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Stellar Occultation by (169174) 2001 QC234 on 2023-09-28 (22:43:45 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] : 1476d7f0-ddb4-11f0-547e-76b5afbbc8f6 [observed] Occultation Date + Time : 2023-09-28 at 22:43:45 UT +/- 0.09 min [1] Object Designation : (169174) 2001 QC234 Star Designation : GDR3 0090429131963458688 Star Coordinates (ICRF) : RA = 01 47 58.8608, DE = +15 33 37.365 [2] Star Magnitudes : G = 11.13 mag, RP = 10.43 mag, BP = 11.69 mag Object Magnitude : V = 19.08 mag Estimated Magnitude Drop : 8.0 mag Estimated Max. Duration : 0.4 sec Speed of the shadow : 7.7 km/s Object Mean Diameter : 2.9 km (src: astorb) => apparent = 2 mas Apparent Motion : 0.3950 arcs/min @ PA = 265 deg Horizontal Parallax : 5.4480 arcs Dynamical Class : MBA Elongation to Moon & Sun : 32° (sunlit = 100%), Sun = 155° Cross-track uncertainty : 26.0 mas = 30 km = 10.50 path-width (1-sig) RUWE and duplicate source : 0.92 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#24 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0


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