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Stellar Occultation by (131098) 2001 AL13 on 2025-08-30 (20:49:22 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] : 5b441eb0-ddb7-11f0-547e-907af77f814f [observed]

 Occultation Date + Time   : 2025-08-30 at 20:49:22 UT +/- 0.06 min  [1]
 Object Designation        : (131098) 2001 AL13
 Star Designation          : GDR3 6862968997225485184
 Star Coordinates (ICRF)   : RA = 20 39 34.2620, DE = -16 21 03.697  [2]
 Star Magnitudes           : G = 10.97 mag, RP = 10.48 mag, BP = 11.29 mag
 Object Magnitude          : V = 20.57 mag
 Estimated Magnitude Drop  : 9.6 mag
 Estimated Max. Duration   : 0.2 sec
 Speed of the shadow       : 10.6 km/s
 Object Mean Diameter      : 2.2 km  (src: astorb) => apparent = 1 mas
 Apparent Motion           : 0.4167 arcs/min @ PA = 239 deg
 Horizontal Parallax       : 4.1900 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 65° (sunlit = 46%), Sun = 150°
 Cross-track uncertainty   : 17.7 mas = 26 km = 12.25 path-width (1-sig)
 RUWE and duplicate source : 1.11 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#37
 Note                      : FP:true

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


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