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Stellar Occultation by (255179) 2005 UD242 on 2025-10-01 (21:56:28 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] : 7b817cd0-ddb8-11f0-547e-adf86e7fbe6f [observed] Occultation Date + Time : 2025-10-01 at 21:56:28 UT +/- 0.14 min [1] Object Designation : (255179) 2005 UD242 Star Designation : GDR3 2666879819836798464 Star Coordinates (ICRF) : RA = 21 55 20.4993, DE = -07 16 42.560 [2] Star Magnitudes : G = 13.12 mag, RP = 12.43 mag, BP = 13.68 mag Object Magnitude : V = 20.83 mag Estimated Magnitude Drop : 7.7 mag Estimated Max. Duration : 0.4 sec Speed of the shadow : 5.7 km/s Object Mean Diameter : 2.1 km (src: astorb) => apparent = 1 mas Apparent Motion : 0.2217 arcs/min @ PA = 245 deg Horizontal Parallax : 4.1270 arcs Dynamical Class : MBA Elongation to Moon & Sun : 29° (sunlit = 69%), Sun = 139° Cross-track uncertainty : 22.3 mas = 34 km = 16.41 path-width (1-sig) RUWE and duplicate source : 0.93 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#24 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0


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