| Event |
| Date | 2024-12-27 |
| Asteroid | (16831) 1997 WM21 |
| Star | UCAC4 525-032955 |
| Asteroid magnitude | 15.88m |
| Star magnitude | 12.85m |
| Combined magnitude | 12.79m |
| Expected drop | 3.09m |
| Expected time | 03:22:30 UT ± 0.36 s |
| Expected duration | 0.55 s |
| 1-σ path width error | 0.20 |
| Star RUWE | 1.00 |
| Station |
| Observer | Marcin Filipek |
| Latitude | 50 12 43.8 |
| Longitude | 19 45 02.8 |
| Altitude | 450 m |
| Geodetic system | WGS84 |
| Nearest city | Jerzmanowice |
| Result |
| Overal result | Positive |
| Start observation | 03:22:20 UT |
| End observation | 03:22:40 UT |
| Disappearance | 03:22:30.70 UT ± 0.02 s |
| Reappearance | 03:22:31.04 UT ± 0.02 s |
| Duration | 0.34 s |
| Plotcode | include observation |
| Technical data |
| Telescope | Newtonian 40/180 [cm] |
| Camera | DVTI |
| Exposure | 0.04 s |
| Observation method | Analogue & digital video |
| Time source | GPS |
| Signal noise ratio | 10.0 |
| Wind | 0 B |
| Temperature | -3°C |
| Transparency | Clear |
| Seeing | Slight flickering |
| Additional information |
| Comment | |
| SODIS | View report (requires account) |
| OWC | View more details |
| Last modified | 2025-01-15 09:37:11 |
