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Stellar Occultation by (77522) 2001 HA54 on 2023-05-26 (22:41:52 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] : 9d9f4270-ddb3-11f0-547e-3e6bd71e5ede [observed] Occultation Date + Time : 2023-05-26 at 22:41:52 UT +/- 0.01 min [1] Object Designation : (77522) 2001 HA54 Star Designation : GDR3 1748025713511430656 Star Coordinates (ICRF) : RA = 20 44 16.0244, DE = +06 40 42.958 [2] Star Magnitudes : G = 12.29 mag, RP = 11.7 mag, BP = 12.72 mag Object Magnitude : V = 19.96 mag Estimated Magnitude Drop : 7.7 mag Estimated Max. Duration : 0.5 sec Speed of the shadow : 7.8 km/s Object Mean Diameter : 4.1 km (src: astorb) => apparent = 2 mas Apparent Motion : 0.2567 arcs/min @ PA = 29 deg Horizontal Parallax : 3.4840 arcs Dynamical Class : MBA Elongation to Moon & Sun : 149° (sunlit = 43%), Sun = 108° Cross-track uncertainty : 0.3 mas = 0 km = 0.13 path-width (1-sig) RUWE and duplicate source : 0.92 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#43 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0


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