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Stellar Occultation by (917) Lyka on 2025-08-26 (21:24:42 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] : 53c309d0-ddb7-11f0-547e-021beffa5d74 [observed] Occultation Date + Time : 2025-08-26 at 21:24:42 UT +/- 0.02 min [1] Object Designation : (917) Lyka Star Designation : GDR3 6763373928325281664 Star Coordinates (ICRF) : RA = 18 59 30.8697, DE = -27 58 11.327 [2] Star Magnitudes : G = 13.7 mag, RP = 13.18 mag, BP = 14.04 mag Object Magnitude : V = 14.62 mag Estimated Magnitude Drop : 1.3 mag Estimated Max. Duration : 8.7 sec Speed of the shadow : 3.2 km/s Object Mean Diameter : 28.1 km (src: astorb) => apparent = 33 mas Apparent Motion : 0.2283 arcs/min @ PA = 23 deg Horizontal Parallax : 7.5350 arcs Dynamical Class : MBA Elongation to Moon & Sun : 87° (sunlit = 13%), Sun = 129° Cross-track uncertainty : 0.4 mas = 0 km = 0.01 path-width (1-sig) RUWE and duplicate source : 1.01 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#73 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0


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