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Stellar Occultation by (578) Happelia on 2024-09-20 (04:00:14 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] : 6b1da790-ddb5-11f0-547e-f3d0ffbd5d7e [observed] Occultation Date + Time : 2024-09-20 at 04:00:14 UT +/- 0.0 min [1] Object Designation : (578) Happelia Star Designation : GDR3 3430968761089527424 Star Coordinates (ICRF) : RA = 05 53 01.1203, DE = +27 35 48.295 [2] Star Magnitudes : G = 12.44 mag, RP = 11.99 mag, BP = 12.71 mag Object Magnitude : V = 15.32 mag Estimated Magnitude Drop : 3.0 mag Estimated Max. Duration : 4.8 sec Speed of the shadow : 14.5 km/s Object Mean Diameter : 69.3 km (src: astorb) => apparent = 32 mas Apparent Motion : 0.4050 arcs/min @ PA = 77 deg Horizontal Parallax : 2.9810 arcs Dynamical Class : MBA Elongation to Moon & Sun : 62° (sunlit = 94%), Sun = 89° Cross-track uncertainty : 0.3 mas = 0 km = 0.01 path-width (1-sig) RUWE and duplicate source : 0.92 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#149 Note : FP:true Object is a <Gaia mass determination> target ! [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0


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