2021-12-28 / 4UC 602-017692 / (162) Laurentia
# | OBS | Observer | Occ | Meth. | Instr. | CC | TSRC | UT1 | UT2 | UT3 | UT4 | UT2E | UT3E | Dur. | Chrd |
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1 | show | Alberto Ossola | O+ | VID | M230 | CH | GPS++ | 19:30:16 | 19:32:11.17 | 19:32:20.45 | 19:33:54 | 0.40 | 0.40 | 9.28 | 98.4 |
2 | show | Andrea Manna | O+ | VID | M200 | CH | GPS++ | 19:30:35 | 19:32:10.71 | 19:32:15.27 | 19:34:09 | 0.48 | 0.24 | 4.56 | 48.3 |
3 | show | Stefano Sposetti | O+ | CCD | M420 | CH | GPS++ | 19:29:20 | 19:32:11.09 | 19:32:14.87 | 19:35:20 | 0.20 | 0.20 | 3.78 | 40.1 |
3 observations found in db: euraster
Available (probably) matching predictions (click on the link to switch):JPL#71 : a92e1e9e-86f7-4754-bf10-b6cd0d2e26a3 [db: observed] |
JPL#71 : 41640442-6c68-4893-8498-ec8b739edafc [db: observed] |
JPL#71 : 69fd8e54-d5aa-4022-93ad-c4059d8888c9 [db: observed] |
Using prediction a92e1e9e-86f7-4754-bf10-b6cd0d2e26a3 for map and profile fit
Ellipse and circular profile fits to the timings (chords) |
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Auto-Fit Result: Ellipse profile fit was not successful. Trying circular fit. Circular diameter = 155 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. |
Sky projection (artificial light) for occ. time: 2021-12-28, 19:32 UT (JD = 2459577.314)
DAMIT | Q | P (h) | λ, β | JD0 | JD-JD0 | φ0 | Version | Modified | Vol-equiv D | Cmnt |
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# 325 | None | 11.869 | 139°, 64° | 2.440625e6 | 18952.3 | 0.0° | None | 2011-05-02 | not scaled | 2011-04-21 |
# 326 | None | 11.869 | 313°, 51° | 2.440625e6 | 18952.3 | 0.0° | None | 2011-05-02 | not scaled | 2011-04-21 |
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] : a92e1e9e-86f7-4754-bf10-b6cd0d2e26a3 [observed] Occultation Date + Time : 2021-12-28 at 19:28:01 UT +/- 0.01 min [1] Object Designation : (162) Laurentia Orbit Class : MBA Star Designation : GDR3 0156181439135255424 Star Coordinates (ICRF) : RA = 05 10 49.2220, DE = +30 12 25.688 [2] Star Magnitudes : G = 14.38 mag, RP = 13.91 mag, BP = 14.66 mag Object Magnitude : V = 13.06 mag Estimated Magnitude Drop : 0.3 mag Estimated Max. Duration : 9.4 sec Object Mean Diameter : 99 km (src: astorb) Speed of the shadow : 10.6 km/s Elongation to Moon & Sun : 129° (sunlit = 32%), Sun = 161° 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#71 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) |