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Stellar Occultation by (375) Ursula on 2025-11-19 (19:40:44 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] : bb5d4be0-ddb8-11f0-547e-479429fdc183 [observed] Occultation Date + Time : 2025-11-19 at 19:40:44 UT +/- 0.01 min [1] Object Designation : (375) Ursula Star Designation : GDR3 6855739261595865472 Star Coordinates (ICRF) : RA = 20 32 25.9447, DE = -22 12 13.399 [2] Star Magnitudes : G = 11.74 mag, RP = 11.23 mag, BP = 12.08 mag Object Magnitude : V = 12.96 mag Estimated Magnitude Drop : 1.5 mag Estimated Max. Duration : 3.7 sec Speed of the shadow : 29.7 km/s Object Mean Diameter : 109.5 km (src: astorb) => apparent = 50 mas Apparent Motion : 0.8083 arcs/min @ PA = 64 deg Horizontal Parallax : 2.9000 arcs Dynamical Class : MBA Elongation to Moon & Sun : 72° (sunlit = 0%), Sun = 67° Cross-track uncertainty : 2.3 mas = 5 km = 0.05 path-width (1-sig) RUWE and duplicate source : 0.97 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#107 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0


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