2021-02-18 / 4UC 484-021613 / (130) Elektra
| # | OBS | Observer | Occ | Meth. | Instr. | CC | TSRC | UT1 | UT2 | UT3 | UT4 | UT2E | UT3E | Dur. | Chrd |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | show | Miguel Sanchez | O+ | CCD | M200 | ES | NTP | 22:25:11 | 22:35:15.69 | 22:35:28.78 | 22:45:05 | 0.16 | 0.16 | 13.09 | 150.5 |
| 2 | show | Jean-Louis Dumont | O+ | CCD | M280 | FR | GPS+ | 22:35:46 | 22:36:37.66 | 22:36:50.94 | 22:39:46 | 0.10 | 0.10 | 13.28 | 152.7 |
| 3 | show | Bruno Guillet | O+ | CCD | V112 | FR | NTP | 22:35:53 | 22:36:51.63 | 22:37:02.10 | 22:39:59 | 0.95 | 0.95 | 10.47 | 120.4 |
| 4 | show | Stephane Razemon | O+ | CCD | M203 | FR | RAD++ | 22:32:06 | 22:37:01.76 | 22:37:14.23 | 22:39:09 | 0.20 | 0.20 | 12.47 | 143.4 |
| 5 | show | Mike Rushton | O+ | CCD | V112 | UK | NTP | 22:34:01 | 22:37:05.85 | 22:37:15.12 | 22:39:59 | 0.33 | 0.33 | 9.27 | 106.6 |
| 6 | show | Olivier Schreurs | O- | VID | M280 | BE | 22:36:03 | 22:38:14 | |||||||
| 7 | show | Philip Denyer | O- | VID | M235 | UK | 22:34:54 | 22:38:57 | |||||||
| 8 | show | Simon Kidd | O- | CCD | M350 | UK | 22:33:00 | 22:40:15 |
8 observations found in db: euraster
Available (probably) matching predictions (click on the link to switch):| JPL#137 : a8dfacc8-6b28-4166-aac9-ceac4b6b56b7 [db: observed] |
| JPL#137 : 679d0fb0-7262-4f27-aae6-5a1da52bab21 [db: observed] |
| JPL#137 : 670e8a6e-2eef-4112-af00-be60d0fbd070 [db: observed] |
| JPL#137 : 42383981-c565-4d1f-89b7-7a9bab6ac0a1 [db: observed] |
| JPL#137 : 73fc6600-e0d9-4c56-bd20-3bd16a2e7bfd [db: observed] |
| JPL#137 : f7d99573-73b7-4e8e-85d8-fbdc5acfafc8 [db: observed] |
Using prediction a8dfacc8-6b28-4166-aac9-ceac4b6b56b7 for map and profile fit
| Ellipse and circular profile fits to the timings (chords) |
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Auto-Fit Result: Size = 435 x 148 km a',b' = 217.5, 74.0 km X0,Y0 = -2512.4, 23.2 km Mean diameter = 254 km From 5 chords (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: 2021-02-18, 22:34 UT (JD = 2459264.440)
| DAMIT | Q | P (h) | λ, β | JD0 | JD-JD0 | φ0 | Version | Modified | Vol-equiv D | Cmnt |
|---|---|---|---|---|---|---|---|---|---|---|
| # 160 | None | 5.225 | 64°, -88° | 2.4449147568e6 | 14349.7 | 0.0° | size from AO is 185+/-20 km | 2013-07-23 | 191.0 +/- 14.0 km | 2011-03-28 |
| # 1856 | 4.0 | 5.225 | 64°, -90° | 2.4449147568e6 | 14349.7 | 0.0° | None | 2017-09-21 | 199.0 +/- 7.0 km | 2017-09-20 |
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] : a8dfacc8-6b28-4166-aac9-ceac4b6b56b7 [observed] Occultation Date + Time : 2021-02-18 at 22:30:46 UT +/- 0.28 min [1] Object Designation : (130) Elektra Orbit Class : MBA Star Designation : GDR3 3324504901302324096 Star Coordinates (ICRF) : RA = 06 25 39.5439, DE = +06 45 50.730 [2] Star Magnitudes : G = 11.93 mag, RP = 11.11 mag, BP = 12.63 mag Object Magnitude : V = 12.49 mag Estimated Magnitude Drop : 1.1 mag Estimated Max. Duration : 15.9 sec Object Mean Diameter : 182 km (src: astorb) Speed of the shadow : 11.5 km/s Elongation to Moon & Sun : 47° (sunlit = 42%), Sun = 124° Cross-track uncertainty : 1.7 mas = 2 km = 0.02 path-width (1-sig) RUWE and duplicate source : 1.1 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#137 [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) |