2011-12-29 / 2UC 40143290 / (198) Ampella
# | OBS | Observer | Occ | Meth. | Instr. | CC | TSRC | UT1 | UT2 | UT3 | UT4 | UT2E | UT3E | Dur. | Chrd |
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1 | show | Francesco Fumagalli | O+ | CCD | M305 | CH | 01:56:00 | 01:56:49 | 01:56:54 | 01:57:40 | 1 | 1 | 5.00 | 46.5 | |
2 | show | Alberto Ossola | O+ | CCD | M230 | CH | PHONE | 01:56:45 | 01:56:49.6 | 01:56:54.6 | 01:57:15 | 0.2 | 0.2 | 5.00 | 46.5 |
3 | show | S. Sposetti et al | O+ | VID | M200 | CH | GPS++ | 01:56:05 | 01:56:49.71 | 01:56:55.71 | 01:57:29 | 0.1 | 0.1 | 6.00 | 55.8 |
4 | show | Stefano Sposetti | O+ | VID | M400 | CH | GPS++ | 01:56:18 | 01:56:50.77 | 01:56:55.61 | 01:57:57 | 0.04 | 0.04 | 4.84 | 45.0 |
4 observations found in db: euraster
Available (probably) matching predictions (click on the link to switch):JPL#94 : 5ba15c4b-cba4-47f6-982a-8d9db0c58cf1 [db: observed] |
Using prediction 5ba15c4b-cba4-47f6-982a-8d9db0c58cf1 for map and profile fit
Ellipse and circular profile fits to the timings (chords) |
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Auto-Fit Result: Size = 66 x 43 km a',b' = 33.1, 21.4 km X0,Y0 = 542.8, 21.2 km Mean diameter = 53 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] : 5ba15c4b-cba4-47f6-982a-8d9db0c58cf1 [observed] Occultation Date + Time : 2011-12-29 at 02:05:34 UT +/- 0.01 min [1] Object Designation : (198) Ampella Orbit Class : MBA Star Designation : GDR3 3418669310486586752 Star Coordinates (ICRF) : RA = 05 04 12.4248, DE = +23 40 06.476 [2] Star Magnitudes : G = 12.05 mag, RP = 11.67 mag, BP = 12.28 mag Object Magnitude : V = 11.67 mag Estimated Magnitude Drop : 0.6 mag Estimated Max. Duration : 6.2 sec Object Mean Diameter : 57 km (src: astorb) Speed of the shadow : 9.3 km/s Elongation to Moon & Sun : 106° (sunlit = 21%), Sun = 160° Cross-track uncertainty : 1.7 mas = 1 km = 0.03 path-width (1-sig) RUWE and duplicate source : 0.95 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#94 [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) |