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Stellar Occultation by (42712) 1998 QX28 on 2025-09-12 (21:14:45 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] : 6b27a7c0-ddb7-11f0-547e-a88e38e67b7b [observed] Occultation Date + Time : 2025-09-12 at 21:14:45 UT +/- 0.06 min [1] Object Designation : (42712) 1998 QX28 Star Designation : GDR3 4253982076755635712 Star Coordinates (ICRF) : RA = 18 55 40.6565, DE = -05 56 29.116 [2] Star Magnitudes : G = 13.3 mag, RP = 12.0 mag, BP = 15.26 mag Object Magnitude : V = 20.05 mag Estimated Magnitude Drop : 6.7 mag Estimated Max. Duration : 0.5 sec Speed of the shadow : 9.5 km/s Object Mean Diameter : 4.3 km (src: astorb) => apparent = 2 mas Apparent Motion : 0.2967 arcs/min @ PA = 159 deg Horizontal Parallax : 3.3290 arcs Dynamical Class : MBA Elongation to Moon & Sun : 131° (sunlit = 68%), Sun = 113° Cross-track uncertainty : 0.4 mas = 0 km = 0.18 path-width (1-sig) RUWE and duplicate source : 1.22 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#36 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0


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