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Stellar Occultation by (16831) 1997 WM21 on 2024-12-27 (03:31:35 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] : d5d2dab0-ddb5-11f0-547e-4ab8ffffbd21 [observed] Occultation Date + Time : 2024-12-27 at 03:31:35 UT +/- 0.01 min [1] Object Designation : (16831) 1997 WM21 Star Designation : GDR3 3357462693623535488 Star Coordinates (ICRF) : RA = 06 45 36.6064, DE = +14 55 17.708 [2] Star Magnitudes : G = 12.85 mag, RP = 12.32 mag, BP = 13.21 mag Object Magnitude : V = 15.92 mag Estimated Magnitude Drop : 3.1 mag Estimated Max. Duration : 0.7 sec Speed of the shadow : 7.9 km/s Object Mean Diameter : 5.3 km (src: astorb) => apparent = 7 mas Apparent Motion : 0.6633 arcs/min @ PA = 261 deg Horizontal Parallax : 8.8630 arcs Dynamical Class : MBA Elongation to Moon & Sun : 129° (sunlit = 14%), Sun = 170° Cross-track uncertainty : 0.7 mas = 0 km = 0.10 path-width (1-sig) RUWE and duplicate source : 1.01 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#56 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0


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