2018-05-05 / 4UC 423-058703 / (74) Galatea
# | OBS | Observer | Occ | Meth. | Instr. | CC | TSRC | UT1 | UT2 | UT3 | UT4 | UT2E | UT3E | Dur. | Chrd |
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1 | show | Jonas Schenker | O+ | VID | M450 | CH | GPS++ | 21:29:57 | 21:32:53.78 | 21:33:00.94 | 21:37:01 | 0.04 | 0.04 | 7.16 | 86.6 |
2 | show | Roland Boninsegna | O+ | VID | M406 | BE | GPS++ | 21:30:15 | 21:33:19.77 | 21:33:22.33 | 21:36:00 | 0.16 | 0.16 | 2.56 | 31.0 |
3 | show | Malcolm Jennings | O+ | VID | M276 | UK | RAD++ | 21:28:00 | 21:33:42.88 | 21:33:50.78 | 21:38:00 | 0.04 | 0.22 | 7.90 | 95.6 |
4 | show | Peter Tickner | O+ | CCD | M300 | UK | GPS | 21:30:42 | 21:33:48.28 | 21:33:54.84 | 21:37:00 | 0.11 | 0.07 | 6.56 | 79.4 |
5 | show | Tim Haymes | O+ | VID | M300 | UK | GPS++ | 21:29:00 | 21:33:47.31 | 21:33:54.73 | 21:37:00 | 0.06 | 0.08 | 7.42 | 89.8 |
6 | show | Adrian Jones | O+ | VID | M303 | UK | GPS++ | 21:29:00 | 21:33:46.56 | 21:33:54.40 | 21:35:50 | 0.32 | 0.16 | 7.84 | 94.9 |
7 | show | John Talbot | O+ | VID | M303 | UK | GPS++ | 21:31:43 | 21:33:50.62 | 21:33:57.18 | 21:35:42 | 0.16 | 0.08 | 6.56 | 79.4 |
8 | show | A. Leroy/G. Dubos | O- | VID | M355 | FR | 21:32:00 | 21:35:00 | |||||||
9 | show | Bjoern Kattentidt | O- | VID | M279 | DE | 21:30:37 | 21:35:06 |
9 observations found in db: euraster
Available (probably) matching predictions (click on the link to switch):JPL#127 : 9bd442d6-30d2-48ed-a490-4640b8873191 [db: observed] |
Using prediction 9bd442d6-30d2-48ed-a490-4640b8873191 for map and profile fit
Ellipse and circular profile fits to the timings (chords) |
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Auto-Fit Result: Size = 132 x 95 km a',b' = 65.8, 47.4 km X0,Y0 = -2031.0, 10.9 km Mean diameter = 112 km From 7 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] : 9bd442d6-30d2-48ed-a490-4640b8873191 [observed] Occultation Date + Time : 2018-05-05 at 21:29:52 UT +/- 0.01 min [1] Object Designation : (74) Galatea Orbit Class : MBA Star Designation : GDR3 3677650448251051392 Star Coordinates (ICRF) : RA = 12 57 59.5263, DE = -05 30 11.554 [2] Star Magnitudes : G = 13.49 mag, RP = 12.98 mag, BP = 13.84 mag Object Magnitude : V = 14.2 mag Estimated Magnitude Drop : 1.2 mag Estimated Max. Duration : 9.8 sec Object Mean Diameter : 119 km (src: astorb) Speed of the shadow : 12.1 km/s Elongation to Moon & Sun : 96° (sunlit = 70%), Sun = 150° Cross-track uncertainty : 1.0 mas = 1 km = 0.02 path-width (1-sig) RUWE and duplicate source : 1.02 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#127 Object is a Gaia mass determination target ! [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) |