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Stellar Occultation by (169255) 2001 SP129 on 2023-09-05 (21:18:00 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] : fecae680-ddb3-11f0-547e-e7e6fad91412 [observed] Occultation Date + Time : 2023-09-05 at 21:18:00 UT +/- 0.11 min [1] Object Designation : (169255) 2001 SP129 Star Designation : GDR3 6912149121542406400 Star Coordinates (ICRF) : RA = 21 08 36.4924, DE = -04 39 42.971 [2] Star Magnitudes : G = 12.41 mag, RP = 11.73 mag, BP = 12.93 mag Object Magnitude : V = 18.9 mag Estimated Magnitude Drop : 6.5 mag Estimated Max. Duration : 0.4 sec Speed of the shadow : 7.6 km/s Object Mean Diameter : 3.1 km (src: astorb) => apparent = 3 mas Apparent Motion : 0.3983 arcs/min @ PA = 220 deg Horizontal Parallax : 5.5590 arcs Dynamical Class : MBA Elongation to Moon & Sun : 102° (sunlit = 61%), Sun = 153° Cross-track uncertainty : 20.7 mas = 23 km = 7.66 path-width (1-sig) RUWE and duplicate source : 0.97 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#33 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0


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