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Stellar Occultation by (319) Leona on 2023-12-12 (01:17:09 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] : 1a195736-e054-4610-9b74-76047deaea36 [special] Occultation Date + Time : 2023-12-12 at 01:17:09 UT +/- 0.03 min [1] Object Designation : (319) Leona Star Designation : Betelgeuse Star Coordinates (ICRF) : RA = 05 55 10.3467, DE = +07 24 25.645 [2] Object Magnitude : V = 14.21 mag Estimated Magnitude Drop : 13.7 mag Estimated Max. Duration : 6.2 sec Speed of the shadow : 10.7 km/s Object Mean Diameter : 66.0 km (src: Ortiz+2023) => apparent = 50 mas Apparent Motion : 0.4883 arcs/min @ PA = 262 deg Horizontal Parallax : 4.8640 arcs Dynamical Class : MBA Elongation to Moon & Sun : 152° (sunlit = 1%), Sun = 162° Cross-track uncertainty : 4.4 mas = 5 km = 0.09 path-width (1-sig) Ephemeris Reference : JPLH#69 (23-09-19) Note : Pos+PM: HIP+Harp17 Campaign webpage [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0


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