2021-06-30 / 4UC 353-083150 / (420) Bertholda
# | OBS | Observer | Occ | Meth. | Instr. | CC | TSRC | UT1 | UT2 | UT3 | UT4 | UT2E | UT3E | Dur. | Chrd |
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1 | show | Davide Alboresi | O+ | CCD | M203 | IT | GPS++ | 22:27:04 | 22:28:24.93 | 22:28:39.03 | 22:30:02 | 0.20 | 0.20 | 14.10 | 156.5 |
2 | show | Alberto Ossola | O+ | VID | M230 | CH | GPS++ | 22:25:52 | 22:28:44.72 | 22:28:58.56 | 22:30:20 | 0.24 | 0.16 | 13.84 | 153.6 |
3 | show | Andrea Manna | O+ | VID | M200 | CH | GPS++ | 22:25:01 | 22:28:45.83 | 22:28:58.63 | 22:31:02 | 0.16 | 0.16 | 12.80 | 142.1 |
3 observations found in db: euraster
Available (probably) matching predictions (click on the link to switch):JPL#132 : acbb472f-6acb-488c-bbe7-50183300c279 [db: observed] |
Using prediction acbb472f-6acb-488c-bbe7-50183300c279 for map and profile fit
Ellipse and circular profile fits to the timings (chords) |
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Auto-Fit Result: Size = 170 x 99 km a',b' = 85.0, 49.7 km X0,Y0 = -1310.5, 14.7 km Mean diameter = 130 km From 3 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] : acbb472f-6acb-488c-bbe7-50183300c279 [observed] Occultation Date + Time : 2021-06-30 at 22:28:17 UT +/- 0.03 min [1] Object Designation : (420) Bertholda Orbit Class : MBA Star Designation : GDR3 4127546691970540672 Star Coordinates (ICRF) : RA = 16 52 03.2057, DE = -19 35 11.544 [2] Star Magnitudes : G = 13.12 mag, RP = 12.54 mag, BP = 13.51 mag Object Magnitude : V = 13.63 mag Estimated Magnitude Drop : 1.0 mag Estimated Max. Duration : 12.8 sec Object Mean Diameter : 141 km (src: astorb) Speed of the shadow : 11.1 km/s Elongation to Moon & Sun : 105° (sunlit = 59%), Sun = 154° Cross-track uncertainty : 1.3 mas = 2 km = 0.02 path-width (1-sig) RUWE and duplicate source : 0.99 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#132 [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) |