2017-12-28 / 4UC 697-029570 / (326) Tamara
# | OBS | Observer | Occ | Meth. | Instr. | CC | TSRC | UT1 | UT2 | UT3 | UT4 | UT2E | UT3E | Dur. | Chrd |
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1 | show | Roland Boninsegna | O+ | VID | M406 | BE | GPS++ | 22:20:02 | 22:21:52.61 | 22:21:55.17 | 22:26:01 | 0.32 | 0.32 | 2.56 | 31.5 |
2 | show | Emmanuel Conseil | O+ | CCD | M150 | FR | GPS | 22:20:21 | 22:22:03.05 | 22:22:07.05 | 22:24:51 | 1 | 1 | 4.00 | 49.2 |
3 | show | Tomas Janik | O+ | VID | M153 | CZ | GPS++ | 22:20:20 | 22:20:59.20 | 22:21:06.56 | 22:21:59 | 0.48 | 0.48 | 7.36 | 90.5 |
4 | show | Henk De Groot | O- | VID | M356 | NL | 22:17:27 | 22:24:50 |
4 observations found in db: euraster
Available (probably) matching predictions (click on the link to switch):JPL#123 : 02d273db-6694-4c69-8001-bc5534e7bfff [db: observed] |
Using prediction 02d273db-6694-4c69-8001-bc5534e7bfff for map and profile fit
Ellipse and circular profile fits to the timings (chords) |
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Auto-Fit Result: Size = 136 x 71 km a',b' = 68.0, 35.4 km X0,Y0 = -40.5, 31.8 km Mean diameter = 98 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] : 02d273db-6694-4c69-8001-bc5534e7bfff [observed] Occultation Date + Time : 2017-12-28 at 22:23:00 UT +/- 0.01 min [1] Object Designation : (326) Tamara Orbit Class : MBA Star Designation : GDR3 0270369157656306048 Star Coordinates (ICRF) : RA = 04 23 24.3584, DE = +49 18 50.781 [2] Star Magnitudes : G = 12.03 mag, RP = 11.05 mag, BP = 13.02 mag Object Magnitude : V = 13.75 mag Estimated Magnitude Drop : 1.9 mag Estimated Max. Duration : 7.6 sec Object Mean Diameter : 93 km (src: astorb) Speed of the shadow : 12.3 km/s Elongation to Moon & Sun : 46° (sunlit = 77%), Sun = 144° Cross-track uncertainty : 1.7 mas = 2 km = 0.03 path-width (1-sig) RUWE and duplicate source : 0.97 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#123 [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) |