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Stellar Occultation by (1645) Waterfield on 2025-10-04 (23:08:11 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] : 819f5830-ddb8-11f0-547e-ecb776c70c81 [observed] Occultation Date + Time : 2025-10-04 at 23:08:11 UT +/- 0.01 min [1] Object Designation : (1645) Waterfield Star Designation : GDR3 3415802338212917376 Star Coordinates (ICRF) : RA = 05 10 50.7296, DE = +23 30 44.501 [2] Star Magnitudes : G = 14.81 mag, RP = 14.04 mag, BP = 15.44 mag Object Magnitude : V = 16.17 mag Estimated Magnitude Drop : 1.6 mag Estimated Max. Duration : 6.2 sec Speed of the shadow : 4.9 km/s Object Mean Diameter : 30.6 km (src: astorb) => apparent = 19 mas Apparent Motion : 0.1783 arcs/min @ PA = 86 deg Horizontal Parallax : 3.8770 arcs Dynamical Class : MBA Elongation to Moon & Sun : 97° (sunlit = 93%), Sun = 113° Cross-track uncertainty : 0.4 mas = 0 km = 0.02 path-width (1-sig) RUWE and duplicate source : 1.09 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#77 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0


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