| Event |
| Date | 2023-04-30 |
| Asteroid | (38439) 1999 SQ4 |
| Star | TYC 191-00661-1 |
| Asteroid magnitude | 19.44m |
| Star magnitude | 9.45m |
| Combined magnitude | 9.45m |
| Expected drop | 9.99m |
| Expected time | 21:38:13 UT ± 1.97 s |
| Expected duration | 0.29 s |
| 1-σ path width error | 3.94 |
| Star RUWE | 0.90 |
| 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 | 21:37:43 UT |
| End observation | 21:38:43 UT |
| Technical data |
| Telescope | Newtonian 25/100 [cm] |
| Camera | DVTI |
| Exposure | 0.02 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 | 2023-05-17 06:04:11 |
