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Stellar Occultation by (129808) 1999 KF18 on 2025-09-07 (21:45:37 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] : 708fa0a0-ddb7-11f0-547e-3340fe172319 [observed] Occultation Date + Time : 2025-09-07 at 21:45:37 UT +/- 0.3 min [1] Object Designation : (129808) 1999 KF18 Star Designation : GDR3 6906719694470121472 Star Coordinates (ICRF) : RA = 20 37 40.9385, DE = -07 58 25.932 [2] Star Magnitudes : G = 12.34 mag, RP = 11.65 mag, BP = 12.87 mag Object Magnitude : V = 18.43 mag Estimated Magnitude Drop : 6.1 mag Estimated Max. Duration : 0.3 sec Speed of the shadow : 6.6 km/s Object Mean Diameter : 2.1 km (src: astorb) => apparent = 3 mas Apparent Motion : 0.5533 arcs/min @ PA = 172 deg Horizontal Parallax : 8.9120 arcs Dynamical Class : MBA Elongation to Moon & Sun : 39° (sunlit = 100%), Sun = 143° Cross-track uncertainty : 17.7 mas = 12 km = 6.03 path-width (1-sig) RUWE and duplicate source : 1.21 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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