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Stellar Occultation by (1866) Sisyphus on 2023-04-19 (21:44:02 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] : 8d87ff30-ddb3-11f0-547e-08197ffeb1e2 [observed] Occultation Date + Time : 2023-04-19 at 21:44:02 UT +/- 0.0 min [1] Object Designation : (1866) Sisyphus Star Designation : GDR3 0857839903999648768 Star Coordinates (ICRF) : RA = 11 23 29.3921, DE = +59 35 24.037 [2] Star Magnitudes : G = 12.52 mag, RP = 11.85 mag, BP = 13.04 mag Object Magnitude : V = 17.65 mag Estimated Magnitude Drop : 5.1 mag Estimated Max. Duration : 0.6 sec Speed of the shadow : 18.9 km/s Object Mean Diameter : 11.0 km (src: astorb) => apparent = 6 mas Apparent Motion : 0.6483 arcs/min @ PA = 213 deg Horizontal Parallax : 3.6430 arcs Dynamical Class : NEO Elongation to Moon & Sun : 106° (sunlit = 0%), Sun = 103° Cross-track uncertainty : 0.3 mas = 0 km = 0.05 path-width (1-sig) RUWE and duplicate source : 0.96 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#1139 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0


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