2019-12-26 / 4UC 508-025991 / (798) Ruth
# | 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++ | 00:42:50 | 00:44:16.91 | 00:44:18.99 | 00:45:31 | 0.16 | 0.16 | 2.08 | 28.7 |
2 | show | Andrea Manna | O+ | VID | M200 | CH | GPS++ | 00:42:02 | 00:44:16.07 | 00:44:19.43 | 00:46:26 | 0.16 | 0.16 | 3.36 | 46.4 |
3 | show | Stefano Sposetti | O+ | VID | M280 | CH | GPS++ | 00:40:40 | 00:44:15.44 | 00:44:18.88 | 00:46:05 | 0.04 | 0.04 | 3.44 | 47.5 |
3 observations found in db: euraster
Available (probably) matching predictions (click on the link to switch):JPL#67 : 39db5b79-234d-4fe2-84c6-216cdb6c0983 [db: observed] |
JPL#67 : 155c5e5e-4ac9-468f-b69b-fe11f54473aa [db: observed] |
Using prediction 39db5b79-234d-4fe2-84c6-216cdb6c0983 for map and profile fit
Ellipse and circular profile fits to the timings (chords) |
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Auto-Fit Result: Size = 65 x 43 km a',b' = 32.5, 21.3 km X0,Y0 = 246.3, 28.6 km Mean diameter = 53 km From 3 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: 2019-12-26, 00:44 UT (JD = 2458843.531)
DAMIT | Q | P (h) | λ, β | JD0 | JD-JD0 | φ0 | Version | Modified | Vol-equiv D | Cmnt |
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# 1063 | 3.0 | 8.551 | 84°, 27° | 2.447533e6 | 11310.5 | 0.0° | None | 2017-04-03 | 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] : 39db5b79-234d-4fe2-84c6-216cdb6c0983 [observed] Occultation Date + Time : 2019-12-26 at 00:46:12 UT +/- 0.01 min [1] Object Designation : (798) Ruth Orbit Class : MBA Star Designation : GDR3 3331069677212060544 Star Coordinates (ICRF) : RA = 06 26 06.3975, DE = +11 27 50.469 [2] Star Magnitudes : G = 12.99 mag, RP = 12.48 mag, BP = 13.32 mag Object Magnitude : V = 14.29 mag Estimated Magnitude Drop : 1.6 mag Estimated Max. Duration : 3.1 sec Object Mean Diameter : 43 km (src: astorb) Speed of the shadow : 13.8 km/s Elongation to Moon & Sun : 168° (sunlit = 0%), Sun = 168° Cross-track uncertainty : 1.0 mas = 1 km = 0.04 path-width (1-sig) RUWE and duplicate source : 0.86 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#67 [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) |