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Stellar Occultation by (351) Yrsa on 2025-10-03 (03:23:42 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] : 7fb42a00-ddb8-11f0-547e-20d27f4f6524 [observed] Occultation Date + Time : 2025-10-03 at 03:23:42 UT +/- 0.02 min [1] Object Designation : (351) Yrsa Star Designation : GDR3 0001686723852064128 Star Coordinates (ICRF) : RA = 02 54 21.4872, DE = +03 27 08.954 [2] Star Magnitudes : G = 13.18 mag, RP = 12.57 mag, BP = 13.63 mag Object Magnitude : V = 13.48 mag Estimated Magnitude Drop : 0.9 mag Estimated Max. Duration : 5.1 sec Speed of the shadow : 7.8 km/s Object Mean Diameter : 39.6 km (src: astorb) => apparent = 29 mas Apparent Motion : 0.3433 arcs/min @ PA = 240 deg Horizontal Parallax : 4.6540 arcs Dynamical Class : MBA Elongation to Moon & Sun : 85° (sunlit = 80%), Sun = 146° Cross-track uncertainty : 2.0 mas = 2 km = 0.07 path-width (1-sig) RUWE and duplicate source : 0.96 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#80 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0


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