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Stellar Occultation by (31659) 1999 HT10 on 2023-08-20 (19:59:20 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] : f56421b0-ddb3-11f0-547e-a7e7eb9e6715 [observed] Occultation Date + Time : 2023-08-20 at 19:59:20 UT +/- 0.0 min [1] Object Designation : (31659) 1999 HT10 Star Designation : GDR3 6752613484749555072 Star Coordinates (ICRF) : RA = 19 41 37.3716, DE = -29 31 31.479 [2] Star Magnitudes : G = 10.61 mag, RP = 9.86 mag, BP = 11.23 mag Object Magnitude : V = 19.07 mag Estimated Magnitude Drop : 8.5 mag Estimated Max. Duration : 0.7 sec Speed of the shadow : 8.6 km/s Object Mean Diameter : 6.1 km (src: astorb) => apparent = 3 mas Apparent Motion : 0.2817 arcs/min @ PA = 275 deg Horizontal Parallax : 3.4650 arcs Dynamical Class : MBA Elongation to Moon & Sun : 96° (sunlit = 17%), Sun = 144° Cross-track uncertainty : 0.3 mas = 0 km = 0.09 path-width (1-sig) RUWE and duplicate source : 1.08 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#52 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0


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