| Event |
| Date | 2023-04-21 |
| Asteroid | (121731) 1999 XU170 |
| Star | UCAC4 616-043288 |
| Asteroid magnitude | 20.34m |
| Star magnitude | 11.73m |
| Combined magnitude | 11.73m |
| Expected drop | 8.60m |
| Expected time | 21:52:27 UT ± 2.72 s |
| Expected duration | 0.41 s |
| 1-σ path width error | 5.09 |
| Star RUWE | 0.95 |
| 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 | Negative |
| Start observation | 21:51:27 UT |
| End observation | 21:53:27 UT |
| Technical data |
| Telescope | Newtonian 25/100 [cm] |
| Camera | DVTI |
| Exposure | 0.05 s |
| Observation method | Analogue & digital video |
| Time source | GPS |
| Signal noise ratio | |
| Wind | B |
| Temperature | 10°C |
| Transparency | Clear |
| Seeing | Slight flickering |
| Additional information |
| Comment | |
| SODIS | View report (requires account) |
| OWC | View more details |
| Last modified | 2023-04-28 07:41:45 |
