3-Sigma Minimum Distance | 3,847,943.751 km (10.010 LD) |
| Relative Velocity (v_rel) | 9.31939189106332 km/s (about 10 rifle bullets) |
| Velocity at Infinity (v_inf) | 9.3093009981924 km/s |
| Time Uncertainty (3-sigma) | 05:41 |
| Absolute Magnitude (H) | 22.59 mag |
| Orbit Solution ID | 15 (NASA JPL Small-Body Database) |
| Inside Moon Orbit | No |
| Inside Geostationary Ring | No |
Cite this page
Permanent URL: https://whatnearlyhitus.com/approaches/2026-Oct-28/2018-gs1/ | Machine-readable twin: index.json
APA:
What Nearly Hit Us Project. (2026). Asteroid (2018 GS1) Close Approach on 2026-Oct-28 16:15. What Nearly Hit Us. Retrieved from https://whatnearlyhitus.com/approaches/2026-Oct-28/2018-gs1/MLA:
"Asteroid (2018 GS1) Close Approach on 2026-Oct-28 16:15." What Nearly Hit Us, What Nearly Hit Us Project, 2026-09-24, https://whatnearlyhitus.com/approaches/2026-Oct-28/2018-gs1/.BibTeX:
@misc{approach_2018GS1_202628,
title = {Asteroid (2018 GS1) Close Approach on 2026-Oct-28 16:15},
author = {{What Nearly Hit Us Project}},
year = {2026},
url = {https://whatnearlyhitus.com/approaches/2026-Oct-28/2018-gs1/},
note = {Primary upstream source: NASA/JPL CNEOS CAD API}
}