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Stellar Occultation by (169109) 2001 OY24 on 2024-12-20 (22:33:40 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] : c3dbb3e0-ddb5-11f0-547e-8f065f3fa2df [observed] Occultation Date + Time : 2024-12-20 at 22:33:40 UT +/- 0.08 min [1] Object Designation : (169109) 2001 OY24 Star Designation : GDR3 0145370181816533632 Star Coordinates (ICRF) : RA = 04 23 11.1182, DE = +21 43 05.927 [2] Star Magnitudes : G = 13.06 mag, RP = 12.3 mag, BP = 13.67 mag Object Magnitude : V = 18.84 mag Estimated Magnitude Drop : 5.8 mag Estimated Max. Duration : 0.4 sec Speed of the shadow : 8.8 km/s Object Mean Diameter : 3.2 km (src: astorb) => apparent = 3 mas Apparent Motion : 0.4433 arcs/min @ PA = 240 deg Horizontal Parallax : 5.3620 arcs Dynamical Class : MBA Elongation to Moon & Sun : 90° (sunlit = 69%), Sun = 158° Cross-track uncertainty : 21.3 mas = 25 km = 7.92 path-width (1-sig) RUWE and duplicate source : 1.05 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#40 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0


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