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Stellar Occultation by (138637) 2000 RN20 on 2023-09-27 (02:24:39 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] : 13e21200-ddb4-11f0-547e-450dfe5f9c5e [observed] Occultation Date + Time : 2023-09-27 at 02:24:39 UT +/- 0.03 min [1] Object Designation : (138637) 2000 RN20 Star Designation : GDR3 0136718880731452032 Star Coordinates (ICRF) : RA = 02 55 37.0102, DE = +33 35 26.530 [2] Star Magnitudes : G = 11.28 mag, RP = 10.82 mag, BP = 11.58 mag Object Magnitude : V = 19.09 mag Estimated Magnitude Drop : 7.8 mag Estimated Max. Duration : 0.8 sec Speed of the shadow : 6.1 km/s Object Mean Diameter : 4.8 km (src: astorb) => apparent = 3 mas Apparent Motion : 0.2367 arcs/min @ PA = 314 deg Horizontal Parallax : 4.1050 arcs Dynamical Class : MBA Elongation to Moon & Sun : 82° (sunlit = 92%), Sun = 130° Cross-track uncertainty : 1.3 mas = 2 km = 0.42 path-width (1-sig) RUWE and duplicate source : 0.88 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#42 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0


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