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Stellar Occultation by (34521) 2000 SA191 on 2025-10-18 (21:04:12 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] : 96c502a0-ddb8-11f0-547e-5593efffdc33 [observed] Occultation Date + Time : 2025-10-18 at 21:04:12 UT +/- 0.04 min [1] Object Designation : (34521) 2000 SA191 Star Designation : GDR3 0221890968429654400 Star Coordinates (ICRF) : RA = 03 26 21.7097, DE = +34 51 46.662 [2] Star Magnitudes : G = 12.79 mag, RP = 12.11 mag, BP = 13.31 mag Object Magnitude : V = 18.77 mag Estimated Magnitude Drop : 6.0 mag Estimated Max. Duration : 1.2 sec Speed of the shadow : 14.2 km/s Object Mean Diameter : 16.3 km (src: astorb) => apparent = 5 mas Apparent Motion : 0.2783 arcs/min @ PA = 283 deg Horizontal Parallax : 2.0810 arcs Dynamical Class : JTRO Elongation to Moon & Sun : 117° (sunlit = 6%), Sun = 145° Cross-track uncertainty : 4.7 mas = 14 km = 0.88 path-width (1-sig) RUWE and duplicate source : 1.09 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#50 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0


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