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Stellar Occultation by (77495) 2001 HM37 on 2023-04-06 (00:03:33 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] : 83dcde60-ddb3-11f0-547e-d3703fd337d9 [observed] Occultation Date + Time : 2023-04-06 at 00:03:33 UT +/- 0.01 min [1] Object Designation : (77495) 2001 HM37 Star Designation : GDR3 3509897302071208064 Star Coordinates (ICRF) : RA = 12 52 34.4198, DE = -18 56 52.192 [2] Star Magnitudes : G = 12.26 mag, RP = 11.7 mag, BP = 12.65 mag Object Magnitude : V = 18.21 mag Estimated Magnitude Drop : 6.0 mag Estimated Max. Duration : 0.4 sec Speed of the shadow : 10.9 km/s Object Mean Diameter : 4.5 km (src: astorb) => apparent = 4 mas Apparent Motion : 0.5083 arcs/min @ PA = 300 deg Horizontal Parallax : 4.9660 arcs Dynamical Class : MBA Elongation to Moon & Sun : 15° (sunlit = 100%), Sun = 167° Cross-track uncertainty : 1.7 mas = 2 km = 0.49 path-width (1-sig) RUWE and duplicate source : 1.16 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#44 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0


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