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Stellar Occultation by (457908) 2009 UA13 on 2025-12-31 (19:21:18 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] : 55bb3fa0-d997-11f1-43f3-37b23ef84afa [observed]

 Occultation Date + Time   : 2025-12-31 at 19:21:18 UT +/- 0.27 min  [1]
 Object Designation        : (457908) 2009 UA13
 Star Designation          : GDR3 0089928025244106624
 Star Coordinates (ICRF)   : RA = 02 34 06.1389, DE = +23 47 13.692  [2]
 Star Magnitudes           : G = 12.35 mag, RP = 11.56 mag, BP = 13.03 mag
 Object Magnitude          : V = 20.5 mag
 Estimated Magnitude Drop  : 8.1 mag
 Estimated Max. Duration   : 0.3 sec
 Speed of the shadow       : 4.9 km/s
 Object Mean Diameter      : 1.70 km  (src: astorb) => apparent = 1 mas
 Apparent Motion           : 0.2467 arcs/min @ PA = 23 deg
 Horizontal Parallax       : 5.3060 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 20° (sunlit = 90%), Sun = 123°
 Cross-track uncertainty   : 27.0 mas = 32 km = 19.09 path-width (1-sig)
 RUWE and duplicate source : 1.18 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL24
 Note                      : FP:true

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


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