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Stellar Occultation by (8128) Nicomachus on 2025-11-26 (22:50:17 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] : cde037f0-ddb8-11f0-547e-ade0b357a58a [observed] Occultation Date + Time : 2025-11-26 at 22:50:17 UT +/- 0.01 min [1] Object Designation : (8128) Nicomachus Star Designation : GDR3 3436559193602425728 Star Coordinates (ICRF) : RA = 06 08 06.4863, DE = +28 26 02.511 [2] Star Magnitudes : G = 14.89 mag, RP = 18.54 mag, BP = 20.31 mag Object Magnitude : V = 17.9 mag Estimated Magnitude Drop : 3.1 mag Estimated Max. Duration : 0.9 sec Speed of the shadow : 11.5 km/s Object Mean Diameter : 9.8 km (src: astorb) => apparent = 5 mas Apparent Motion : 0.3850 arcs/min @ PA = 273 deg Horizontal Parallax : 3.5500 arcs Dynamical Class : MBA Elongation to Moon & Sun : 133° (sunlit = 36%), Sun = 153° Cross-track uncertainty : 3.5 mas = 6 km = 0.64 path-width (1-sig) RUWE and duplicate source : 0.97 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#63 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0


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