2022-03-08 / 4UC 581-038152 / (778) Theobalda
# | OBS | Observer | Occ | Meth. | Instr. | CC | TSRC | UT1 | UT2 | UT3 | UT4 | UT2E | UT3E | Dur. | Chrd |
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1 | show | Chad Ellington | O+ | VID | M250 | DE | GPS++ | 20:31:30 | 20:32:56.99 | 20:33:02.68 | 20:34:30 | 0.31 | 0.14 | 5.69 | 43.2 |
2 | show | Henk De Groot | O+ | VID | M356 | NL | GPS++ | 20:29:29 | 20:32:44.25 | 20:32:53.85 | 20:35:53 | 1.45 | 1.45 | 9.60 | 73.0 |
3 | show | Jan-Maarten Winkel | O+ | VID | M356 | NL | GPS++ | 20:31:49 | 20:32:45.30 | 20:32:52.34 | 20:33:49 | 0.32 | 0.32 | 7.04 | 53.5 |
3 observations found in db: euraster
Available (probably) matching predictions (click on the link to switch):JPL#57 : 4bfca85e-23f0-4e4f-b4c8-3094241c970c [db: observed] |
JPL#57 : 8af80b11-01c1-4b4c-b939-baf714fe7258 [db: observed] |
Using prediction 4bfca85e-23f0-4e4f-b4c8-3094241c970c for map and profile fit
Ellipse and circular profile fits to the timings (chords) |
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Auto-Fit Result: Size = 77 x 58 km a',b' = 38.6, 29.1 km X0,Y0 = -1657.6, 25.1 km Mean diameter = 67 km From 3 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] : 4bfca85e-23f0-4e4f-b4c8-3094241c970c [observed] Occultation Date + Time : 2022-03-08 at 20:37:37 UT +/- 0.07 min [1] Object Designation : (778) Theobalda Orbit Class : MBA Star Designation : GDR3 0871088675518901376 Star Coordinates (ICRF) : RA = 07 23 32.6178, DE = +26 05 41.262 [2] Star Magnitudes : G = 15.26 mag, RP = 14.71 mag, BP = 15.64 mag Object Magnitude : V = 14.13 mag Estimated Magnitude Drop : 0.3 mag Estimated Max. Duration : 8.5 sec Object Mean Diameter : 64 km (src: astorb) Speed of the shadow : 7.6 km/s Elongation to Moon & Sun : 48° (sunlit = 35%), Sun = 120° Cross-track uncertainty : 4.0 mas = 5 km = 0.08 path-width (1-sig) RUWE and duplicate source : 0.96 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#57 [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) |