2022-01-20 / 4UC 608-038238 / (331) Etheridgea
# | OBS | Observer | Occ | Meth. | Instr. | CC | TSRC | UT1 | UT2 | UT3 | UT4 | UT2E | UT3E | Dur. | Chrd |
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1 | show | Henk De Groot | O+ | VID | M356 | NL | GPS++ | 18:43:39 | 18:46:34.36 | 18:46:40.44 | 18:48:03 | 0.32 | 0.32 | 6.08 | 74.8 |
2 | show | Jan-Maarten Winkel | O+ | VID | M356 | NL | GPS++ | 18:46:14 | 18:46:32.04 | 18:46:39.24 | 18:48:14 | 0.32 | 0.48 | 7.20 | 88.6 |
2 observations found in db: euraster
Available (probably) matching predictions (click on the link to switch):JPL#64 : 16bf331d-a936-4d37-935a-3ed408069a11 [db: observed] |
Using prediction 16bf331d-a936-4d37-935a-3ed408069a11 for map and profile fit
Ellipse and circular profile fits to the timings (chords) |
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Auto-Fit Result: X0,Y0 = -96.2, -15.0 km Circular diameter = 117 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: 2022-01-20, 18:45 UT (JD = 2459600.281)
DAMIT | Q | P (h) | λ, β | JD0 | JD-JD0 | φ0 | Version | Modified | Vol-equiv D | Cmnt |
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# 5167 | 1.0 | 25.314 | 75°, 60° | 2.457249e6 | 2351.3 | 0.0° | None | 2020-10-05 | not scaled | 2019-10-23 |
# 5168 | 1.0 | 25.315 | 264°, 47° | 2.457249e6 | 2351.3 | 0.0° | None | 2020-10-05 | not scaled | 2019-10-23 |
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] : 16bf331d-a936-4d37-935a-3ed408069a11 [observed] Occultation Date + Time : 2022-01-20 at 18:41:59 UT +/- 0.02 min [1] Object Designation : (331) Etheridgea Orbit Class : MBA Star Designation : GDR3 0889095583605072768 Star Coordinates (ICRF) : RA = 07 00 11.8987, DE = +31 26 05.182 [2] Star Magnitudes : G = 14.07 mag, RP = 13.59 mag, BP = 14.38 mag Object Magnitude : V = 14.59 mag Estimated Magnitude Drop : 1.1 mag Estimated Max. Duration : 6.1 sec Object Mean Diameter : 75 km (src: astorb) Speed of the shadow : 12.3 km/s Elongation to Moon & Sun : 49° (sunlit = 93%), Sun = 160° Cross-track uncertainty : 1.0 mas = 1 km = 0.02 path-width (1-sig) RUWE and duplicate source : 0.97 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#64 [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) |