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Stellar Occultation by (84261) 2002 SD51 on 2025-10-19 (00:01:09 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] : 96a593c0-ddb8-11f0-547e-dfa1efeffe37 [observed] Occultation Date + Time : 2025-10-19 at 00:01:09 UT +/- 0.02 min [1] Object Designation : (84261) 2002 SD51 Star Designation : GDR3 0172482454930199936 Star Coordinates (ICRF) : RA = 04 25 46.5616, DE = +32 45 44.215 [2] Star Magnitudes : G = 13.61 mag, RP = 12.69 mag, BP = 14.5 mag Object Magnitude : V = 18.12 mag Estimated Magnitude Drop : 4.5 mag Estimated Max. Duration : 0.3 sec Speed of the shadow : 14.6 km/s Object Mean Diameter : 4.3 km (src: astorb) => apparent = 4 mas Apparent Motion : 0.8117 arcs/min @ PA = 334 deg Horizontal Parallax : 5.9070 arcs Dynamical Class : MBA Elongation to Moon & Sun : 108° (sunlit = 6%), Sun = 135° Cross-track uncertainty : 4.7 mas = 5 km = 1.18 path-width (1-sig) RUWE and duplicate source : 1.02 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#44 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0


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