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Stellar Occultation by (12582) 1999 RY34 on 2025-09-17 (20:35:54 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] : 74c40610-ddb8-11f0-547e-33d8f7bd7bb2 [observed] Occultation Date + Time : 2025-09-17 at 20:35:54 UT +/- 0.0 min [1] Object Designation : (12582) 1999 RY34 Star Designation : GDR3 4076891705935202304 Star Coordinates (ICRF) : RA = 18 27 59.9120, DE = -25 40 56.519 [2] Star Magnitudes : G = 9.62 mag, RP = 9.35 mag, BP = 9.76 mag Object Magnitude : V = 18.55 mag Estimated Magnitude Drop : 8.9 mag Estimated Max. Duration : 0.5 sec Speed of the shadow : 11.1 km/s Object Mean Diameter : 5.8 km (src: astorb) => apparent = 4 mas Apparent Motion : 0.4350 arcs/min @ PA = 85 deg Horizontal Parallax : 4.1840 arcs Dynamical Class : MBA Elongation to Moon & Sun : 148° (sunlit = 16%), Sun = 101° Cross-track uncertainty : 0.4 mas = 0 km = 0.11 path-width (1-sig) RUWE and duplicate source : 0.67 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#59 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0


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