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Stellar Occultation by (72824) 2001 HG4 on 2023-08-16 (02:00:43 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] : eda58ea0-ddb3-11f0-547e-6da5c7ef483a [observed] Occultation Date + Time : 2023-08-16 at 02:00:43 UT +/- 0.03 min [1] Object Designation : (72824) 2001 HG4 Star Designation : GDR3 4235222312353883520 Star Coordinates (ICRF) : RA = 19 55 55.2763, DE = -01 36 43.651 [2] Star Magnitudes : G = 9.97 mag, RP = 9.23 mag, BP = 10.24 mag Object Magnitude : V = 19.25 mag Estimated Magnitude Drop : 9.3 mag Estimated Max. Duration : 0.4 sec Speed of the shadow : 10.4 km/s Object Mean Diameter : 4.0 km (src: astorb) => apparent = 3 mas Apparent Motion : 0.4133 arcs/min @ PA = 244 deg Horizontal Parallax : 4.2090 arcs Dynamical Class : MBA Elongation to Moon & Sun : 150° (sunlit = 0%), Sun = 151° Cross-track uncertainty : 8.0 mas = 12 km = 3.03 path-width (1-sig) RUWE and duplicate source : 1.03 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#39 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0


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