| Event | |
| Date | 2025-04-04 |
| Asteroid | (144) Vibilia |
| Star | UCAC4 531-050651 |
| Asteroid magnitude | 13.23m |
| Star magnitude | 13.43m |
| Combined magnitude | 12.57m |
| Expected drop | 0.66m |
| Expected time | 23:16:19 UT ± 0.48 s |
| Expected duration | 17.89 s |
| 1-σ path width error | 0.01 |
| Star RUWE | 1.10 |
| Station | |
| Observer | Marek Zawilski |
| Latitude | 51 54 48.3 |
| Longitude | 19 03 22.4 |
| Altitude | 140 m |
| Geodetic system | WGS84 |
| Nearest city | Lodz |
| Result | |
| Overal result | Negative |
| Start observation | 23:14:05 UT |
| End observation | 23:18:00 UT |
| Technical data | |
| Telescope | SCT 20/203 [cm] |
| Camera | ZWO ASI 120MM |
| Exposure | 0.50 s |
| Observation method | Analogue & digital video |
| Time source | GPS |
| Signal noise ratio | 14.6 |
| Wind | 2 B |
| Temperature | 11°C |
| Transparency | Thin cloud < 2 [mag loss <2 mag.] |
| Seeing | Slight flickering |
| Additional information | |
| Comment | The light drop on the first LC was caused by a small cloud probably (it was later by 15-20 s than the predicted mid-time) and was both for the occulted and comparison star. No occultation can be seen on the normalized LC. The final result: no occultation longer than 0.5 s. |
| Annotations | campaign: SlowRotators |
| SODIS | View report (requires account) |
| OWC | View more details |
| Last modified | 2025-04-06 10:46:20 |
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