| Event | |
| Date | 2023-04-08 |
| Asteroid | (4138) Kalchas |
| Star | UCAC4 558-018608 |
| Asteroid magnitude | 18.04m |
| Star magnitude | 13.36m / 13.36m / 13.03m (¹) |
| Combined magnitude | 13.34m / 13.34m / 13.02m (¹) |
| Expected drop | 4.70m / 4.70m / 1.42m (¹) |
| Expected time | 19:13:42 UT ± 2.54 s |
| Expected duration | 1.91 s |
| 1-σ path width error | 0.60 |
| Star RUWE | 1.05 |
| Station | |
| Observer | Anna Marciniak |
| Latitude | 052 36 14.0 |
| Longitude | 016 02 33.4 |
| Altitude | 65 m |
| Geodetic system | WGS84 |
| Nearest city | Sierakow |
| Result | |
| Overal result | Positive |
| Start observation | 19:12:40 UT |
| End observation | 19:14:58 UT |
| Disappearance | 19:13:39.280 UT ± 0.14 s |
| Reappearance | 19:13:40.650 UT ± 0.14 s |
| Duration | 1.37 s |
| Plotcode | include observation |
| Technical data | |
| Telescope | SCT 35/185 [cm] |
| Camera | Andor Zyla 5.5 with sCMOS sensor |
| Exposure | 0.25 s |
| Observation method | Sequential images |
| Time source | GPS |
| Signal noise ratio | 8 |
| Wind | 2 B |
| Temperature | 6°C |
| Transparency | Clear |
| Seeing | Steady |
| Additional information | |
| Comment | Probability: 57%. |
| SODIS | View report (requires account) |
| OWC | View more details |
| Last modified | 2023-04-12 17:40:54 |
(¹) Pobliska gwiazda wpływa na obserwację. Tabela zawiera wartość oryginalną oraz dla apertur odpowiednio 4 i 8 sekund łuku
Załączniki
