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Stellar Occultation by (66039) 1998 QS74 on 2023-12-04 (05:25:45 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] : 4224dfd0-ddb4-11f0-547e-e2c4eff3a106 [observed] Occultation Date + Time : 2023-12-04 at 05:25:45 UT +/- 0.0 min [1] Object Designation : (66039) 1998 QS74 Star Designation : GDR3 0236706337861821184 Star Coordinates (ICRF) : RA = 03 36 08.9718, DE = +40 36 58.864 [2] Star Magnitudes : G = 10.92 mag, RP = 10.43 mag, BP = 11.23 mag Object Magnitude : V = 18.27 mag Estimated Magnitude Drop : 7.4 mag Estimated Max. Duration : 0.4 sec Speed of the shadow : 13.1 km/s Object Mean Diameter : 5.5 km (src: astorb) => apparent = 4 mas Apparent Motion : 0.5567 arcs/min @ PA = 236 deg Horizontal Parallax : 4.5040 arcs Dynamical Class : MBA Elongation to Moon & Sun : 88° (sunlit = 60%), Sun = 157° Cross-track uncertainty : 0.5 mas = 0 km = 0.13 path-width (1-sig) RUWE and duplicate source : 3.22 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#48 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0


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