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Stellar Occultation by (351) Yrsa on 2023-05-28 (23:26:59 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] : 9f52bed0-ddb3-11f0-547e-7989e373bdce [observed] Occultation Date + Time : 2023-05-28 at 23:26:59 UT +/- 0.0 min [1] Object Designation : (351) Yrsa Star Designation : GDR3 4345985395743621120 Star Coordinates (ICRF) : RA = 15 57 31.3634, DE = -11 43 00.963 [2] Star Magnitudes : G = 14.57 mag, RP = 13.95 mag, BP = 15.02 mag Object Magnitude : V = 13.16 mag Estimated Magnitude Drop : 0.3 mag Estimated Max. Duration : 3.2 sec Speed of the shadow : 12.4 km/s Object Mean Diameter : 39.6 km (src: astorb) => apparent = 29 mas Apparent Motion : 0.5517 arcs/min @ PA = 269 deg Horizontal Parallax : 4.7340 arcs Dynamical Class : MBA Elongation to Moon & Sun : 67° (sunlit = 63%), Sun = 169° Cross-track uncertainty : 1.0 mas = 1 km = 0.03 path-width (1-sig) RUWE and duplicate source : 1.1 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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