2022-01-14 / 4UC 606-024435 / (19521) Chaos
# | OBS | Observer | Occ | Meth. | Instr. | CC | TSRC | UT1 | UT2 | UT3 | UT4 | UT2E | UT3E | Dur. | Chrd |
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1 | show | Antoni Selva | O+ | VID | M400 | ES | GPS++ | 22:01:33 | 22:05:52.89 | 22:06:10.67 | 22:08:31 | 2.54 | 2.54 | 17.78 | 396.5 |
2 | show | Matthieu Conjat | O+ | CCD | M400 | FR | NTP | 21:45:40 | 22:05:33.05 | 22:05:40.05 | 22:10:10 | 1.14 | 1.14 | 7.00 | 156.1 |
2 observations found in db: euraster
Available (probably) matching predictions (click on the link to switch):JPL#16 : 8b4201d1-7489-49f4-95b9-4edb337fe60e [db: observed] |
Using prediction 8b4201d1-7489-49f4-95b9-4edb337fe60e for map and profile fit
Ellipse and circular profile fits to the timings (chords) |
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Auto-Fit Result: X0,Y0 = 1147.6, 1086.2 km Circular diameter = 416 km From 2 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. |
Map with groundtrack and observer stations |
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Event Details |
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Occultation UUID [and DB] : 8b4201d1-7489-49f4-95b9-4edb337fe60e [observed] Occultation Date + Time : 2022-01-14 at 22:06:53 UT +/- 2.6 min [1] Object Designation : (19521) Chaos Orbit Class : TNO Star Designation : GDR3 3444813016936374912 Star Coordinates (ICRF) : RA = 05 49 19.2750, DE = +31 07 02.443 [2] Star Magnitudes : G = 16.67 mag, RP = 15.98 mag, BP = 17.08 mag Object Magnitude : V = 20.84 mag Estimated Magnitude Drop : 4.2 mag Estimated Max. Duration : 18.2 sec Object Mean Diameter : 407 km (src: astorb) Speed of the shadow : 22.3 km/s Elongation to Moon & Sun : 9° (sunlit = 92%), Sun = 152° Cross-track uncertainty : 62.0 mas = 1813 km = 4.46 path-width (1-sig) RUWE and duplicate source : 1.01 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#16 Object is a "TNOs are cool" 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) |