2021-10-12 / 4UC 485-136543 / (392) Wilhelmina
# | OBS | Observer | Occ | Meth. | Instr. | CC | TSRC | UT1 | UT2 | UT3 | UT4 | UT2E | UT3E | Dur. | Chrd |
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1 | show | Ferran Casarramona | O+ | VID | M200 | ES | GPS++ | 22:47:48 | 22:53:05.74 | 22:53:12.34 | 22:57:47 | 0.12 | 0.08 | 6.60 | 64.0 |
2 | show | Joan Aragones | O+ | CCD | L102 | ES | NTP+ | 22:51:07 | 22:52:18.58 | 22:52:27.06 | 22:53:37 | 1.21 | 1.21 | 8.48 | 82.3 |
3 | show | Joan Rovira | O+ | VID | M250 | ES | GPS++ | 22:49:00 | 22:52:11.29 | 22:52:18.31 | 22:55:15 | 0.08 | 0.06 | 7.02 | 68.1 |
4 | show | Christian Weber | O+ | CCD | M150 | DE | GPS++ | 22:49:18 | 22:50:27.01 | 22:50:28.88 | 22:50:58 | 0.19 | 0.19 | 1.87 | 18.1 |
4 observations found in db: euraster
Available (probably) matching predictions (click on the link to switch):JPL#70 : a43fcc0d-6662-4d82-b65f-c7350e4d1bd6 [db: observed] |
Using prediction a43fcc0d-6662-4d82-b65f-c7350e4d1bd6 for map and profile fit
Ellipse and circular profile fits to the timings (chords) |
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Auto-Fit Result: Size = 86 x 58 km a',b' = 43.1, 29.1 km X0,Y0 = 458.3, 34.7 km Mean diameter = 71 km From 4 chords (VID,CCD) 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] : a43fcc0d-6662-4d82-b65f-c7350e4d1bd6 [observed] Occultation Date + Time : 2021-10-12 at 22:58:48 UT +/- 0.04 min [1] Object Designation : (392) Wilhelmina Orbit Class : MBA Star Designation : GDR3 2664607163662297984 Star Coordinates (ICRF) : RA = 23 22 42.6888, DE = +06 54 28.245 [2] Star Magnitudes : G = 13.06 mag, RP = 12.54 mag, BP = 13.42 mag Object Magnitude : V = 13.4 mag Estimated Magnitude Drop : 0.9 mag Estimated Max. Duration : 6.5 sec Object Mean Diameter : 63 km (src: astorb) Speed of the shadow : 9.7 km/s Elongation to Moon & Sun : 68° (sunlit = 48%), Sun = 153° Cross-track uncertainty : 2.0 mas = 2 km = 0.04 path-width (1-sig) RUWE and duplicate source : 0.88 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#70 [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) |