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Stellar Occultation by (19644) 1999 RD102 on 2025-09-14 (21:29:20 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] : 6e5bd0b0-ddb7-11f0-547e-63b6c7e6ca60 [observed] Occultation Date + Time : 2025-09-14 at 21:29:20 UT +/- 0.03 min [1] Object Designation : (19644) 1999 RD102 Star Designation : GDR3 4194950740477298560 Star Coordinates (ICRF) : RA = 19 37 12.4304, DE = -08 03 24.579 [2] Star Magnitudes : G = 8.16 mag, RP = 7.35 mag, BP = 8.86 mag Object Magnitude : V = 17.45 mag Estimated Magnitude Drop : 9.3 mag Estimated Max. Duration : 2.3 sec Speed of the shadow : 4.1 km/s Object Mean Diameter : 9.3 km (src: astorb) => apparent = 6 mas Apparent Motion : 0.1667 arcs/min @ PA = 128 deg Horizontal Parallax : 4.3570 arcs Dynamical Class : MBA Elongation to Moon & Sun : 148° (sunlit = 45%), Sun = 121° Cross-track uncertainty : 1.3 mas = 1 km = 0.20 path-width (1-sig) RUWE and duplicate source : 1.09 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#70 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0


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