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Stellar Occultation by (5222) Ioffe on 2025-08-21 (20:27:38 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] : 4e632740-ddb7-11f0-547e-c384fff527db [observed] Occultation Date + Time : 2025-08-21 at 20:27:38 UT +/- 0.0 min [1] Object Designation : (5222) Ioffe Star Designation : GDR3 1861601248887159936 Star Coordinates (ICRF) : RA = 20 21 39.9144, DE = +30 51 31.501 [2] Star Magnitudes : G = 12.53 mag, RP = 12.02 mag, BP = 12.87 mag Object Magnitude : V = 16.52 mag Estimated Magnitude Drop : 4.0 mag Estimated Max. Duration : 1.6 sec Speed of the shadow : 13.7 km/s Object Mean Diameter : 22.0 km (src: astorb) => apparent = 14 mas Apparent Motion : 0.5083 arcs/min @ PA = 225 deg Horizontal Parallax : 3.9470 arcs Dynamical Class : MBA Elongation to Moon & Sun : 128° (sunlit = 2%), Sun = 131° Cross-track uncertainty : 0.7 mas = 1 km = 0.05 path-width (1-sig) RUWE and duplicate source : 0.86 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#70 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0


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