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Stellar Occultation by (518763) 2009 UN159 on 2024-09-03 (19:55:56 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] : 51fd9e00-ddb5-11f0-547e-2d16fb7da931 [observed] Occultation Date + Time : 2024-09-03 at 19:55:56 UT +/- 0.31 min [1] Object Designation : (518763) 2009 UN159 Star Designation : GDR3 4299167606523886080 Star Coordinates (ICRF) : RA = 20 04 34.9798, DE = +09 01 52.852 [2] Star Magnitudes : G = 12.72 mag, RP = 11.97 mag, BP = 13.33 mag Object Magnitude : V = 21.0 mag Estimated Magnitude Drop : 8.3 mag Estimated Max. Duration : 0.2 sec Speed of the shadow : 8.5 km/s Object Mean Diameter : 1.80 km (src: astorb) => apparent = 1 mas Apparent Motion : 0.3517 arcs/min @ PA = 207 deg Horizontal Parallax : 4.4030 arcs Dynamical Class : MBA Elongation to Moon & Sun : 128° (sunlit = 1%), Sun = 135° Cross-track uncertainty : 43.7 mas = 63 km = 35.17 path-width (1-sig) RUWE and duplicate source : 1.11 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#23 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0


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