2025-04-28 / UCAC4 339-063063 / (476) Hedwig
| # | OBS | Observer | Occ | Meth. | Instr. | CC | TSRC | UT1 | UT2 | UT3 | UT4 | UT2E | UT3E | Dur. | Chrd |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | show | Jean-Francois Pittet | O+ | VID | M254 | DE | GPS | 20:54:16 | 20:55:10.1 | 20:55:19.9 | 20:56:15 | 0.5 | 0.5 | 9.80 | 97.0 |
| 2 | show | Björn Kattentidt | O+ | VID | M280 | DE | GPS | 20:54:10 | 20:55:09.308 | 20:55:21.065 | 20:56:32 | 0.428 | 0.428 | 11.76 | 116.4 |
| 3 | show | Joachim Siegert | O+ | VID | M203 | DE | GPS | 20:54:18 | 20:55:12.2 | 20:55:25.18 | 20:56:18 | 0.8 | 0.15 | 12.98 | 128.5 |
| 4 | show | Jiri Kubanek | O+ | VID | M200 | CZ | GPS | 20:53:43 | 20:55:13.1 | 20:55:16.9 | 20:56:43 | 0.6 | 0.6 | 3.80 | 37.6 |
| 5 | show | Alfonso Noschese | O- | VID | M300 | IT | GPS | 20:54:11 | 20:55:10 |
5 observations found in db: sodis
Available (probably) matching predictions (click on the link to switch):| JPL#133 : 6b5a0c50-85d0-11ef-78cd-8104dbab5a4b [db: asteroids] |
Using prediction 6b5a0c50-85d0-11ef-78cd-8104dbab5a4b for map and profile fit
| Ellipse and circular profile fits to the timings (chords) |
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Auto-Fit Result: Size = 135 x 114 km a',b' = 67.4, 57.0 km X0,Y0 = -2728.5, 21.4 km Mean diameter = 124 km From 4 chords (VID) You can enter space separated chord numbers (example: 11 4 8) or a method like VIS to ignore all visual timings, or a time source like RAD and NTP (but not GPS). If the plot disappears, then there are less than 2 chords left (too much ignored, go back with browser). Check SiMDA for size and mass data. Check Johnston Archive for satellites. |
| Map with groundtrack and observer stations |
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| Event Details |
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Occultation UUID [and DB] : 6b5a0c50-85d0-11ef-78cd-8104dbab5a4b [asteroids] Occultation Date + Time : 2025-04-28 at 20:48:19 UT +/- 0.01 min [1] Object Designation : (476) Hedwig Orbit Class : MBA Star Designation : GDR3 3501526415106390400 Star Coordinates (ICRF) : RA = 12 34 52.4527, DE = -22 18 01.787 [2] Star Magnitudes : G = 13.29 mag, RP = 12.52 mag, BP = 13.94 mag Object Magnitude : V = 12.55 mag Estimated Magnitude Drop : 0.4 mag Estimated Max. Duration : 11.8 sec Object Mean Diameter : 116.8 km (src: astorb) Speed of the shadow : 9.9 km/s Elongation to Moon & Sun : 142° (sunlit = 2%), Sun = 153° Cross-track uncertainty : 1.7 mas = 2 km = 0.02 path-width (1-sig) RUWE and duplicate source : 0.97 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#133 [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0 |
| More Data and Informations |
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(If error 404: link not valid which means no data available)
| Aladin Sky Atlas |
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| Aladin Lite direct link (has Gaia overlay) |