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Stellar Occultation by (77659) 2001 LY5 on 2025-12-12 (19:23:34 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] : d6922bb0-ddb8-11f0-547e-fc2bdfff8029 [observed] Occultation Date + Time : 2025-12-12 at 19:23:34 UT +/- 0.01 min [1] Object Designation : (77659) 2001 LY5 Star Designation : GDR3 0190725929817571072 Star Coordinates (ICRF) : RA = 05 31 58.4887, DE = +39 07 39.824 [2] Star Magnitudes : G = 12.91 mag, RP = 12.42 mag, BP = 13.24 mag Object Magnitude : V = 18.4 mag Estimated Magnitude Drop : 5.5 mag Estimated Max. Duration : 0.4 sec Speed of the shadow : 12.8 km/s Object Mean Diameter : 4.7 km (src: astorb) => apparent = 3 mas Apparent Motion : 0.5667 arcs/min @ PA = 280 deg Horizontal Parallax : 4.7150 arcs Dynamical Class : MBA Elongation to Moon & Sun : 98° (sunlit = 41%), Sun = 164° Cross-track uncertainty : 1.0 mas = 1 km = 0.29 path-width (1-sig) RUWE and duplicate source : 0.91 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#52 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0


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