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Stellar Occultation by (139702) 2001 QN226 on 2023-10-18 (19:31:55 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] : 2baf35c0-ddb4-11f0-547e-bbb5fff7e210 [observed] Occultation Date + Time : 2023-10-18 at 19:31:55 UT +/- 0.02 min [1] Object Designation : (139702) 2001 QN226 Star Designation : GDR3 0232611069364399488 Star Coordinates (ICRF) : RA = 04 17 23.8012, DE = +44 28 53.283 [2] Star Magnitudes : G = 13.04 mag, RP = 12.51 mag, BP = 13.41 mag Object Magnitude : V = 19.57 mag Estimated Magnitude Drop : 6.5 mag Estimated Max. Duration : 0.5 sec Speed of the shadow : 8.0 km/s Object Mean Diameter : 3.7 km (src: astorb) => apparent = 2 mas Apparent Motion : 0.3150 arcs/min @ PA = 319 deg Horizontal Parallax : 4.2130 arcs Dynamical Class : MBA Elongation to Moon & Sun : 161° (sunlit = 17%), Sun = 130° Cross-track uncertainty : 1.0 mas = 1 km = 0.41 path-width (1-sig) RUWE and duplicate source : 1.45 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#34 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0


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