| Observer | |
|---|---|
| Name | John B |
| Experience Level | 3/5 |
| Remarks | This object was majestic, a 4 cornered square traveling right to left as I faced south, nearly level. 4 perfectly aligned and synchronous travelers for a full 12 seconds with Smokey contrail. I’ve never seen anything quite like it. Disappeared to the east and contrail remained for a few moments. Emerald green initially, then blue to yellow shift as it passed. |
| Location | |
|---|---|
| Address | Spring Grove, IL |
| Latitude | 42° 25' 50.58'' N (42.430716°) |
| Longitude | 88° 13' 44.76'' W (-88.229101°) |
| Elevation | 269.551941m |
| Time and Duration | |
|---|---|
| Local Date & Time | 2019-03-05 05:31 CDT |
| UT Date & Time | 2019-03-05 11:31 UT |
| Duration | ≈20s |
| Direction | |
|---|---|
| Moving direction | From down right to up left |
| Descent Angle | 275° |
| Moving | |
|---|---|
| Facing azimuth | 180° |
| First azimuth | 270° |
| First elevation | 48° |
| Last azimuth | 100° |
| Last elevation | 45° |
| Brightness and color | |
|---|---|
| Stellar Magnitude | -14 |
| Color | Green |
| Concurrent Sound | |
|---|---|
| Observation | No |
| Remarks | - |
| Delayed Sound | |
|---|---|
| Observation | No |
| Remarks | - |
| Persistent train | |
|---|---|
| Observation | Unknown |
| Duration | - |
| Length | - |
| Remarks | - |
| Terminal flash | |
|---|---|
| Observation | Unknown |
| Remarks | - |
| Fragmentation | |
|---|---|
| Observation | Unknown |
| Remarks | - |