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Stellar Occultation by (1613) Smiley on 2023-12-18 (00:40:54 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] : 491d63c0-ddb4-11f0-547e-eb567e3c07b7 [observed] Occultation Date + Time : 2023-12-18 at 00:40:54 UT +/- 0.01 min [1] Object Designation : (1613) Smiley Star Designation : GDR3 0684376345397677824 Star Coordinates (ICRF) : RA = 08 12 09.8922, DE = +28 48 15.122 [2] Star Magnitudes : G = 13.54 mag, RP = 13.12 mag, BP = 13.8 mag Object Magnitude : V = 14.43 mag Estimated Magnitude Drop : 1.3 mag Estimated Max. Duration : 5.9 sec Speed of the shadow : 3.6 km/s Object Mean Diameter : 21.2 km (src: astorb) => apparent = 25 mas Apparent Motion : 0.2583 arcs/min @ PA = 265 deg Horizontal Parallax : 7.6380 arcs Dynamical Class : MBA Elongation to Moon & Sun : 146° (sunlit = 30%), Sun = 146° Cross-track uncertainty : 0.7 mas = 0 km = 0.03 path-width (1-sig) RUWE and duplicate source : 0.95 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#63 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0


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