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Stellar Occultation by (40387) 1999 NL49 on 2024-07-22 (22:15:27 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] : 0c9ed400-ddb5-11f0-547e-d0aeca8e8c12 [observed] Occultation Date + Time : 2024-07-22 at 22:15:27 UT +/- 0.01 min [1] Object Designation : (40387) 1999 NL49 Star Designation : GDR3 4095777815316083200 Star Coordinates (ICRF) : RA = 18 09 56.6973, DE = -18 28 50.143 [2] Star Magnitudes : G = 14.18 mag, RP = 13.44 mag, BP = 14.78 mag Object Magnitude : V = 18.34 mag Estimated Magnitude Drop : 4.2 mag Estimated Max. Duration : 0.5 sec Speed of the shadow : 10.2 km/s Object Mean Diameter : 5.5 km (src: astorb) => apparent = 4 mas Apparent Motion : 0.4350 arcs/min @ PA = 279 deg Horizontal Parallax : 4.5400 arcs Dynamical Class : MBA Elongation to Moon & Sun : 49° (sunlit = 97%), Sun = 151° Cross-track uncertainty : 0.7 mas = 0 km = 0.18 path-width (1-sig) RUWE and duplicate source : 0.99 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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