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Stellar Occultation by (40741) 1999 TD on 2023-04-01 (20:28:47 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] : 88f72c70-ddb3-11f0-547e-708597bd5815 [observed] Occultation Date + Time : 2023-04-01 at 20:28:47 UT +/- 0.01 min [1] Object Designation : (40741) 1999 TD Star Designation : GDR3 3109762553757760896 Star Coordinates (ICRF) : RA = 07 18 52.7030, DE = -02 02 03.340 [2] Star Magnitudes : G = 11.39 mag, RP = 10.9 mag, BP = 11.72 mag Object Magnitude : V = 18.33 mag Estimated Magnitude Drop : 6.9 mag Estimated Max. Duration : 0.4 sec Speed of the shadow : 18.3 km/s Object Mean Diameter : 6.7 km (src: astorb) => apparent = 4 mas Apparent Motion : 0.6967 arcs/min @ PA = 58 deg Horizontal Parallax : 4.0480 arcs Dynamical Class : MBA Elongation to Moon & Sun : 42° (sunlit = 83%), Sun = 99° Cross-track uncertainty : 0.7 mas = 1 km = 0.16 path-width (1-sig) RUWE and duplicate source : 1.0 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#48 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0


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