| Event |
| Date | 2023-06-03 |
| Asteroid | (9038) Helensteel |
| Star | UCAC4 433-072036 |
| Asteroid magnitude | 17.07m |
| Star magnitude | 11.65m |
| Combined magnitude | 11.64m |
| Expected drop | 5.43m |
| Expected time | 22:15:21 UT ± 2.79 s |
| Expected duration | 0.55 s |
| 1-σ path width error | 1.13 |
| Star RUWE | 1.00 |
| Station |
| Observer | Anna Marciniak |
| Latitude | 052 16 36.8 |
| Longitude | 017 04 30.8 |
| Altitude | 83 m |
| Geodetic system | WGS84 |
| Nearest city | Poznan |
| Result |
| Overal result | Negative |
| Start observation | 22:14:26 UT |
| End observation | 22:16:15 UT |
| Technical data |
| Telescope | Newtonian 40/180 [cm] |
| Camera | Andor Zyla 5.5 camera with sCMOS sensor |
| Exposure | 0.15 s |
| Observation method | Sequential images |
| Time source | GPS |
| Signal noise ratio | 8.9 |
| Wind | 3 B |
| Temperature | 19°C |
| Transparency | Thin cloud < 2 [mag loss <2 mag.] |
| Seeing | Slight flickering |
| Additional information |
| Comment | Probability: 30%
|
| SODIS | View report (requires account) |
| OWC | View more details |
| Last modified | 2023-07-20 21:26:33 |
