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Stellar Occultation by (729085) 2011 AC87 on 2025-10-27 (18:00:29 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] : a3665900-ddb8-11f0-547e-5a8fd72f60ea [observed] Occultation Date + Time : 2025-10-27 at 18:00:29 UT +/- 0.25 min [1] Object Designation : (729085) 2011 AC87 Star Designation : GDR3 2663470337358499840 Star Coordinates (ICRF) : RA = 23 07 00.9772, DE = +05 38 33.592 [2] Star Magnitudes : G = 10.39 mag, RP = 9.87 mag, BP = 10.76 mag Object Magnitude : V = 21.85 mag Estimated Magnitude Drop : 11.5 mag Estimated Max. Duration : 0.3 sec Speed of the shadow : 5.2 km/s Object Mean Diameter : 1.50 km (src: astorb) => apparent = 1 mas Apparent Motion : 0.1817 arcs/min @ PA = 222 deg Horizontal Parallax : 3.7150 arcs Dynamical Class : Elongation to Moon & Sun : 69° (sunlit = 31%), Sun = 135° Cross-track uncertainty : 25.3 mas = 43 km = 28.96 path-width (1-sig) RUWE and duplicate source : 1.03 mas, dup.src = 1 (0:false, 1:true) Ephemeris Reference : JPL#13 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0


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