Asteroids at 474158 (1999 FA)
What the source measured
NEOWS reported: Asteroid 474158 (1999 FA) will pass within 0.1327 AU (19,854,159 km) of Earth on 2026-09-12. Estimated diameter: 0.192–0.429 km. Velocity: 6.5 km/s. Classified as Potentially Hazardous.
How we know
One source: NEOWS. Not yet confirmed by a second, independent source.
Our own score for this event is 14 out of 100, at 49 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Computed under scoring rules v4. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Asteroids |
| Severity | Low |
| Calamity Score (ours) | 14 / 100 |
| Our confidence | 49% |
| Coordinates | 0.0000, 0.0000 |
| Timestamp | 2026-09-12T17:35:00.000Z |
| Source | https://ssd.jpl.nasa.gov/tools/sbdb_lookup.html#/?sstr=2474158 |
Score Breakdown
Technical Details
| AbsoluteMagnitude | 20.71 |
| DiameterMinKm | 0.19 |
| DiameterMaxKm | 0.43 |
| IsPotentiallyHazardous | true |
| CloseApproachDate | 2026-09-12 |
| MinDistAu | 0.13 |
| MinDistKm | 19854159.49 |
| VelocityKms | 6.52 |
Safety Information
Always follow official guidance from your local emergency management agency. This platform provides scientific monitoring data and is not a substitute for official warnings. If you are in immediate danger, contact your local emergency number.
Series begins 8 March 2026. Comparisons refer to that period only. Collection gap: 14-26 August 2026.
This data is aggregated algorithmically from scientific sources. Not a replacement for official emergency warnings.
Want to know when something happens in this area?
Calamity.live data shows a asteroid event with CalamityScore 14/100, at 474158 (1999 FA), based on data from neows. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.