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Stellar Occultation by (209) Dido on 2025-11-25 (20:40:49 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] : cda1a850-ddb8-11f0-547e-d89093e647f9 [observed] Occultation Date + Time : 2025-11-25 at 20:40:49 UT +/- 0.01 min [1] Object Designation : (209) Dido Star Designation : GDR3 3454287444211696512 Star Coordinates (ICRF) : RA = 05 48 50.0664, DE = +33 11 28.726 [2] Star Magnitudes : G = 14.87 mag, RP = 14.04 mag, BP = 15.6 mag Object Magnitude : V = 13.35 mag Estimated Magnitude Drop : 0.2 mag Estimated Max. Duration : 13.3 sec Speed of the shadow : 12.0 km/s Object Mean Diameter : 159.9 km (src: astorb) => apparent = 92 mas Apparent Motion : 0.4150 arcs/min @ PA = 279 deg Horizontal Parallax : 3.6650 arcs Dynamical Class : MBA Elongation to Moon & Sun : 142° (sunlit = 26%), Sun = 154° Cross-track uncertainty : 0.7 mas = 1 km = 0.01 path-width (1-sig) RUWE and duplicate source : 0.93 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#138 Note : FP:true Object is a <Gaia mass determination> target ! [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0


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