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Stellar Occultation by (3933) Portugal on 2025-12-06 (00:23:53 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] : cebdc6b0-ddb8-11f0-547e-4d1dff77c1ab [observed]

 Occultation Date + Time   : 2025-12-06 at 00:23:53 UT +/- 0.01 min  [1]
 Object Designation        : (3933) Portugal
 Star Designation          : GDR3 0676211818727120640
 Star Coordinates (ICRF)   : RA = 08 20 46.4524, DE = +21 31 10.825  [2]
 Star Magnitudes           : G = 14.93 mag, RP = 14.17 mag, BP = 15.56 mag
 Object Magnitude          : V = 18.34 mag
 Estimated Magnitude Drop  : 3.5 mag
 Estimated Max. Duration   : 1.9 sec
 Speed of the shadow       : 5.6 km/s
 Object Mean Diameter      : 10.4 km  (src: astorb) => apparent = 5 mas
 Apparent Motion           : 0.1617 arcs/min @ PA = 292 deg
 Horizontal Parallax       : 3.0920 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 34° (sunlit = 98%), Sun = 132°
 Cross-track uncertainty   : 0.4 mas = 0 km = 0.08 path-width (1-sig)
 RUWE and duplicate source : 0.94 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#67
 Note                      : FP:true

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


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