2021-07-30 / 4UC 515-068400 / (105) Artemis
# | OBS | Observer | Occ | Meth. | Instr. | CC | TSRC | UT1 | UT2 | UT3 | UT4 | UT2E | UT3E | Dur. | Chrd |
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1 | show | F. Van Den Abbeel | O+ | VID | M200 | BE | GPS++ | 00:48:45 | 00:49:42.25 | 00:49:46.57 | 00:50:45 | 0.16 | 0.16 | 4.32 | 36.3 |
2 | show | Philippe Morel | O+ | CCD | M355 | FR | NTP | 00:49:27 | 00:49:44.20 | 00:49:56.57 | 00:50:14 | 0.52 | 0.52 | 12.37 | 103.9 |
3 | show | Roland Boninsegna | O+ | CCD | M305 | BE | GPS++ | 00:48:02 | 00:49:41.46 | 00:49:52.32 | 00:52:02 | 0.05 | 0.05 | 10.86 | 91.2 |
4 | show | Maurice Audejean | O- | CCD | M320 | FR | 00:50:01 | 00:51:51 | |||||||
5 | show | Jan-Maarten Winkel | O- | VID | M356 | NL | 00:48:30 | 00:50:29 |
5 observations found in db: euraster
Available (probably) matching predictions (click on the link to switch):JPL#138 : 51168473-e6ae-4dec-83d5-85e838a16409 [db: observed] |
Using prediction 51168473-e6ae-4dec-83d5-85e838a16409 for map and profile fit
Ellipse and circular profile fits to the timings (chords) |
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Auto-Fit Result: Size = 187 x 91 km a',b' = 93.6, 45.5 km X0,Y0 = -3122.0, 49.1 km Mean diameter = 131 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] : 51168473-e6ae-4dec-83d5-85e838a16409 [observed] Occultation Date + Time : 2021-07-30 at 00:58:40 UT +/- 0.28 min [1] Object Designation : (105) Artemis Orbit Class : MBA Star Designation : GDR3 4499388605214612480 Star Coordinates (ICRF) : RA = 17 47 00.8961, DE = +12 53 29.791 [2] Star Magnitudes : G = 11.91 mag, RP = 11.13 mag, BP = 12.56 mag Object Magnitude : V = 11.96 mag Estimated Magnitude Drop : 0.8 mag Estimated Max. Duration : 14.1 sec Object Mean Diameter : 119 km (src: astorb) Speed of the shadow : 8.4 km/s Elongation to Moon & Sun : 112° (sunlit = 65%), Sun = 127° Cross-track uncertainty : 2.7 mas = 2 km = 0.02 path-width (1-sig) RUWE and duplicate source : 2.26 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#138 [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) |