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Stellar Occultation by (11440) Massironi on 2025-09-23 (21:41:59 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] : b44c8500-ddb8-11f0-547e-d4268fba82a9 [observed] Occultation Date + Time : 2025-09-23 at 21:41:59 UT +/- 0.0 min [1] Object Designation : (11440) Massironi Star Designation : GDR3 2643535160755905920 Star Coordinates (ICRF) : RA = 23 50 04.1482, DE = +01 52 16.087 [2] Star Magnitudes : G = 13.31 mag, RP = 12.88 mag, BP = 13.58 mag Object Magnitude : V = 17.45 mag Estimated Magnitude Drop : 4.2 mag Estimated Max. Duration : 0.7 sec Speed of the shadow : 13.9 km/s Object Mean Diameter : 9.5 km (src: astorb) => apparent = 6 mas Apparent Motion : 0.4850 arcs/min @ PA = 235 deg Horizontal Parallax : 3.7200 arcs Dynamical Class : MBA Elongation to Moon & Sun : 154° (sunlit = 4%), Sun = 176° Cross-track uncertainty : 0.3 mas = 0 km = 0.05 path-width (1-sig) RUWE and duplicate source : 1.0 mas, dup.src = 1 (0:false, 1:true) Ephemeris Reference : JPL#70 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0


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