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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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