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Stellar Occultation by (125542) 2001 WU91 on 2023-12-05 (20:46:42 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] : 4385f670-ddb4-11f0-547e-7bbe5fff5257 [observed]

 Occultation Date + Time   : 2023-12-05 at 20:46:42 UT +/- 0.0 min  [1]
 Object Designation        : (125542) 2001 WU91
 Star Designation          : GDR3 0191415839004776960
 Star Coordinates (ICRF)   : RA = 05 49 50.9668, DE = +39 07 10.317  [2]
 Star Magnitudes           : G = 12.77 mag, RP = 12.14 mag, BP = 13.22 mag
 Object Magnitude          : V = 18.4 mag
 Estimated Magnitude Drop  : 5.6 mag
 Estimated Max. Duration   : 0.2 sec
 Speed of the shadow       : 15.8 km/s
 Object Mean Diameter      : 3.2 km  (src: astorb) => apparent = 3 mas
 Apparent Motion           : 0.9150 arcs/min @ PA = 314 deg
 Horizontal Parallax       : 6.1650 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 82° (sunlit = 44%), Sun = 159°
 Cross-track uncertainty   : 1.9 mas = 1 km = 0.61 path-width (1-sig)
 RUWE and duplicate source : 9.3 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#40
 Note                      : FP:true

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


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