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Stellar Occultation by (102930) 1999 XO40 on 2025-10-14 (20:51:20 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] : 912ea6c0-ddb8-11f0-547e-9e90673bedc7 [observed] Occultation Date + Time : 2025-10-14 at 20:51:20 UT +/- 0.05 min [1] Object Designation : (102930) 1999 XO40 Star Designation : GDR3 2445805685468825088 Star Coordinates (ICRF) : RA = 23 47 02.1292, DE = -05 45 14.188 [2] Star Magnitudes : G = 11.39 mag, RP = 10.91 mag, BP = 11.71 mag Object Magnitude : V = 18.34 mag Estimated Magnitude Drop : 7.0 mag Estimated Max. Duration : 0.5 sec Speed of the shadow : 4.2 km/s Object Mean Diameter : 2.0 km (src: astorb) => apparent = 3 mas Apparent Motion : 0.3533 arcs/min @ PA = 273 deg Horizontal Parallax : 8.8970 arcs Dynamical Class : MBA Elongation to Moon & Sun : 131° (sunlit = 38%), Sun = 153° Cross-track uncertainty : 9.3 mas = 6 km = 3.33 path-width (1-sig) RUWE and duplicate source : 0.91 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#40 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0


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