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Stellar Occultation by (242497) 2004 XL20 on 2025-11-10 (22:14:13 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] : b27e7bc0-ddb8-11f0-547e-dd977affbe0f [observed] Occultation Date + Time : 2025-11-10 at 22:14:13 UT +/- 0.13 min [1] Object Designation : (242497) 2004 XL20 Star Designation : GDR3 3403633561993433600 Star Coordinates (ICRF) : RA = 05 33 51.5524, DE = +21 12 47.988 [2] Star Magnitudes : G = 9.45 mag, RP = 8.53 mag, BP = 10.34 mag Object Magnitude : V = 20.18 mag Estimated Magnitude Drop : 10.7 mag Estimated Max. Duration : 0.3 sec Speed of the shadow : 7.9 km/s Object Mean Diameter : 2.6 km (src: astorb) => apparent = 2 mas Apparent Motion : 0.3183 arcs/min @ PA = 288 deg Horizontal Parallax : 4.2830 arcs Dynamical Class : MBA Elongation to Moon & Sun : 39° (sunlit = 64%), Sun = 145° Cross-track uncertainty : 23.3 mas = 34 km = 13.35 path-width (1-sig) RUWE and duplicate source : 1.2 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#34 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0


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