2019-02-10 / 4UC 660-030215 / (71) Niobe
| # | OBS | Observer | Occ | Meth. | Instr. | CC | TSRC | UT1 | UT2 | UT3 | UT4 | UT2E | UT3E | Dur. | Chrd |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | show | Lionel Rousselot | O+ | CCD | M250 | FR | GPS++ | 18:51:33 | 18:53:42.79 | 18:53:49.04 | 18:55:33 | 0.03 | 0.03 | 6.25 | 74.4 |
| 2 | show | Malcolm Jennings | O+ | VID | M276 | UK | RAD++ | 18:48:00 | 18:53:03.52 | 18:53:09.04 | 18:58:00 | 0.02 | 0.02 | 5.52 | 65.7 |
| 3 | show | Philip Denyer | O+ | VID | M235 | UK | GPS++ | 18:50:23 | 18:53:01.03 | 18:53:07.75 | 18:54:57 | 0.04 | 0.04 | 6.72 | 80.0 |
| 4 | show | Simon Kidd | O+ | CCD | M350 | UK | GPS++ | 18:52:03 | 18:52:57.30 | 18:53:03.74 | 18:55:00 | 0.02 | 0.02 | 6.44 | 76.6 |
| 5 | show | Alex Pratt | O+ | VID | M279 | UK | GPS++ | 18:51:59 | 18:52:39.33 | 18:52:43.13 | 18:53:05 | 0.04 | 0.04 | 3.80 | 45.2 |
| 6 | show | Tim Haymes | O- | VID | M203 | UK | 18:50:00 | 18:56:00 | |||||||
| 7 | show | John Talbot | O- | VID | M303 | UK | 18:51:00 | 18:55:00 |
7 observations found in db: euraster
Available (probably) matching predictions (click on the link to switch):| JPL#110 : 354d9ef2-5288-40a0-bc65-700d12e74d08 [db: observed] |
Using prediction 354d9ef2-5288-40a0-bc65-700d12e74d08 for map and profile fit
| Ellipse and circular profile fits to the timings (chords) |
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Auto-Fit Result: Size = 113 x 77 km a',b' = 56.6, 38.5 km X0,Y0 = 652.2, 23.4 km Mean diameter = 93 km From 5 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. |
Sky projection (artificial light) for occ. time: 2019-02-10, 18:52 UT (JD = 2458525.286)
| DAMIT | Q | P (h) | λ, β | JD0 | JD-JD0 | φ0 | Version | Modified | Vol-equiv D | Cmnt |
|---|---|---|---|---|---|---|---|---|---|---|
| # 1014 | None | 35.852 | 88°, -33° | 2.442093e6 | 16432.3 | 0.0° | None | None | not scaled | 2016-01-04 |
Image size: 300px. Transparent image background for copy & paste
| Map with groundtrack and observer stations |
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| Event Details |
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Occultation UUID [and DB] : 354d9ef2-5288-40a0-bc65-700d12e74d08 [observed] Occultation Date + Time : 2019-02-10 at 18:54:46 UT +/- 0.06 min [1] Object Designation : (71) Niobe Orbit Class : MBA Star Designation : GDR3 0201727707585730176 Star Coordinates (ICRF) : RA = 05 03 05.7514, DE = +41 51 14.411 [2] Star Magnitudes : G = 11.93 mag, RP = 11.17 mag, BP = 12.56 mag Object Magnitude : V = 12.23 mag Estimated Magnitude Drop : 0.9 mag Estimated Max. Duration : 7.0 sec Object Mean Diameter : 83 km (src: astorb) Speed of the shadow : 11.9 km/s Elongation to Moon & Sun : 57° (sunlit = 29%), Sun = 116° Cross-track uncertainty : 1.3 mas = 2 km = 0.03 path-width (1-sig) RUWE and duplicate source : 1.09 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#110 [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) |