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Stellar Occultation by (506419) 1999 TC269 on 2025-09-05 (21:21:10 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] : 718f0f40-ddb7-11f0-547e-9538d5efb2d8 [observed] Occultation Date + Time : 2025-09-05 at 21:21:10 UT +/- 0.07 min [1] Object Designation : (506419) 1999 TC269 Star Designation : GDR3 2685719814140119808 Star Coordinates (ICRF) : RA = 21 16 07.6454, DE = -01 57 48.339 [2] Star Magnitudes : G = 8.53 mag, RP = 7.32 mag, BP = 10.04 mag Object Magnitude : V = 19.41 mag Estimated Magnitude Drop : 10.9 mag Estimated Max. Duration : 0.2 sec Speed of the shadow : 7.1 km/s Object Mean Diameter : 1.60 km (src: astorb) => apparent = 2 mas Apparent Motion : 0.4917 arcs/min @ PA = 247 deg Horizontal Parallax : 7.3340 arcs Dynamical Class : MBA Elongation to Moon & Sun : 16° (sunlit = 96%), Sun = 154° Cross-track uncertainty : 27.3 mas = 23 km = 14.84 path-width (1-sig) RUWE and duplicate source : 1.16 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#30 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0


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