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Stellar Occultation by (77823) 2001 QS184 on 2023-09-20 (18:12:52 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] : 0e485ac0-ddb4-11f0-547e-d27814fecf66 [observed] Occultation Date + Time : 2023-09-20 at 18:12:52 UT +/- 0.0 min [1] Object Designation : (77823) 2001 QS184 Star Designation : GDR3 4081138264667029504 Star Coordinates (ICRF) : RA = 19 10 03.8688, DE = -22 09 14.524 [2] Star Magnitudes : G = 12.95 mag, RP = 12.23 mag, BP = 13.51 mag Object Magnitude : V = 19.03 mag Estimated Magnitude Drop : 6.1 mag Estimated Max. Duration : 0.7 sec Speed of the shadow : 8.8 km/s Object Mean Diameter : 6.4 km (src: astorb) => apparent = 3 mas Apparent Motion : 0.2833 arcs/min @ PA = 38 deg Horizontal Parallax : 3.4270 arcs Dynamical Class : MBA Elongation to Moon & Sun : 44° (sunlit = 29%), Sun = 109° Cross-track uncertainty : 0.4 mas = 0 km = 0.12 path-width (1-sig) RUWE and duplicate source : 1.05 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#53 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0


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