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Stellar Occultation by (2212) Hephaistos on 2025-09-30 (04:29:39 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] : 79c4d8b0-ddb8-11f0-547e-8002fddf38c9 [observed] Occultation Date + Time : 2025-09-30 at 04:29:39 UT +/- 0.0 min [1] Object Designation : (2212) Hephaistos Star Designation : GDR3 0937601741654728192 Star Coordinates (ICRF) : RA = 06 47 41.1720, DE = +32 23 54.502 [2] Star Magnitudes : G = 14.47 mag, RP = 13.98 mag, BP = 14.79 mag Object Magnitude : V = 18.95 mag Estimated Magnitude Drop : 4.5 mag Estimated Max. Duration : 0.5 sec Speed of the shadow : 14.3 km/s Object Mean Diameter : 6.9 km (src: astorb) => apparent = 3 mas Apparent Motion : 0.4350 arcs/min @ PA = 73 deg Horizontal Parallax : 3.2300 arcs Dynamical Class : NEO Elongation to Moon & Sun : 175° (sunlit = 52%), Sun = 87° Cross-track uncertainty : 0.2 mas = 0 km = 0.06 path-width (1-sig) RUWE and duplicate source : 1.11 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#741 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0


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