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Stellar Occultation by (35891) 1999 JS81 on 2023-09-25 (23:46:34 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] : 19727a70-ddb4-11f0-547e-9faad47f3c33 [observed] Occultation Date + Time : 2023-09-25 at 23:46:34 UT +/- 0.0 min [1] Object Designation : (35891) 1999 JS81 Star Designation : GDR3 3288325372405614208 Star Coordinates (ICRF) : RA = 04 58 39.3243, DE = +06 59 50.483 [2] Star Magnitudes : G = 7.89 mag, RP = 6.68 mag, BP = 9.38 mag Object Magnitude : V = 17.98 mag Estimated Magnitude Drop : 10.1 mag Estimated Max. Duration : 0.5 sec Speed of the shadow : 10.1 km/s Object Mean Diameter : 4.6 km (src: astorb) => apparent = 4 mas Apparent Motion : 0.5667 arcs/min @ PA = 112 deg Horizontal Parallax : 5.9930 arcs Dynamical Class : MBA Elongation to Moon & Sun : 117° (sunlit = 84%), Sun = 108° Cross-track uncertainty : 0.3 mas = 0 km = 0.07 path-width (1-sig) RUWE and duplicate source : 1.02 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#55 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0


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