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Stellar Occultation by (264144) 2009 UJ91 on 2023-12-14 (20:24:00 UT)

CTU: Cross-track uncertainty (zero means: use the nominal prediction value, see event details below). Offsets and CTU all in mas.


Event Details
Occultation UUID [and db] : 4670ba50-ddb4-11f0-547e-4391ffe3f6cb [observed] Occultation Date + Time : 2023-12-14 at 20:24:00 UT +/- 0.08 min [1] Object Designation : (264144) 2009 UJ91 Star Designation : GDR3 3357451939025441024 Star Coordinates (ICRF) : RA = 06 44 24.1573, DE = +14 42 09.037 [2] Star Magnitudes : G = 11.61 mag, RP = 10.71 mag, BP = 12.45 mag Object Magnitude : V = 20.35 mag Estimated Magnitude Drop : 8.7 mag Estimated Max. Duration : 0.5 sec Speed of the shadow : 15.8 km/s Object Mean Diameter : 7.9 km (src: astorb) => apparent = 3 mas Apparent Motion : 0.3000 arcs/min @ PA = 273 deg Horizontal Parallax : 2.0220 arcs Dynamical Class : JTRO Elongation to Moon & Sun : 165° (sunlit = 4%), Sun = 160° Cross-track uncertainty : 21.7 mas = 68 km = 8.66 path-width (1-sig) RUWE and duplicate source : 1.12 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#31 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0


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