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Stellar Occultation by (227038) 2005 AU54 on 2025-10-24 (19:35:26 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] : a01cfa60-ddb8-11f0-547e-5086ff77e6d0 [observed]

 Occultation Date + Time   : 2025-10-24 at 19:35:26 UT +/- 0.01 min  [1]
 Object Designation        : (227038) 2005 AU54
 Star Designation          : GDR3 6792732430663967744
 Star Coordinates (ICRF)   : RA = 20 36 34.9352, DE = -33 01 30.912  [2]
 Star Magnitudes           : G = 12.21 mag, RP = 11.57 mag, BP = 12.7 mag
 Object Magnitude          : V = 20.93 mag
 Estimated Magnitude Drop  : 8.7 mag
 Estimated Max. Duration   : 0.2 sec
 Speed of the shadow       : 16.9 km/s
 Object Mean Diameter      : 3.5 km  (src: astorb) => apparent = 2 mas
 Apparent Motion           : 0.4467 arcs/min @ PA = 49 deg
 Horizontal Parallax       : 2.8110 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 55° (sunlit = 10%), Sun = 91°
 Cross-track uncertainty   : 1.7 mas = 3 km = 1.10 path-width (1-sig)
 RUWE and duplicate source : 1.09 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#31
 Note                      : FP:true

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


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