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Stellar Occultation by (132715) 2002 OR18 on 2023-08-04 (23:21:43 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] : e1584bb0-ddb3-11f0-547e-b07fdab86bb0 [observed] Occultation Date + Time : 2023-08-04 at 23:21:43 UT +/- 0.01 min [1] Object Designation : (132715) 2002 OR18 Star Designation : GDR3 4094684587214206848 Star Coordinates (ICRF) : RA = 18 15 05.4731, DE = -19 15 08.345 [2] Star Magnitudes : G = 11.54 mag, RP = 10.82 mag, BP = 12.11 mag Object Magnitude : V = 19.87 mag Estimated Magnitude Drop : 8.3 mag Estimated Max. Duration : 0.5 sec Speed of the shadow : 7.7 km/s Object Mean Diameter : 4.0 km (src: astorb) => apparent = 2 mas Apparent Motion : 0.2600 arcs/min @ PA = 277 deg Horizontal Parallax : 3.5860 arcs Dynamical Class : MBA Elongation to Moon & Sun : 84° (sunlit = 85%), Sun = 141° Cross-track uncertainty : 1.0 mas = 1 km = 0.44 path-width (1-sig) RUWE and duplicate source : 2.2 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#50 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0


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