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Stellar Occultation by (128) Nemesis on 2026-06-02 (03:26:24 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] : 13d4ba60-33bd-11f1-6999-2e57aff7597b [asteroids]

 Occultation Date + Time   : 2026-06-02 at 03:26:24 UT +/- 0.03 min  [1]
 Object Designation        : (128) Nemesis
 Star Designation          : GDR3 6767900239728743296
 Star Coordinates (ICRF)   : RA = 19 36 11.1027, DE = -25 00 26.492  [2]
 Star Magnitudes           : G = 12.43 mag, RP = 11.86 mag, BP = 12.83 mag
 Object Magnitude          : V = 12.11 mag
 Estimated Magnitude Drop  : 0.6 mag
 Estimated Max. Duration   : 35.6 sec
 Speed of the shadow       : 5.3 km/s
 Object Mean Diameter      : 188.2 km  (src: astorb) => apparent = 135 mas
 Apparent Motion           : 0.2267 arcs/min @ PA = 230 deg
 Horizontal Parallax       : 4.5750 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 21° (sunlit = 97%), Sun = 140°
 Cross-track uncertainty   : 1.0 mas = 1 km = 0.01 path-width (1-sig)
 RUWE and duplicate source : 0.85 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#143
 Note                      : FP:true

 Object is a <Gaia mass determination> target !

 [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0


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