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Stellar Occultation by (437296) 2013 BK40 on 2023-12-23 (23:11:28 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] : 4c9859b0-ddb4-11f0-547e-646b76af29c0 [observed] Occultation Date + Time : 2023-12-23 at 23:11:28 UT +/- 0.08 min [1] Object Designation : (437296) 2013 BK40 Star Designation : GDR3 3354786486620386944 Star Coordinates (ICRF) : RA = 06 59 15.6992, DE = +15 27 59.470 [2] Star Magnitudes : G = 11.19 mag, RP = 10.51 mag, BP = 11.72 mag Object Magnitude : V = 20.74 mag Estimated Magnitude Drop : 9.6 mag Estimated Max. Duration : 0.3 sec Speed of the shadow : 15.8 km/s Object Mean Diameter : 5.3 km (src: astorb) => apparent = 2 mas Apparent Motion : 0.3350 arcs/min @ PA = 280 deg Horizontal Parallax : 2.2490 arcs Dynamical Class : JTRO Elongation to Moon & Sun : 50° (sunlit = 90%), Sun = 166° Cross-track uncertainty : 25.7 mas = 72 km = 13.75 path-width (1-sig) RUWE and duplicate source : 0.84 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#34 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0


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