2018-02-18 / 4UC 592-017545 / (110) Lydia
| # | OBS | Observer | Occ | Meth. | Instr. | CC | TSRC | UT1 | UT2 | UT3 | UT4 | UT2E | UT3E | Dur. | Chrd |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | show | Henk De Groot | O+ | VID | M356 | NL | GPS++ | 20:13:19 | 20:17:38.81 | 20:17:54.74 | 20:23:10 | 0.09 | 0.09 | 15.93 | 82.8 |
| 2 | show | Jan-Maarten Winkel | O+ | VID | M310 | NL | GPS++ | 20:16:55 | 20:17:45.79 | 20:17:56.83 | 20:18:55 | 0.33 | 0.33 | 11.04 | 57.4 |
| 3 | show | Roland Boninsegna | O- | VID | M406 | BE | 20:15:18 | 20:20:58 |
3 observations found in db: euraster
Available (probably) matching predictions (click on the link to switch):| JPL#112 : 8ff25640-e1b4-40a4-aabe-f64c40cc1f21 [db: observed] |
Using prediction 8ff25640-e1b4-40a4-aabe-f64c40cc1f21 for map and profile fit
| Ellipse and circular profile fits to the timings (chords) |
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Auto-Fit Result: X0,Y0 = -201.3, 25.6 km Circular diameter = 91 km From 2 chords (VID) 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: 2018-02-18, 20:17 UT (JD = 2458168.345)
| DAMIT | Q | P (h) | λ, β | JD0 | JD-JD0 | φ0 | Version | Modified | Vol-equiv D | Cmnt |
|---|---|---|---|---|---|---|---|---|---|---|
| # 152 | None | 10.926 | 149°, -55° | 2.436494e6 | 21674.3 | 0.0° | None | 2010-05-27 | 91.0 +/- 1.0 km | 2009-02-26 |
| # 153 | None | 10.926 | 331°, -61° | 2.436494e6 | 21674.3 | 0.0° | None | 2010-05-27 | 95.5 +/- 1.5 km | 2009-02-26 |
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] : 8ff25640-e1b4-40a4-aabe-f64c40cc1f21 [observed] Occultation Date + Time : 2018-02-18 at 20:14:27 UT +/- 0.04 min [1] Object Designation : (110) Lydia Orbit Class : MBA Star Designation : GDR3 3445554401306346368 Star Coordinates (ICRF) : RA = 05 22 33.0158, DE = +28 14 24.952 [2] Star Magnitudes : G = 13.6 mag, RP = 12.92 mag, BP = 14.13 mag Object Magnitude : V = 12.89 mag Estimated Magnitude Drop : 0.5 mag Estimated Max. Duration : 16.5 sec Object Mean Diameter : 86 km (src: astorb) Speed of the shadow : 5.2 km/s Elongation to Moon & Sun : 78° (sunlit = 9%), Sun = 112° Cross-track uncertainty : 1.7 mas = 2 km = 0.03 path-width (1-sig) RUWE and duplicate source : 1.11 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#112 [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) |