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Stellar Occultation by (396744) 2003 SF87 on 2025-08-21 (22:05:47 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] : 4e305770-ddb7-11f0-547e-1d4a936fad26 [observed] Occultation Date + Time : 2025-08-21 at 22:05:47 UT +/- 0.87 min [1] Object Designation : (396744) 2003 SF87 Star Designation : GDR3 4203996353986368512 Star Coordinates (ICRF) : RA = 18 56 18.1427, DE = -08 01 27.235 [2] Star Magnitudes : G = 11.59 mag, RP = 10.59 mag, BP = 12.65 mag Object Magnitude : V = 19.81 mag Estimated Magnitude Drop : 8.2 mag Estimated Max. Duration : 0.3 sec Speed of the shadow : 8.9 km/s Object Mean Diameter : 2.4 km (src: astorb) => apparent = 2 mas Apparent Motion : 0.4283 arcs/min @ PA = 188 deg Horizontal Parallax : 5.1160 arcs Dynamical Class : MBA Elongation to Moon & Sun : 147° (sunlit = 2%), Sun = 133° Cross-track uncertainty : 22.3 mas = 27 km = 11.58 path-width (1-sig) RUWE and duplicate source : 0.83 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#26 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0


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