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Stellar Occultation by (418) Alemannia on 2023-04-04 (21:16:37 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] : 8aa5c6d0-ddb3-11f0-547e-c946cefb6c71 [observed] Occultation Date + Time : 2023-04-04 at 21:16:37 UT +/- 0.0 min [1] Object Designation : (418) Alemannia Star Designation : GDR3 3370711499501052544 Star Coordinates (ICRF) : RA = 06 21 21.6329, DE = +18 10 04.937 [2] Star Magnitudes : G = 13.97 mag, RP = 13.4 mag, BP = 14.23 mag Object Magnitude : V = 14.98 mag Estimated Magnitude Drop : 1.4 mag Estimated Max. Duration : 1.6 sec Speed of the shadow : 21.9 km/s Object Mean Diameter : 34.1 km (src: astorb) => apparent = 18 mas Apparent Motion : 0.6983 arcs/min @ PA = 91 deg Horizontal Parallax : 3.3880 arcs Dynamical Class : MBA Elongation to Moon & Sun : 85° (sunlit = 98%), Sun = 80° Cross-track uncertainty : 0.9 mas = 1 km = 0.05 path-width (1-sig) RUWE and duplicate source : 6.78 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#112 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0


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