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Stellar Occultation by (90641) 4570 T-2 on 2026-10-31 (20:20:33 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] : 3f3ebc20-d9b5-11f1-43f3-4bbf9eeef592 [observed]

 Occultation Date + Time   : 2026-10-31 at 20:20:33 UT +/- 0.06 min  [1]
 Object Designation        : (90641) 4570 T-2
 Star Designation          : GDR3 0065779077703486080
 Star Coordinates (ICRF)   : RA = 03 57 03.4418, DE = +23 56 41.176  [2]
 Star Magnitudes           : G = 13.43 mag, RP = 12.71 mag, BP = 14.0 mag
 Object Magnitude          : V = 19.38 mag
 Estimated Magnitude Drop  : 6.0 mag
 Estimated Max. Duration   : 0.4 sec
 Speed of the shadow       : 9.5 km/s
 Object Mean Diameter      : 3.4 km  (src: astorb) => apparent = 2 mas
 Apparent Motion           : 0.4017 arcs/min @ PA = 270 deg
 Horizontal Parallax       : 4.4960 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 53° (sunlit = 62%), Sun = 156°
 Cross-track uncertainty   : 8.0 mas = 11 km = 3.34 path-width (1-sig)
 RUWE and duplicate source : 1.08 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL41
 Note                      : FP:true

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


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