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Stellar Occultation by (129133) 2004 YZ31 on 2026-08-14 (01:53:04 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] : a6a38560-d9ad-11f1-43f3-3c01feefc426 [observed]

 Occultation Date + Time   : 2026-08-14 at 01:53:04 UT +/- 0.03 min  [1]
 Object Designation        : (129133) 2004 YZ31
 Star Designation          : GDR3 3280739910404244864
 Star Coordinates (ICRF)   : RA = 04 29 57.9680, DE = +03 49 58.699  [2]
 Star Magnitudes           : G = 14.65 mag, RP = 14.07 mag, BP = 15.06 mag
 Object Magnitude          : V = 20.24 mag
 Estimated Magnitude Drop  : 5.6 mag
 Estimated Max. Duration   : 0.6 sec
 Speed of the shadow       : 19.9 km/s
 Object Mean Diameter      : 12.5 km  (src: astorb) => apparent = 3 mas
 Apparent Motion           : 0.2967 arcs/min @ PA = 95 deg
 Horizontal Parallax       : 1.5850 arcs
 Dynamical Class           : JTRO
 Elongation to Moon & Sun  : 92° (sunlit = 2%), Sun = 76°
 Cross-track uncertainty   : 5.3 mas = 21 km = 1.71 path-width (1-sig)
 RUWE and duplicate source : 1.03 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL45
 Note                      : FP:true

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


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