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Stellar Occultation by (55939) 1998 FD118 on 2022-12-30 (20:35:47 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] : 42588f70-ddb3-11f0-547e-562f41f93513 [observed] Occultation Date + Time : 2022-12-30 at 20:35:47 UT +/- 0.01 min [1] Object Designation : (55939) 1998 FD118 Star Designation : GDR3 3159227520302023808 Star Coordinates (ICRF) : RA = 06 54 01.3243, DE = +11 24 44.187 [2] Star Magnitudes : G = 9.38 mag, RP = 8.86 mag, BP = 9.68 mag Object Magnitude : V = 18.05 mag Estimated Magnitude Drop : 8.7 mag Estimated Max. Duration : 0.4 sec Speed of the shadow : 11.6 km/s Object Mean Diameter : 4.8 km (src: astorb) => apparent = 4 mas Apparent Motion : 0.5467 arcs/min @ PA = 265 deg Horizontal Parallax : 5.0050 arcs Dynamical Class : MBA Elongation to Moon & Sun : 84° (sunlit = 59%), Sun = 168° Cross-track uncertainty : 1.0 mas = 1 km = 0.27 path-width (1-sig) RUWE and duplicate source : 1.11 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#45 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0


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