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Stellar Occultation by (52246) Donaldjohanson on 2023-08-08 (20:43:13 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] : ea4377e0-ddb3-11f0-547e-7915bcb6110e [observed] Occultation Date + Time : 2023-08-08 at 20:43:13 UT +/- 0.02 min [1] Object Designation : (52246) Donaldjohanson Star Designation : GDR3 2652752435449859328 Star Coordinates (ICRF) : RA = 22 41 11.5494, DE = -01 27 06.032 [2] Star Magnitudes : G = 8.89 mag, RP = 7.99 mag, BP = 9.75 mag Object Magnitude : V = 19.64 mag Estimated Magnitude Drop : 10.8 mag Estimated Max. Duration : 0.3 sec Speed of the shadow : 9.9 km/s Object Mean Diameter : 2.6 km (src: astorb) => apparent = 2 mas Apparent Motion : 0.4667 arcs/min @ PA = 257 deg Horizontal Parallax : 4.9910 arcs Dynamical Class : MBA Elongation to Moon & Sun : 70° (sunlit = 45%), Sun = 154° Cross-track uncertainty : 3.7 mas = 4 km = 1.82 path-width (1-sig) RUWE and duplicate source : 1.1 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#22 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0


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