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Stellar Occultation by (206781) 2004 CS109 on 2023-09-22 (20:01:25 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] : 0ff98d30-ddb4-11f0-547e-8c40e9fec861 [observed] Occultation Date + Time : 2023-09-22 at 20:01:25 UT +/- 0.05 min [1] Object Designation : (206781) 2004 CS109 Star Designation : GDR3 2789620467509130368 Star Coordinates (ICRF) : RA = 01 00 18.8753, DE = +20 48 10.718 [2] Star Magnitudes : G = 11.52 mag, RP = 10.96 mag, BP = 11.91 mag Object Magnitude : V = 19.58 mag Estimated Magnitude Drop : 8.1 mag Estimated Max. Duration : 0.3 sec Speed of the shadow : 8.7 km/s Object Mean Diameter : 2.7 km (src: astorb) => apparent = 2 mas Apparent Motion : 0.4033 arcs/min @ PA = 253 deg Horizontal Parallax : 4.9320 arcs Dynamical Class : MBA Elongation to Moon & Sun : 113° (sunlit = 50%), Sun = 154° Cross-track uncertainty : 16.7 mas = 21 km = 8.00 path-width (1-sig) RUWE and duplicate source : 1.14 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#28 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0


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