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Stellar Occultation by (51916) 2001 QQ73 on 2025-09-05 (20:10:03 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] : 67802390-ddb7-11f0-547e-0895dbf594ac [observed] Occultation Date + Time : 2025-09-05 at 20:10:03 UT +/- 0.41 min [1] Object Designation : (51916) 2001 QQ73 Star Designation : GDR3 4081664411038758784 Star Coordinates (ICRF) : RA = 19 04 26.1443, DE = -21 34 47.424 [2] Star Magnitudes : G = 12.47 mag, RP = 11.08 mag, BP = 14.67 mag Object Magnitude : V = 20.39 mag Estimated Magnitude Drop : 7.9 mag Estimated Max. Duration : 2.1 sec Speed of the shadow : 1.9 km/s Object Mean Diameter : 4.0 km (src: astorb) => apparent = 2 mas Apparent Motion : 0.0567 arcs/min @ PA = 303 deg Horizontal Parallax : 3.1440 arcs Dynamical Class : MBA Elongation to Moon & Sun : 34° (sunlit = 95%), Sun = 121° Cross-track uncertainty : 17.3 mas = 35 km = 8.77 path-width (1-sig) RUWE and duplicate source : 1.2 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#39 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0


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