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Stellar Occultation by (225820) 2001 WZ87 on 2025-08-31 (02:15:30 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] : 5b2f1010-ddb7-11f0-547e-dcafcfaa8d01 [observed]

 Occultation Date + Time   : 2025-08-31 at 02:15:30 UT +/- 0.07 min  [1]
 Object Designation        : (225820) 2001 WZ87
 Star Designation          : GDR3 2374484081322435584
 Star Coordinates (ICRF)   : RA = 00 37 48.9246, DE = -13 42 15.995  [2]
 Star Magnitudes           : G = 10.16 mag, RP = 9.66 mag, BP = 10.5 mag
 Object Magnitude          : V = 19.45 mag
 Estimated Magnitude Drop  : 9.3 mag
 Estimated Max. Duration   : 0.3 sec
 Speed of the shadow       : 6.5 km/s
 Object Mean Diameter      : 1.80 km  (src: astorb) => apparent = 2 mas
 Apparent Motion           : 0.4167 arcs/min @ PA = 247 deg
 Horizontal Parallax       : 6.7960 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 114° (sunlit = 48%), Sun = 150°
 Cross-track uncertainty   : 24.7 mas = 23 km = 12.88 path-width (1-sig)
 RUWE and duplicate source : 2.9 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#32
 Note                      : FP:true

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


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