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Stellar Occultation by (259) Aletheia on 2024-12-27 (04:13:34 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] : d67423c0-ddb5-11f0-547e-3a27867f25b4 [observed] Occultation Date + Time : 2024-12-27 at 04:13:34 UT +/- 0.0 min [1] Object Designation : (259) Aletheia Star Designation : GDR3 6315734157340521344 Star Coordinates (ICRF) : RA = 15 16 57.0034, DE = -10 53 16.895 [2] Star Magnitudes : G = 14.89 mag, RP = 14.28 mag, BP = 15.31 mag Object Magnitude : V = 13.52 mag Estimated Magnitude Drop : 0.3 mag Estimated Max. Duration : 4.5 sec Speed of the shadow : 39.3 km/s Object Mean Diameter : 178.6 km (src: astorb) => apparent = 73 mas Apparent Motion : 0.9600 arcs/min @ PA = 105 deg Horizontal Parallax : 2.5970 arcs Dynamical Class : MBA Elongation to Moon & Sun : 11° (sunlit = 14%), Sun = 47° Cross-track uncertainty : 1.8 mas = 4 km = 0.02 path-width (1-sig) RUWE and duplicate source : 2.08 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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