| Observer | |
|---|---|
| Name | Mason S |
| Experience Level | 4/5 |
| Remarks | Suspected impact occurred, object punched through low stratus clouds, I was on the highway at the time, did not hear sound if any |
| Location | |
|---|---|
| Address | Alton, IL |
| Latitude | 38° 39' 9.21'' N (38.652559°) |
| Longitude | 90° 7' 3.18'' W (-90.11755°) |
| Elevation | 123.565422m |
| Time and Duration | |
|---|---|
| Local Date & Time | 2025-04-11 22:30 CDT |
| UT Date & Time | 2025-04-12 03:30 UT |
| Duration | ≈3.5s |
| Direction | |
|---|---|
| Moving direction | From up right to down left |
| Descent Angle | 254° |
| Moving | |
|---|---|
| Facing azimuth | 62.11° |
| First azimuth | 81.61° |
| First elevation | 39° |
| Last azimuth | 54.76° |
| Last elevation | 13° |
| Brightness and color | |
|---|---|
| Stellar Magnitude | -13 |
| Color | Light Green |
| Concurrent Sound | |
|---|---|
| Observation | Unknown |
| Remarks | - |
| Delayed Sound | |
|---|---|
| Observation | Unknown |
| Remarks | - |
| Persistent train | |
|---|---|
| Observation | No |
| Duration | - |
| Length | - |
| Remarks | - |
| Terminal flash | |
|---|---|
| Observation | Unknown |
| Remarks | - |
| Fragmentation | |
|---|---|
| Observation | Yes |
| Remarks | Fizzled out past tree line |