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Stellar Occultation by (45202) 1999 XA171 on 2026-09-03 (00:40:28 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] : cce2b5f0-d9af-11f1-43f3-870d77ef29bb [observed]

 Occultation Date + Time   : 2026-09-03 at 00:40:28 UT +/- 0.01 min  [1]
 Object Designation        : (45202) 1999 XA171
 Star Designation          : GDR3 0050219819939285376
 Star Coordinates (ICRF)   : RA = 04 03 12.2068, DE = +19 09 15.845  [2]
 Star Magnitudes           : G = 10.62 mag, RP = 10.08 mag, BP = 11.0 mag
 Object Magnitude          : V = 19.61 mag
 Estimated Magnitude Drop  : 9.0 mag
 Estimated Max. Duration   : 0.3 sec
 Speed of the shadow       : 13.4 km/s
 Object Mean Diameter      : 4.0 km  (src: astorb) => apparent = 2 mas
 Apparent Motion           : 0.4883 arcs/min @ PA = 72 deg
 Horizontal Parallax       : 3.8820 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 11° (sunlit = 65%), Sun = 98°
 Cross-track uncertainty   : 1.3 mas = 2 km = 0.53 path-width (1-sig)
 RUWE and duplicate source : 1.11 mas, dup.src = 1  (0:false, 1:true)

 Ephemeris Reference       : JPL44
 Note                      : FP:true

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


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