| Observer | |
|---|---|
| Name | Alexandra T |
| Experience Level | 1/5 |
| Remarks | It was so bright that I thought a small plane or helicopter was going down at first. I also called 911 in case it was a flare but since it was over the lake. |
| Location | |
|---|---|
| Address | Chicago, IL |
| Latitude | 41° 52' 32.49'' N (41.875693°) |
| Longitude | 87° 36' 50.05'' W (-87.613903°) |
| Elevation | 175.205704m |
| Time and Duration | |
|---|---|
| Local Date & Time | 2023-02-19 20:00 CST |
| UT Date & Time | 2023-02-20 02:00 UT |
| Duration | ≈3.5s |
| Direction | |
|---|---|
| Moving direction | From up right to down left |
| Descent Angle | 232° |
| Moving | |
|---|---|
| Facing azimuth | 77.59° |
| First azimuth | 6.34° |
| First elevation | 31° |
| Last azimuth | 2.88° |
| Last elevation | 4° |
| Brightness and color | |
|---|---|
| Stellar Magnitude | -15 |
| Color | Dark Green, Green, Light Green |
| Concurrent Sound | |
|---|---|
| Observation | No |
| Remarks | - |
| Delayed Sound | |
|---|---|
| Observation | No |
| Remarks | - |
| Persistent train | |
|---|---|
| Observation | Yes |
| Duration | 4s |
| Length | 99.99° |
| Remarks | The ball itself was a very bright green, followed by gray smoke train that was no wider than the ball, but was very long. I don’t for sure how many degrees…I guessed that but it was very long. And it was night out but I could still see the gray smoky trail |
| Terminal flash | |
|---|---|
| Observation | Unknown |
| Remarks | - |
| Fragmentation | |
|---|---|
| Observation | Unknown |
| Remarks | - |