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Stellar Occultation by (121791) 2000 AS115 on 2023-07-20 (21:27:49 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] : d55d9590-ddb3-11f0-547e-4713f2def984 [observed] Occultation Date + Time : 2023-07-20 at 21:27:49 UT +/- 0.01 min [1] Object Designation : (121791) 2000 AS115 Star Designation : GDR3 6838635701094165248 Star Coordinates (ICRF) : RA = 21 45 51.2583, DE = -15 00 05.803 [2] Star Magnitudes : G = 12.07 mag, RP = 11.45 mag, BP = 12.52 mag Object Magnitude : V = 19.15 mag Estimated Magnitude Drop : 7.1 mag Estimated Max. Duration : 0.4 sec Speed of the shadow : 11.1 km/s Object Mean Diameter : 4.0 km (src: astorb) => apparent = 3 mas Apparent Motion : 0.4517 arcs/min @ PA = 224 deg Horizontal Parallax : 4.3310 arcs Dynamical Class : MBA Elongation to Moon & Sun : 171° (sunlit = 9%), Sun = 154° Cross-track uncertainty : 0.7 mas = 1 km = 0.26 path-width (1-sig) RUWE and duplicate source : 1.56 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#53 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0


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