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Stellar Occultation by (482087) 2010 HP21 on 2025-08-13 (23:08:28 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] : 47729290-ddb7-11f0-547e-602ffffde5a9 [observed] Occultation Date + Time : 2025-08-13 at 23:08:28 UT +/- 0.22 min [1] Object Designation : (482087) 2010 HP21 Star Designation : GDR3 0434099461370778112 Star Coordinates (ICRF) : RA = 03 01 50.0674, DE = +45 58 38.281 [2] Star Magnitudes : G = 12.55 mag, RP = 12.0 mag, BP = 12.94 mag Object Magnitude : V = 21.56 mag Estimated Magnitude Drop : 9.0 mag Estimated Max. Duration : 0.4 sec Speed of the shadow : 17.6 km/s Object Mean Diameter : 6.4 km (src: astorb) => apparent = 2 mas Apparent Motion : 0.2750 arcs/min @ PA = 37 deg Horizontal Parallax : 1.6630 arcs Dynamical Class : JTRO Elongation to Moon & Sun : 42° (sunlit = 75%), Sun = 85° Cross-track uncertainty : 31.7 mas = 121 km = 19.00 path-width (1-sig) RUWE and duplicate source : 1.14 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#26 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0


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