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Stellar Occultation by (4571) Grumiaux on 2023-04-18 (00:04:43 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] : 8d3b17b0-ddb3-11f0-547e-7cacbdfd5703 [observed] Occultation Date + Time : 2023-04-18 at 00:04:43 UT +/- 0.0 min [1] Object Designation : (4571) Grumiaux Star Designation : GDR3 6306998395722536192 Star Coordinates (ICRF) : RA = 15 01 51.0523, DE = -15 22 57.408 [2] Star Magnitudes : G = 11.56 mag, RP = 11.09 mag, BP = 11.86 mag Object Magnitude : V = 17.5 mag Estimated Magnitude Drop : 5.9 mag Estimated Max. Duration : 0.9 sec Speed of the shadow : 12.0 km/s Object Mean Diameter : 10.9 km (src: astorb) => apparent = 6 mas Apparent Motion : 0.4133 arcs/min @ PA = 289 deg Horizontal Parallax : 3.6470 arcs Dynamical Class : MBA Elongation to Moon & Sun : 132° (sunlit = 6%), Sun = 160° Cross-track uncertainty : 0.3 mas = 0 km = 0.05 path-width (1-sig) RUWE and duplicate source : 1.03 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#70 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0


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