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Stellar Occultation by (939) Isberga on 2023-04-30 (20:43:03 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] : 928612b0-ddb3-11f0-547e-5c0cf6fbbfef [observed] Occultation Date + Time : 2023-04-30 at 20:43:03 UT +/- 0.02 min [1] Object Designation : (939) Isberga Star Designation : GDR3 0630510411758988416 Star Coordinates (ICRF) : RA = 09 22 07.3808, DE = +14 40 49.984 [2] Star Magnitudes : G = 12.8 mag, RP = 12.37 mag, BP = 13.04 mag Object Magnitude : V = 17.04 mag Estimated Magnitude Drop : 4.3 mag Estimated Max. Duration : 1.7 sec Speed of the shadow : 10.5 km/s Object Mean Diameter : 17.8 km (src: astorb) => apparent = 11 mas Apparent Motion : 0.3783 arcs/min @ PA = 110 deg Horizontal Parallax : 3.8280 arcs Dynamical Class : MBA Elongation to Moon & Sun : 25° (sunlit = 77%), Sun = 98° Cross-track uncertainty : 7.5 mas = 12 km = 0.70 path-width (1-sig) RUWE and duplicate source : 1.03 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#72 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0


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