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Stellar Occultation by (40709) 1999 RW242 on 2024-08-10 (23:01:56 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] : 372758f0-ddb5-11f0-547e-2141ff5642a1 [observed] Occultation Date + Time : 2024-08-10 at 23:01:56 UT +/- 0.02 min [1] Object Designation : (40709) 1999 RW242 Star Designation : GDR3 4161934566664642176 Star Coordinates (ICRF) : RA = 17 45 00.1446, DE = -12 41 50.249 [2] Star Magnitudes : G = 12.18 mag, RP = 11.29 mag, BP = 13.0 mag Object Magnitude : V = 19.11 mag Estimated Magnitude Drop : 6.9 mag Estimated Max. Duration : 0.7 sec Speed of the shadow : 7.4 km/s Object Mean Diameter : 5.2 km (src: astorb) => apparent = 3 mas Apparent Motion : 0.2717 arcs/min @ PA = 204 deg Horizontal Parallax : 3.8860 arcs Dynamical Class : MBA Elongation to Moon & Sun : 57° (sunlit = 34%), Sun = 127° Cross-track uncertainty : 0.4 mas = 0 km = 0.13 path-width (1-sig) RUWE and duplicate source : 3.41 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#55 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0


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