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Stellar Occultation by (850) Altona on 2023-12-29 (20:08:55 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] : ea492490-ddb0-11f0-547e-0bbcdbf5d6e8 [observed] Occultation Date + Time : 2023-12-29 at 20:08:55 UT +/- 0.0 min [1] Object Designation : (850) Altona Star Designation : GDR3 3356480142549292544 Star Coordinates (ICRF) : RA = 06 30 47.8535, DE = +14 20 22.049 [2] Star Magnitudes : G = 14.61 mag, RP = 13.71 mag, BP = 15.42 mag Object Magnitude : V = 14.48 mag Estimated Magnitude Drop : 0.7 mag Estimated Max. Duration : 5.1 sec Speed of the shadow : 15.9 km/s Object Mean Diameter : 80.9 km (src: astorb) => apparent = 47 mas Apparent Motion : 0.5550 arcs/min @ PA = 287 deg Horizontal Parallax : 3.7020 arcs Dynamical Class : MBA Elongation to Moon & Sun : 35° (sunlit = 92%), Sun = 171° Cross-track uncertainty : 0.4 mas = 0 km = 0.01 path-width (1-sig) RUWE and duplicate source : 0.99 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#78 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0


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